warrabri - murray downs 2001 b · investigation bores were drilled on murray downs during this...

Digital No.: WRA02013

Report No.: 13/2002A

WARRABRI - MURRAY DOWNS GROUNDWATER INVESTIGATION 2001

R. J. Paul Natural Resources Division Alice Springs April 2003

i

Keywords

Subject Groundwater Resource Assessment

Geology Tertiary Sediments

Arrinthrunga Formation

Chabalowe Formation

Georgina Basin

Kurinelli Sandstone

Hatches Creek Group

Location Warrabri

Murray Downs Station

ii

TABLE OF CONTENTS 1 INTRODUCTION.............................................................................................................. 1 2 PROJECT AIMS................................................................................................................ 3

2.1 OUTPUT ........................................................................................................................ 4 3 CLIMATE .......................................................................................................................... 6

3.1 RAINFALL .................................................................................................................... 6 3.2 EVAPORATION ........................................................................................................... 6

4 GEOLOGY....................................................................................................................... 10 5 SOILS............................................................................................................................... 13 6 DRILLING INVESTIGATIONS..................................................................................... 15

6.1 PREVIOUS INVESTIGATIONS ................................................................................ 15 6.2 2001 INVESTIGATION.............................................................................................. 15 6.3 GEOLOGICAL INTERPRETATION ......................................................................... 15

7 TEST PUMPING ............................................................................................................. 18 7.1 CONSTANT RATE TEST........................................................................................... 18

8 CHEMISTRY................................................................................................................... 20 8.1 FIELD EC .................................................................................................................... 20 8.2 CHEMICAL ANALYSIS ............................................................................................ 20

8.2.1 TDS ...................................................................................................................... 20 8.2.2 DUROV DIAGRAMS ......................................................................................... 20 8.2.3 HCO3/Cl RATIO.................................................................................................. 21

9 GROUNDWATER LEVELS........................................................................................... 27 10 CONCLUSIONS.............................................................................................................. 30 11 RECOMMENDATIONS ................................................................................................. 31 12 REFERENCES................................................................................................................. 32

iii

LIST OF TABLES Table 1 Investigation Sites for Warrabri ALT. ....................................................................... 3 Table 2 Investigation Sites for Murray Downs ....................................................................... 3 Table 3 Rainfall Summary for Barrow Creek Post Office ...................................................... 7 Table 4 Rainfall Summary for Murray Downs Station ........................................................... 8 Table 5 Stratigraphic Summary............................................................................................. 10 Table 6 Core Hole Location .................................................................................................. 10 Table 7 NTGS Core Hole Geology ....................................................................................... 11 Table 8 Correlation between Verhoeven and Read & Haines et al....................................... 11 Table 9 1990 Drilling Summary............................................................................................ 17 Table 10 2001 Drilling Summary............................................................................................ 17 Table 11 Test Pumping Program Summary. ........................................................................... 18 Table 12 RN17593 Test Pump Results ................................................................................... 18 Table 13 Chemical Analyses (Major Ions) from 2001 Investigation Drilling Programs. ....... 22 Table 14 Chemical Analyses from 2001 Investigation Drilling Program............................... 23 Table 15 Monitoring Bores at Ali Curung .............................................................................. 27

LIST OF FIGURES Figure 1 Location Plan.............................................................................................................. 2 Figure 2 Investigation Sites ...................................................................................................... 5 Figure 3 Rainfall at Murray Downs.......................................................................................... 9 Figure 4 Geology of the Warrabri – Murray Downs Area. .................................................... 12 Figure 5 Land Capability for Horticulture Plan...................................................................... 14 Figure 6 Total Dissolved Solids Contour Map ....................................................................... 24 Figure 7 Durov Diagram for Warrabri – Murray Downs Investigation 2001 ........................ 25 Figure 8 Bicarbonate / Chloride ratio Contour Map............................................................... 26 Figure 9 Ali-Curung Water Levels ......................................................................................... 28 Figure 10 Groundwater Contours 03/08/2001...................................................................... 29

LIST OF APPENDICES A. PRE 2001 BORES IN WARRABRI – MURRAY DOWNS AREA B. COMPOSITE LOGS AND GEOLOGICAL LOGS C. FIELD AND LABORATORY ELECTRICAL CONDUCTIVITIES D. NORTHERN TERRITORY ENVIRONMENTAL LABORATORIES HEAVY

METAL ANALYSIS – RN17593 E. INVESTIGATION BORE SURVEY RESULTS

iv

LIST OF ABBREVIATIONS CRT constant rate test

EC electrical conductivity

ID inside diameter

km kilometres

L/s litres per sec

m metres

mbgl metres below ground level

mg/L milligrams per litre

mm millimetre

RN registered number

s drawdown

SWL standing water level

SS sandstone

T transmissivity

TDS total dissolved solids

µS/cm microSiemens per centimetre

DISTRIBUTION LIST

MURRAY DOWNS STATION 1

DPIF, ALICE SPRINGS 2

NATURAL RESOURCES DIVISION LIBRARY, ALICE SPRINGS 3

NT PARKS AND WILDLIFE LIBRARY, PALMERSTON 1

NT PARKS AND WILDLIFE LIBRARY, AZRI, ALICE SPRINGS 1

DIRECTOR STRATEGIC PLANNING, NATURAL RESOURCES DIVISION,

PALMERSTON 1

PRINCIPAL ENGINEER WATER RESOURCES ASSESSMENT, NRD, PALMERSTON 1

AUTHOR 1

1

1 INTRODUCTION An investigation drilling program for horticulture was carried out in the Singleton – Murray Downs area in 1990. Two investigation bores were drilled on Murray Downs in 1990 with one bore, RN15588, having good quality water and the second bore, RN15589, having poorer quality water. The 2001 groundwater investigation is a continuation of the 1990 investigation of Muray Downs but also including aboriginal land at Warrabri Aboriginal Land Trust. The Warrabri – Murray Downs area is approximately 300 km north of Alice Springs (Figure 1). The area under investigation covers the area from 427000 to 460000 east and 7650000 to 7700000 north. Part of the investigation area had previously been assessed for land capability for horticulture and the investigation drilling was confined to areas with soils suitable for horticulture. All available data was assessed before the drilling program commenced. The data included cored holes, west of the investigation area, drilled for NTGS along the Davenport Ranges road, chemical analyses from water bores in the area and geological logs, mainly from groundwater investigations looking for potable water.

MURRAY DOWNS

STUDY AREA

WARRIBRIALT

GAS PIPELINE

RAILWAY LINE

Alice

Spr

ings

MAP LOCALITY

NorthernTerritory

Tasmania

New SouthWales

Victoria

Queensland

SouthAustralia

WesternAustralia

20 0 20 40 60 80 100

Kilometres

Scale: 1:1,000,000 @ A4

WARRABRI - MURRAY DOWNSGROUNDWATER INVESTIGATION

2001FIGURE 1

LOCALITY PLAN

Produced by the Conservation and Natural Resources Division of the Northern TerritoryDepartment of Infrastructure, Planning and Environment, Alice Springs N.T.

Department of Infrastructure, Planning and EnvironmentNorthern Territory Government

3

2 PROJECT AIMS A groundwater investigation program was carried out in 1990 to investigate the water resources of Singleton and Murray Downs for possible horticultural water supplies. Only two investigation bores were drilled on Murray Downs during this program (F. Carosone, 1990). The 2001 investigation program is a continuation of the 1990 program. There is now more information on both water and soil resources of the area. Land Resource Assessment personnel have mapped the land capability based on landform and soils of the portion of Murray Downs with better water quality (Sugars and Whitehouse, 2000). Several bores have been drilled since 1990 and the water quality of all bores has been included in a Surfer contour plan of TDS (see section 8.2.1). In broad terms, the area of low salinity water corresponds to a topographic low with soils mostly unsuitable for horticulture. Investigation drilling was directed at areas mapped by Land Resources as having soils suitable for horticulture. The investigation drilling was looking for good supplies (>10 L/s) of water with TDS below 1000 mg/L. Three investigation sites were selected on Warrabri ALT and locations are given in Table 1 and Figure 2.

Table 1 Investigation Sites for Warrabri ALT.

Site Easting (GDA94) Northing (GDA94) Comments Site 1* 428450 7679350 Along Ali Curung main road. Site 2* 433550 7678200 Along Ali Curung main road. Site 3 441900 7675950 Along Ali Curung - Murray Downs road

near the Murray Downs boundary. *Sites 1 & 2 not drilled due to time constraints. The water quality on Murray Downs appears to be controlled, in part, by recharge features. Areas away from recharge features tend to have a TDS of around 1500 mg/L. There are two main areas with good soils and water quality suitable for horticulture. One area is near Blue Bush bore (RN1259) and the other area is near Conglomerate Bore (RN10841). Eight investigation sites were selected on Murray Downs and locations are given in Table 2 and Figure 2.

Table 2 Investigation Sites for Murray Downs

Site Easting (GDA94) Northing (GDA94) Comments Site 4 448200 7666300 East of Bluebush Bore. Site 5 451400 7667100 East of Site 4. Site 6 448250 7669650 North of Bluebush Bore. Site 7 445000 7670000 West of Site 6. Site 8 444700 7674800 On Ali Curung –Murray Downs road. Site 9 445800 7686500 North-west of No. 8 Bore. Site 10 446470 7692020 West of Conglomerate Bore. Site 11 439600 7694100 North-west of Site 10.

4

Investigation sites were initially drilled to measure the water quality (approximately 50 metres drilling to get a water sample). If quality was poor then the hole was stopped and casing run. Holes with good quality water were continued to a maximum of 100 metres to measure the yield from the hole.

2.1 OUTPUT The result of the investigation are the following: • Map showing bores drilled. • Information on bores drilled. • Map showing suitable soils (Land Resources). • Map showing groundwater quality. • Recommendations of areas for further investigation.

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BC-1

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RN006890

RN001254

RN011013RN011012

RN001253

RN010840

RN015589

RN011007RN011008

RN007017

RN011011

RN001259

RN010842

BC-2

12

3

45

67

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9

11

RN010841

RN002881

RN006895RN001801

RN001262

RN014356

RN015588

RN001261RN014355

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Legend

2001 Investigation SiteNTGS CoreholeBoresRoads and Tracks

Tenure Boundaries

WARRABRI - MURRAY DOWNSGROUNDWATER INVETIGATION

2001FIGURE 2

INVESTIGATION SITESDepartment of Infrastructure, Planning and EnvironmentNorthern Territory Government

5 0 5 10 15 20 25

Kilometres

Scale: 1:250,000 @ A4

Produced by the Conservation and Natural Resources Division of the Northern TerritoryDepartment of Infrastructure, Planning and Environment, Alice Springs N.T.

Warrabri ALT

Singleton

MurrayDowns

6

3 CLIMATE The area lies under the overall influence of the northern monsoon zone with occasional heavy summer rainfall. Meteorological records are available from Barrow Creek, Murray Downs station and Ali-Curung.

3.1 RAINFALL Most rain falls during the summer season in the form of heavy thunderstorms with, generally, little follow-on rain. The mean annual rainfall for Barrow Creek (110 years of records) is 309 mm with, on average, 74% of it occurring during the November – March period. There is great variability from year to year with the maximum annual total being 986 mm in 1904 and the minimum annual total of 70 mm in 1963. The mean annual rainfall for Murray Downs Station (27 years of records) is 320 mm. The rainfall recording started in 1966 but has no data for part of 1979 and 1980 to 1984 but covers the period from 1973 to 1977 when the water levels in the monitoring bores at Ali-Curung rose approximately 8 metres (see section 9.1). The monthly rainfall for Murray Downs Station is shown in Table 4 and in Figure 3.

3.2 EVAPORATION The average annual potential evaporation for the area is approximately 3400 mm, which is more than ten times the annual precipitation.

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Table 3 Rainfall Summary for Barrow Creek Post Office NT Water Resources HYSTATR V55 Output 26/04/2002 Period of Record 01/01/1884 to 01/01/1994 Barrow Ck. Post Office Station DR015525 Mean of Annual Rainfall 309 ( Millimetres per Year ) Standard Dev. of Annual Rainfall 162 ( Millimetres per Year ) Co. of Variation of Annual Rainfall 0.526 ( Millimetres per Year ) Maximum Daily Rainfall 165 ( Millimetres per Day ) Mean Wet Day Frequency 52.5 ( Days per Year ) Longest Dry Run 251 ( Days ) Serial Correlation Coeff. (lag 1) 0.183 ( Millimetres per Month ) Daily Rainfall ( Millimetres per Day ) ( Days ending 2400 hours ) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Mean 1.76 2.31 1.31 0.459 0.493 0.392 0.277 0.187 0.263 0.567 0.928 1.28 Standard Deviation 6.55 8.09 7.03 2.68 2.90 2.13 2.04 1.61 1.75 2.27 3.41 4.43 Coeff. of Variation 3.71 3.49 5.36 5.84 5.89 5.45 7.38 8.65 6.66 4.00 3.67 3.46 Monthly Rainfall ( Millimetres per Month ) Mean 54.7 65.3 40.6 13.7 15.2 11.7 8.59 5.79 7.88 17.5 27.8 39.7 Standard Deviation 66.7 79.9 63.0 24.3 28.8 20.7 20.8 14.6 15.7 21.1 28.8 41.4 Coeff. of Variation 1.21 1.22 1.55 1.77 1.88 1.75 2.42 2.52 1.99 1.20 1.03 1.04 Maximum Rainfall ( Millimetres per Day ) Maximum 117 158 165 45.2 61.1 33.0 54.5 49.0 38.6 37.6 64.2 63.0 Mean of Maximum 18.2 20.6 15.8 5.83 6.39 4.79 3.49 2.67 3.52 6.53 10.3 13.8 Mean Wet Days ( Days per Month ) 7.54 7.50 4.68 2.49 2.58 2.55 2.06 1.71 2.09 4.80 6.68 7.79

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Table 4 Rainfall Summary for Murray Downs Station NT Water Resources HYSTATR V55 Output 26/04/2002 Period of Record 31/12/1965 to 31/07/1999 MURRAY DOWNS STATION Station DR015608 Mean of Annual Rainfall 329 ( Millimetres per Year ) Standard Dev. of Annual Rainfall 193 ( Millimetres per Year ) Co. of Variation of Annual Rainfall 0.587 ( Millimetres per Year ) Maximum Daily Rainfall 166 ( Millimetres per Day ) Mean Wet Day Frequency 38.5 ( Days per Year ) Longest Dry Run 429 ( Days ) Serial Correlation Coeff. (lag 1) 0.191 ( Millimetres per Month ) Daily Rainfall ( Millimetres per Day ) ( Days ending 2400 hours ) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Mean 2.22 3.69 0.749 0.351 0.549 0.243 0.281 0.121 0.238 0.529 0.887 1.18 Standard Deviation 7.65 11.8 3.09 2.30 2.89 2.39 1.94 0.847 1.34 2.41 3.18 4.32 Coeff. of Variation 3.43 3.20 4.13 6.55 5.27 9.82 6.91 6.97 5.62 4.56 3.59 3.65 Monthly Rainfall ( Millimetres per Month ) Mean 69.0 104 23.0 9.66 17.0 7.29 8.64 3.76 7.14 16.3 26.6 36.7 Standard Deviation 92.5 135 26.0 16.9 30.3 20.5 17.8 9.46 10.8 20.3 29.0 32.5 Coeff. of Variation 1.34 1.29 1.13 1.75 1.78 2.81 2.05 2.51 1.51 1.23 1.09 0.887 Maximum Rainfall ( Millimetres per Day ) Maximum 95.5 166 28.3 28.7 34.7 51.7 34.3 11.7 17.4 39.6 36.9 48.1 Mean of Maximum 21.1 30.0 9.19 4.99 6.24 4.13 4.03 1.54 3.49 6.52 8.96 14.5 Mean Wet Days ( Days per Month ) 6.73 7.10 3.03 1.40 2.14 0.852 1.42 1.10 1.82 3.17 4.57 5.17

9

Figure 3 Rainfall at Murray Downs

Murray Downs Rainfall Station DR015608

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1966 1968 1970 1972 1974 1976 1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998

Year

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ainf

all (

mm

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Murray Downs

No Data1980 to 1984

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4 GEOLOGY

The area under investigation is on the southern part of Bonney Well and the northern part of Barrow Creek 1:250,000 geology map sheets.

The investigation area contains the Davenport province of the Tennant Creek Inlier, the Palaeozoic Georgina basin and Tertiary and Quaternary deposits. The Proterozoic Hatches Creek Group outcrop to the east and south of the Murray Downs homestead and north of Ali-Curung. The Georgina basin deposits outcrop in the southern part of the study area. The Cainozoic deposits cover most of the area and mask the underlying units. A simplified stratigraphic column for the study area is given in Table 5. A geological map is presented in Figure 4.

Table 5 Stratigraphic Summary

Era Period Geological Formation

Description

Quaternary Sands, gravels, silt, clay, calcrete alluvial and colluvial deposits

Cainozoic

Tertiary Ferricrete, silcrete Middle to Late Cambrian?

Arrinthrunga Formation

Dolostone, dolomitic sandstone.

Palaeozoic

Middle Cambrian? Chabalowe Formation

Dolomitic quartz-arenite, siltstone, dolostone.

Proterozoic Early to Middle Proterozoic

Hatches Creek Group

Several cored holes were drilled by NTGS in 1984 in the western section of the study area. These holes are shown on Figure 4. The cored hole closest to the study area, BC-2, went through Tertiary deposits into granite. The core hole locations are in Table 6 and the geology summary is in Table 7.

Table 6 Core Hole Location

Core Hole Easting Northing Comments BC-1 428899 7660175 Found & GPSed BC-2 444300 7664900 Approximate LocationBC-3 420498 7657223 Found & GPSed BC-4 414385 7655040 Found & GPSed BC-5 415500 7676400 Approximate LocationGrg 18 414000 7659000 Approximate Location

11

Table 7 NTGS Core Hole Geology Core Hole Name

Interval (m) Geological Symbol

Geological Summary

BC-1 0 – 6 Qs Aeolian Sand 6 – 75 T Tertiary Sediments 75 – 315 – C– ua Arinthrunga Formation 315 – 322.94 PL h Hatches Creek Group

BC-2 0 – 3 Qr Red Earth 3 – 59 T Tertiary Sediments 59 – 79.7 PL g Granotoid

BC-3 0 – 4 Qs Aeolian Sand 4 – 56 T Tertiary Sediments 56 – 175 C– ua Arinthrunga Formation 175 – 385.11 C– mc Chabalowe Formation

BC-4 0 – 5 Qs Aeolian Sand 5 – 50.4 PL lg Orthogneiss

BC-5 0 – 3 Qs Aeolian Sand 3 – 63 T Tertiary Sediments 63 – 169 C– ua Arinthrunga Formation 169 – 328 C– mc Chabalowe Formation 328 – 339.25 PL g Granotoids

Grg 18 0 – 5 Qs Aeolian Sand 5 – 92 T Tertiary Sediments 92 – 96.01 C– ua Arinthrunga Formation

Verhoeven and Read (1978) have summarised the stratigraphy of aquifers in the Warrabri, Singleton, Murray Downs and part of Neutral Junction. They assigned the Cambrian – Ordovician sediments to the Tomahawk beds, based on the geological interpretation of the area at the time. The geology has been re-defined by Haines et al, 1991, with part of the Tomahawk beds being re-assigned to the Arrinthrunga Formation and the Chabalowe Formation. The correlation between Verhoeven and Read and the current Barrow Creek 1:250,000 geological map (Haines et al, 1991) is shown in Table 8.

Table 8 Correlation between Verhoeven and Read & Haines et al

Verhoeven and Read Stratigraphy Haines et al Stratigraphy Tomahawk Beds C– -ot a siltstone/sandstone Tomahawk beds Tomahawk Beds C– -ot b limestone Arrinthrunga Formation Tomahawk Beds C– -ot c sandstone Chabalowe Formation

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BC-1

BC-3ABC-3

BC-5

BC-2

BC-4

Grg 18

-

LEGEND

Cored holes

Hatches Creek Group Sediments

Georgina Basin Sediments

Cainozoic Sediments

Tertiary Sediments

Quaternary Sediments minus Qs

Qs (Quaternary Sand)

Geological Boundary ConcealedGeological Boundary ApproximateGeological Boundary Accurate

Tenure Boundaries

WARRABRI - MURRAY DOWNSGROUNDWATER INVESTIGATION2001FIGURE 4SIMPLIFIED GEOLOGY

Produced by the Conservation and Natural Resources Division of the Northern TerritorryDepartment of Infrastructure, Planning and Environment, Alice Springs N.T.Department of Infrastructure, Planning and Environment

Northern Territory Government

5 0 5 10 15Kilometers Scale: 1:250,000 @ A3

13

5 SOILS A broad reconnaissance land capability survey identifying areas for potential horticultural development was carried out in the Murray Downs area in 2000 (Sugars & Whitehouse, 2000). The area assessed was identified by Gilbert and Jolly (1990) as having groundwater with TDS less than 1000 mg/L. Previous mapping on Murray Downs by Grant (1989) was used by Sugars and Whitehouse and verified by spot-checking along tracks. Spot-checking involved inspecting site drainage, presence of coarse fragments or outcrop, landform types and attributes, erosion potential, soil uniformity and susceptibility to flooding. No detailed soil or vegetation recording was conducted. The land capability for particular land uses varies depending on the requirements of the crop and limitations of the land. The land deemed capable for horticulture in the Murray Downs area are those which have uniform areas of deep, well drained soils with little impedance due to abundant coarse fragments and calcrete pans. The landforms most desirable are those which have a level to slightly inclined, uniform gradient which will have similar management requirements over the entire area. The main criteria used to assess levels of capability were wetness, flooding, slope, water erosion potential, rockiness, soil depth and soil complexity. Due to the broadness of the land capability assessment the Murray Downs study area was divided into three levels of capability (Figure 5). The three levels are: Class 1 – Capable with minor to moderate limitations. Class 2 – Capable with severe limitations. Class 3 – Unsuitable. The groundwater investigation used the land capability map as a guide to areas that would be suitable for horticulture and all investigation sites were located on Class 1 levels of capability.

Class 2. Capable with severe limitations

Class 3. Unsuitable

TenureUnsealed road

Stock water supplies

Class 1. Capable with minor to moderate limitations

Land Capability Based on Landform and Soils

LEGEND

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Investigation bore 2001Investigation bore 1990

Sealed road

RN Registered Number

WARRABRI - MURRAY DOWNS GROUNDWATER INVESTIGATION 2001

FIGURE 5LAND CAPABILITY FOR HORTICULTURE(Based on a Reconnaissance Survey of Singleton -Murray Downs Area)

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Note:Although every effort has been made to ensure the accuracy and reliability of the information contained within this publication, the Northern Territory Department of Infrastructure, Planning and Environment expressly disclaim any liability for the information contained here in.

Produced by the Natural Resources Division of the Northern Territory Department of Infrastructure, Planning and Environment, Alice Springs N. T.

Northern Territory of Australia All rights reserved

Scale 1: 250 000 @ A3

Horizontal Datum: GDA 94

Kilometres

Map Grid: MGA 94 - Zone 53Vertical Datum: AHDProjection UTM - Central Meridian 135 deg. E Gird Interval 10 000 m

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SINGLETON STATION

WARRABRI ABORIGINAL LAND TRUST

MURRAY DOWNS STATION

430000mE 440000mE 450000mE 460000mE 470000mE 480000mE

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RN17586

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RN15589

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RN17588

RN17585

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Johnsons Waterhole

Ali-Curung

#RN15588

Old Station Bore No Name BoreTuxy's BoreRN2047 RN5952

RN14519

RN14356

RN14356

RN1261

RN14354

RN1260

RN14355

RN10844

RN10843

RN11877

RN1253RN6895

RN1262

RN7017

RN10841

RN6891

RN6897

RN1258

RN1259

RN6898

Nelson Bore

No 17 Bore

Jerries Bore

No 15 Bore

Chablow Bore

No 16 Bore

No 12 Bore

No 9 Bore

Amelia Bore

Middle WellNo 6 Bore

Bottom Bore

No 8 Bore

Conglomerate Bore

No 3 Bore

No 2 Bore (abd)

Turkey Flat Dam

Billys Bore

Bluebush Bore

Amelia Waterhole

Kaidwalla Waterhole

MURRAY DOWNS

WH

WH WH

WHWH

Sophies Bore

No 1 Bore

Skinner Waterhole

Warning: The infomation in this diagram is based on a reconnaisance survey. .The original source should be consulted.

Biliographic Reference: M. Sugars and D. Whitehouse, (2001), Land Resources of the Singeton station application area and a reconnaissance land capability surfey identifying potential areas for Horticultural development in the Singelton-Murray Downs study area. DLPE, RN. 27/2001

Tennant Creek

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KATHERINE

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SINGLETON STATION

WARRABRI ABORIGINAL LAND TRUST

MURRAY DOWNS STATION

Ali-Curung

RELIABILITY DIAGRAM

Sealed Road

Unsealed road

Vehicle traverse recordings#S

Satellite imagery inspection

Vehicle traverse with satellite imagery inspection

Low intensity mapping with satellite imagery inspection

Low intensity mapping with vehicle traverse and satellite imagery inspection

15

6 DRILLING INVESTIGATIONS

6.1 PREVIOUS INVESTIGATIONS There have been several groundwater investigations in the area, mainly on Warrabri Aboriginal Land Trust, looking for potable water supplies for Ali-Curung. A groundwater investigation in 1990 on Singleton – Murray Downs was looking for groundwater supplies for horticulture but only two investigation bores were drilled on Murray Downs. NTGS drilled several cored holes west of the study area to investigate the Georgina Basin sediments and the depth of the sediments. The summary of previous bores drilled is given in Appendix A and a summary of the two investigation bores drilled in 1990 is in Table 9.

6.2 2001 INVESTIGATION The drilling investigation began in July 2001 and was completed in early August 2001. Eleven bores were drilled for a total drilling depth of 924 metres. All holes, except for RN17593, were cased with either 100 mm Class 12 PVC or 50 mm Class 12 PVC. RN17593, which was used as a pump testing bore, was cased with 152 mm ID steel to case off the upper aquifer and the bore was completed open hole. A summary of the investigation bores is in Table 10. All the bores had chip samples collected every 3 metres and water samples collected at changes in water quality and quantity. Water samples were tested in the field for EC and pH. Selected water samples were sent to the laboratory for a full chemical analysis. The bores were geophysically logged with gamma, induction and conductivity/temperature if they were cased and also caliper and electric log if they were uncased. The geological logs and bore completion diagrams are in Appendix B.

6.3 GEOLOGICAL INTERPRETATION From the 2001 drilling and previous drilling the generalised geology at Blue Bush bore is: 0 – 45 metres Cainozioc 45 – 100 metres Chabalowe Formation The strata is dipping slightly to the north and at RN17593 the geology is: 0 – 36 metres Cainozioc 36 – 100 metres Arrinthrunga Formation Around RN10841 (Conglomerate bore) the Cambrian sediments appear to thin out and Proterozoic Hatches Creek Group underlie the Cainozioc sediments.

16

The bores showed an aquifer in the Tertiary sediments, yielding up to 2 L/s, and another high yielding aquifer in the underlying Cambrian sediments.

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Table 9 1990 Drilling Summary

RN Easting (GDA94)

Northing (GDA94)

Date(s) Drilled TD (metres)

Air-lift Yield (L/s)

TDS (mg/L)

Casing Dia. (mm)

Slotted Casing (mbgl)

Comments

15588 455690.65 7659150.49 31/01/1990 01/02/1990

90.7 15-20 550 50 mm PVC 84.7 – 90.7

15589 456075 7668318 01-06/02/1990 89.0 10 1480

Table 10 2001 Drilling Summary

RN Easting (GDA94)

Northing (GDA94)

Date(s) Drilled TD (metres)

Air-lift Yield (L/s)

TDS (mg/L)

Casing Dia. (mm)

Slotted Casing (mbgl)

Comments

17585 448217.51 7666281.29 12-13/07/2001 85.22 25-30 812 100 50.9 – 80.9 17586 451378.40 7667108.13 13-16/07/2001 99.70 40-45 984 50 32.6 – 75.0 17587 448240.34 7669673.88 16-18/07/2001 109.10 35-40 862 50 66.2 – 96.2 17588 445002.29 7670000.27 18-19/07/2001 91.77 15 838 50 49.8 - 91.8 17589 444709.55 7674813.04 20-23/07/2001 91.53 10-15 875 50 33.7 – 46.7 50 70.1 – 90.8 17590 445836.47 7686494.37 24-25/07/2001 73.23 7 949 41.7 – 71.7 17591 446473.08 7692026.14 25-26/07/2001 79.56 0.9 748 50 30.1 – 42.1 17592 439629.20 7694145.37 27-28/07/2001 73.37 20 676 100 41.6 – 71.6 17593 444735.73 7674842.28 30-31/07/2001 90.84 8.3 941 150 Open Hole

65.2 – 90.8

17594 444748.17 7674856.01 01/08/2001 37.30 0.3 491 100 24.6 – 36.6 17595 441911.05 7675943.45 01-02/08/2000 92.37 8 891 100 43.8 – 91.7

18

7 TEST PUMPING One bore, RN17593, was constructed as a pumping bore for a test pumping program. RN17589 and RN17594 were constructed as observation bores. RN17589 was constructed with two piezometer tubes, slotted at different intervals, with a plug between the slotted intervals. RN17594 was constructed with the slotted interval set in the Tertiary sediments. During drilling the groundwater samples showed a marked increase in salinity from 66 metres, jumping from 470 mg/L to 700 mg/L TDS, interpreted as two separate aquifers. RN17593 was constructed with the upper aquifer cased off and was pumped from the lower aquifer. RN17589 had bores screened in to two aquifers to see if the upper aquifer responded to pumping from the lower aquifer. The test pumping program was carried out from 01/09/2001 to 05/09/2001 and the program summary is in Table 11.

Table 11 Test Pumping Program Summary.

Step Test Date Discharge (L/s) RN17593 Drawdown (m) 1st step 01/09/2001 3.0 100 min = 7.92 m. 2nd step 01/09/2001 4.0 100 min = 11.47 m. 3rd step 01/09/2001 6.0 100 min = 18.66 m. 4th step 01/09/2001 8.5 100 min = 28.65 m. Constant Rate Test 24 hour CRT 03/09/2001 to

04/09/2001 10.0 1440 min = 33.11 m

Recovery 24 hours - 1440 min = 0.26 m

7.1 CONSTANT RATE TEST The pumped bore, RN17593, was pumped at a constant rate of 10 L/s for 1440 minutes (1 day) and recovery was measured for 1440 minutes. The plots show some problems with maintaining a constant rate of 10 L/s but these are only minor. The transmissivity and storativity values are in Table 12.

Table 12 RN17593 Test Pump Results

Bore Jacobs method Recovery method Theis method Walton type curve RN17593 T = 110 RN17589 Deep T = 85

S = 0.01 T = 82 T = 78

S = 0.000033

RN17589 Shallow

T = 120 S = 0.00028

The value of 85 m2/day was selected for the transmissivity value as this is the medium value. The aquifer is semi-confined. Verhoeven and Read (1978) have summarised the transmissivity of bores drilled prior to 1978. The majority of bores in the Cainozoic aquifer are capable of yielding 2 L/s while

19

some bores, such as RN10744 (Warrabri Production No. 7), can be pumped continuously at rates up to 30 L/s. Transmissivity is generally low but can be as high as 150 m2/day as in bore RN10744. The Cambrian and Proterozoic aquifers have been tested at Ali Curung, Murray Downs in the 1975 investigation and at Murray Downs station. In the Cambrian siltstone/micaceous sandstone aquifer transmissivity values were generally low, being in the order of 5 m2/day in bores RN11007 and RN11011. A value of 80 m2/day was calculated for RN11012. Transmissivity values of aquifers in the Cambrian limestone and sandstone aquifers varied widely. The transmissivity in bore RN11178, in the sandstone aquifer (Chabalowe Formation), was calculated to be 700 m2/day while bore RN11180, in the limestone aquifer (Arrinthrunga Formation), had a calculated transmissivity of 40 m2/day. The transmissivity of RN17593 is calculated to be 85 m2/day which is of the same order as RN11180.

20

8 CHEMISTRY Water samples were collected during drilling at increases in yield or changes in water quality. Field measurements of EC and pH were recorded. Selected samples were sent to Darwin for chemical analysis. The samples sent were the first sample collected in the Tertiary, the next significant increase in yield and the last water sample collected. RN17591 only had two samples sent as it did not yield significant amounts of water.

8.1 FIELD EC The field EC’s have been graphed along with the Laboratory EC’s. Most investigation bores generally showed increasing EC with depth. One bore, RN17592, showed decreasing EC with depth. The graphs are in Appendix C.

8.2 CHEMICAL ANALYSIS The chemical analysis of the bores is in Tables 13 and 14.

8.2.1 TDS A contouring program called Surfer has been used to produce a TDS contour map (Figure 6). The contour map shows low TDS water to the south of RN1259 (Bluebush bore), mainly following the drainage line. Bore 15588 shows low TDS water while RN14355, just over 2 km to the south, has a TDS just under 1400 mg/L. The 2001 drilling has better defined the area north and east of Ali Curung. There appears to be a body of low TDS water which does not follow the drainage line. One drainage line has bores with moderate TDS in its upper part (RN6891, TDS 1140 mg/L), lower TDS downstream (RN6890, TDS 740 mg/L) then increasing TDS further downstream going up to 1365 mg/L at RN1262. This suggests that the groundwater salinity is controlled, in part, by the underlying geology.

8.2.2 DUROV DIAGRAMS The chemical data has been plotted up as a durov diagram (Figure 7). The durov diagram with all the chemical data shows mainly typical groundwater characteristics with recharged water having high HCO3 and as the water moves through the system the water moves towards the Cl – SO4 baseline. The cations start out being low in Na + K and move towards the Na + K corner. There is one bore, RN10721, which plots slightly away from the main group in the cation field. This bore is probably drilled into either the Unimbra Sandstone or the Yeeradgi Sandstone or Tertiary sediments.

21

8.2.3 HCO3/Cl RATIO The HCO3/Cl ratio is used as a measure of where recharge is occurring because recharged water is low in Cl and high in HCO3. As water travels through the groundwater system it becomes high in Cl and low in HCO3. The HCO3/Cl ratios were calculated from the first water sample collected. The Surfer contour map, Figure 8, shows recharge is occurring in a northward direction from RN14354 up to RN17593. The contour map also shows recharge occurring at Murray Downs Homestead and at RN10840 to the north west. Generally the bores at Ali Curung show low HCO3/Cl ratios except for RN1801 to the north east. The bore is near an ephemeral lake system. The area west of RN14356 has HCO3/Cl ratios less than 1 which is an indication these are old waters.

22

Table 13 Chemical Analyses (Major Ions) from 2001 Investigation Drilling Programs. RN Date Time Depth

(metres)Discharge

(L/s) pH TDS

(mg/L) Na

(mg/L)Ca

(mg/L)Mg

(mg/L)K

(mg/L)Cl

(mg/L)SO4

(mg/L)HCO3(mg/L)

1259 03/08/2001 12:50 0.1 7.7 1246 297 28 33 74 270 263 391 1261 03/08/2001 15:10 0.01 7.9 566 26 40 55 46 27 21 427 1262 03/08/2001 9:10 7.6 1365 231 83 76 57 350 144 530 7017 03/08/2001 9:30 7.7 711 110 48 42 51 95 34 552 10841 03/08/2001 10:00 0.3 7.7 745 84 80 50 42 97 36 605 14354 03/08/2001 14:15 8.1 416 30 29 38 28 27 21 291 17585 12/07/2001 15:20 30.13 0.2 8.3 859 249 4 3 51 69 40 527 17585 13/07/2001 8:45 60.82 17 8.3 890 213 24 24 44 133 150 357 17585 13/07/2001 12:40 85.22 25 8.3 812 175 28 31 42 122 73 344 17586 14/07/2001 11:00 24.67 0.1 8 1071 156 54 60 55 265 136 270 17586 14/07/2001 13:15 73.47 35 8.1 881 145 50 50 35 213 114 310 17586 16/07/2001 11:35 99.7 40.45 8.1 984 162 59 56 36 255 120 322 17587 17/07/2001 9:10 18.56 0.2 8.2 705 146 19 22 41 70 42 428 17587 17/07/2001 11:10 73.46 12 8.3 702 154 23 25 31 105 82 358 17587 17/07/2001 15:55 109.1 35 8.2 862 152 44 46 33 210 121 328 17588 18/07/2001 16:20 24.76 0.3 8.2 702 125 10 21 105 40 38 476 17588 19/07/2001 8:10 42.97 6 8.4 670 128 9 20 89 33 35 460 17588 19/07/2001 11:45 91.77 15 8.4 838 186 17 29 64 123 105 424 17589 20/07/2001 12:45 24.43 0.4 7.5 454 49 25 36 37 42 29 322 17589 20/07/2001 14:10 61.03 3.5 8.3 498 88 20 28 33 40 37 377 17589 21/07/2001 9:50 91.53 10 8.2 875 192 30 40 34 195 135 365 17590 24/07/2001 15:30 24.43 0.3 7.7 726 134 27 31 38 100 67 401 17590 24/07/2001 16:40 54.93 2.8 8 850 133 52 52 38 215 135 287 17590 25/07/2001 8:30 73.23 7 8.1 949 134 58 56 36 240 143 277 17591 25/07/2001 16:25 30.76 0.6 7.5 632 96 40 37 38 105 58 397 17591 26/07/2001 10:45 79.57 0.9 8 748 128 45 40 28 170 83 366 17592 27/07/2001 13:30 24.57 0.5 7.4 1002 233 25 34 46 230 134 468 17592 27/07/2001 15:25 61.17 5 8.2 798 173 25 36 37 185 106 397 17592 27/07/2001 16:05 73.37 20 8.1 676 136 35 35 31 115 71 448 17593 30/07/2001 13:30 18.54 0.4 8.1 437 37 24 39 32 34 25 330 17593 30/07/2001 15:40 65.07 5 8 472 66 23 30 31 45 31 346 17593 31/07/2001 10:50 66.44 0.5 8.2 706 161 18 33 35 118 108 409 17593 31/07/2001 14:15 90.84 8.3 8.3 941 212 26 42 35 230 156 380 17594 01/08/2001 8:55 37.3 0.3 8.1 491 79 20 25 27 44 28 330 17595 01/08/2001 13:15 25.27 0.25 8.1 854 192 18 27 56 95 51 523 17595 01/08/2001 16:25 67.97 4 8.6 743 194 14 25 43 78 103 444 17595 02/08/2001 10:45 92.37 8 8.3 891 222 23 37 40 195 161 442

23

Table 14 Chemical Analyses from 2001 Investigation Drilling Program RN Date Time Depth

(metres)Discharge

(L/s) pH TDS

(mg/L)Fe

(mg/L)SiO2

(mg/L)NO3

(mg/L)F

(mg/L)HCO3(mg/L)

HCO3/Cl(using meq/L)

Total Hardness (as CaCO3)

Calculation (mg/L)

Total Alkalinity (as CaCO3)

(mg/L) 1259 03/08/2001 12:50 0.1 7.7 1246 <0.1 55 65 1 391 0.84 205.3 320.7 1261 03/08/2001 15:10 0.01 7.9 566 0.1 89 64 1.4 427 9.19 325.5 350.2 1262 03/08/2001 9:10 7.6 1365 0.5 71 107 0.7 530 0.88 519.1 434.7 7017 03/08/2001 9:30 7.7 711 0.1 58 17 0.9 552 3.38 292.2 452.8 10841 03/08/2001 10:00 0.3 7.7 745 0.1 85 8 0.7 605 3.62 405 496.2 14354 03/08/2001 14:15 8.1 416 <0.1 70 66 1.3 291 6.26 228.3 238.7 17585 12/07/2001 15:20 30.13 0.2 8.3 859 u/s 52 85 2.9 527 4.44 22.3 432.2 17585 13/07/2001 8:45 60.82 17 8.3 890 u/s 48 82 1.3 357 1.56 158.4 292.8 17585 13/07/2001 12:40 85.22 25 8.3 812 u/s 47 81 1.4 344 1.64 197.1 282.1 17586 14/07/2001 11:00 24.67 0.1 8 1071 u/s 70 124 1.4 270 0.59 381 221.5 17586 14/07/2001 13:15 73.47 35 8.1 881 u/s 56 73 1.1 310 0.85 330 254.3 17586 16/07/2001 11:35 99.7 40.45 8.1 984 0.1 49 73 1.1 322 0.73 377.1 264.1 17587 17/07/2001 9:10 18.56 0.2 8.2 705 4.9 79 71 2.3 428 3.55 137.7 351.0 17587 17/07/2001 11:10 73.46 12 8.3 702 2.8 46 71 1.8 358 1.98 160 293.6 17587 17/07/2001 15:55 109.1 35 8.2 862 2.2 40 74 1.3 328 0.91 298.6 269.0 17588 18/07/2001 16:20 24.76 0.3 8.2 702 u/s 75 75 1.9 476 6.91 111.1 390.4 17588 19/07/2001 8:10 42.97 6 8.4 670 u/s 73 68 1.7 460 8.10 104.5 390.6 17588 19/07/2001 11:45 91.77 15 8.4 838 u/s 50 64 2.2 424 2.00 161.4 354.4 17589 20/07/2001 12:45 24.43 0.4 7.5 454 5.2 74 29 1.7 322 4.45 210.1 264.1 17589 20/07/2001 14:10 61.03 3.5 8.3 498 4.8 60 25 1.3 377 5.48 164.8 309.2 17589 21/07/2001 9:50 91.53 10 8.2 875 u/s 30 44 2.3 365 1.09 239 299.4 17590 24/07/2001 15:30 24.43 0.3 7.7 726 6.9 77 81 1.5 401 2.33 194.6 328.9 17590 24/07/2001 16:40 54.93 2.8 8 850 1.3 53 73 0.8 287 0.78 343.2 235.4 17590 25/07/2001 8:30 73.23 7 8.1 949 1.5 42 76 0.8 277 0.67 374.6 227.2 17591 25/07/2001 16:25 30.76 0.6 7.5 632 u/s 65 13 1.2 397 2.20 251.7 325.6 17591 26/07/2001 10:45 79.57 0.9 8 748 7.4 64 27 1.3 366 1.25 276.5 300.2 17592 27/07/2001 13:30 24.57 0.5 7.4 1002 u/s 62 1 1.4 468 1.18 201.9 383.9 17592 27/07/2001 15:25 61.17 5 8.2 798 u/s 65 31 1.1 397 1.25 210.1 325.6 17592 27/07/2001 16:05 73.37 20 8.1 676 1.1 53 25 1.1 448 2.26 231 367.4 17593 30/07/2001 13:30 18.54 0.4 8.1 437 3.7 82 33 1.7 330 5.64 219.9 270.7 17593 30/07/2001 15:40 65.07 5 8 472 3.8 67 30 1.4 346 4.47 180.5 283.8 17593 31/07/2001 10:50 66.44 0.5 8.2 706 10.6 12 31 3.6 409 2.01 180.3 335.5 17593 31/07/2001 14:15 90.84 8.3 8.3 941 1.4 23 48 2.7 380 0.96 237.2 311.7 17594 01/08/2001 8:55 37.3 0.3 8.1 491 4 70 40 1.5 330 4.36 152.5 270.7 17595 01/08/2001 13:15 25.27 0.25 8.1 854 u/s 57 92 3.3 523 3.20 155.7 429.0 17595 01/08/2001 16:25 67.97 4 8.6 743 0.3 29 36 5.5 444 3.31 137.5 385.8 17595 02/08/2001 10:45 92.37 8 8.3 891 3.5 21 36 4.5 442 1.32 209.2 362.5

410000 420000 430000 440000 450000 460000 470000 480000Easting (GDA 94)

7640000

7650000

7660000

7670000

7680000

7690000

7700000

Nor

thin

g (G

DA

94)

15176

438

13201

1693216933

13752

14357

2881

180010538578854271118011178

1801

1259

10841

1261

1262

1101111012

701711008

14354

14355

6895

15588

15589

6890

125310840

1260

6896

6891

6898

1258

1257

12697

7016

6897

125611659116571187711876

10844

10843

14356

1758517586

1758717588

17589

17590

1759117592

17595

1890

1490

1230

14721334

1990

1840

1039

105010709979808101080

520

620

745

566

1365

930

680

711730

416

1395

800

455

1480

740

640670

820

690

1140

1170

1190

3460

520

640

1080

6841860193218501590

1445

1520

1750

812984

862838

875

949

748

676

891

300

500

600

800

1000

1500

2000

4000

6000

8000

Warrabri ALT - Murray Downs 2001 InvestigationTotal Dissolved Solids Contours

0 10000 20000 30000 40000 50000

Scale 1: 250 000@ A3 Datum: GDA 94 Figure 6

17590949

LegendBore RNTDS (mg/l)

TDS(mg/l)

Ali Curung - Murray Downs Groundwater Investigation 2001Number of samples=39

RN17585RN17586RN17587RN17588RN17590RN17591RN17592RN17593, RN17589, RN17594RN17595Windmills

Na+

K

Mg

Ca Cl HCO3

SO4

6.0

7.0

8.0

9.0

5000

2000

1000

500

200

Salinity, Total Dissolved Solids (mg/L)

pH

Figure 7

410000 420000 430000 440000 450000 460000 470000 480000Easting (MGA)

7640000

7650000

7660000

7670000

7680000

7690000

7700000N

orth

ing

(MG

A)

438682683

12531257

12581259

1260

177617771800

1801

54275788

6890

6891

6895

6896

6897

6898

7016

1053710538

10721

1074410840

10843

10844

110071100811011

1101211013

111781117911180

116571165811659118761187712698

13201

13752 14355

14356

14357

15176

15588

15589

1693216933

10841

1259

1261

1262

14354

7017

1758517586

1758717588

17590

17591

17592

1759317595

0.41.31.2

8.0

0.3

0.6

4.0

1.6

0.91.11.1

4.2

1.31.2

1.2

0.6

2.3

1.1

1.3

0.6

1.5

1.30.7

5.3

1.58.5

0.4

0.5

2.57.75.0

2.16.3

0.82.12.7

0.30.30.6

0.41.06.6

0.4

0.3 0.9

0.2

0.3

0.2

4.1

0.5

0.30.3

3.6

4.0

9.2

0.9

6.3

3.4

4.40.6

3.66.9

2.3

2.2

2.3

4.53.2

0 m 5000 m 10000 m 15000 m 20000 m 25000 m

Scale 1: 250,000 @ A3

Warrabri - Murray Downs Groundwater Investigation 2001HCO3/Cl contours

15588

Drainage

Tenure BoundariesRoads

4.1 HCO3/Cl ratio

RN

Datum GDA 94, Zone 53

Railway

Figure 8

27

9 GROUNDWATER LEVELS The only long term monitoring bores in the area are at Ali Curung.

Table 15 Monitoring Bores at Ali Curung

Bore Easting Northing Monitoring Period RN5394 438465 7677343 23/02/1967 to 11/08/1971 RN5409 438036 7677299 23/02/1967 to 11/08/1971 and

15/03/1977 to present RN5427 438465 7677343 19/03/1966 to 20/08/1969 and

02/03/1973 to present RN10577 438221 7676932 15/03/1977 to present The data have been plotted up and is shown in Figure 9. The graphs all show the same trends, as would be expected from bores close to each other in the same aquifer. The main feature of the water level graph is the 8 metre rise in water levels from the period 1974 to 1977, then the steady recession until 2000 when the water levels have levelled out and then risen again in 2001. Verhoeven and Read (1978) made an estimate of the volume of water held in storage within the Murray Downs – Warrabri environs - 1.5 x 1010 m3. This estimate was for storage within the Cainozoic aquifer as no bores were monitored in the Cambrian aquifers. Between November 1975 and June 1978 the net regional water level rise was five metres. Based on a specific yield of between 5 and 7%, recharge during this period equated to between 250 and 350 mm. The water levels for the bores drilled in 2001 have been surveyed and plotted in a Surfer water level contour plan (Figure 10). The contour map shows a shallow gradient with the groundwater moving in a north north-west direction towards the Wycliffe Well. In the Wycliffe Well area the water table is above ground level in wetter periods The water requirements of the ecosystem that is maintained in this area requires investigation.

Figure 9

Ali-Curung Water Levels1966 - 2001

362

364

366

368

370

372

66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 00 02

Date

Wat

er L

evel

(met

res

AH

D)

RN005394RN005409RN010577RN005427

430000 440000 450000 460000 470000Easting (MGA)

7650000

7660000

7670000

7680000

7690000

7700000

Nor

thin

g (M

GA

)

15588

1758517586

1758717588

17590

17591

17592

1759317595

5427

369.445

368.324367.577

367.304367.817

367.513

365.121

365.002

359.43

367.532367.948

366.74

Scale 1: 250,000

0 m 5000 m 10000 m 15000 m 20000 m 25000 m

Warrabri - Murray Downs Groundwater Investigation 2001Groundwater contours 03/08/2001

15588

Drainage

Tenure BoundariesRoads

369.445 SWL (m AHD)

RN

Datum GDA 94, Zone 53

Figure 10

30

10 CONCLUSIONS The investigation drilling has located several areas that may warrant further investigation. One area is near RN1259 (Blue Bush bore) where good quality water has been located in a sandstone aquifer of the Chabalowe Formation. Previous work has calculated transmissivity values of 700 m2/day for this aquifer. The other area is north west of RN10841 (Conglomerate bore) were good quality water was located in a conglomerate (Kurinelli Sandstone?). The investigation bore, RN17592, showed decreasing salinity with depth. In the area near RN1259 there are two interconnected aquifers. In the area around RN17593 there are three interconnected aquifers. The aquifers around RN1259 are the Tertiary sediments, maximum yield 2 L/s, and the underlying Chabalowe Formation. The aquifers at RN17593 are the Tertiary sediments, the upper Arrinthrunga formation and the lower Arrinthrunga Formation. The TDS and HCO3/Cl ratio contour map both support the theory that recharge is the main process resulting in improved water quality around and to the south of RN1259. The water level contour plan shows the water is moving in a north north-west direction from RN1259 towards the Wycliffe Well area.

31

11 RECOMMENDATIONS A conceptual hydrogeological model should be developed for the Murray Downs – Singleton - Ali Curung - Wycliffe Well region. Consideration should also be given to the development of a regional numerical groundwater model similar to that recently developed for the Ti Tree Basin. A regional water level and water quality monitoring program is required. Currently water level and water quality monitoring data only exists in the vicinity of Ali Curung.

32

12 REFERENCES Carosone, F. 1990, Singleton – Murray Downs Groundwater Resources Evaluation Stage 1 February 1990, Report No. 12/1990, Power and Water Authority, unpublished report. Sugars, M. & Whitehouse, D. 2000, Land Resources of the Singleton Station Application Area and A Reconnaissance Land Capability Survey Identifying Potential Areas for Horticultural Development in the Singleton – Murray Downs Study Area, DLPE unpublished report. Gilbert, L. & Jolly, P. 1990, Singleton - Murray Downs Groundwater Resource Evaluation - Stage 1 - Summary Report. Report No. 45/1990, Power and Water Authority, unpublished report. Grant, A. R., 1989, The Pastoral Land Resources of Murray Downs Station, Report No. 89/10, unpublished report. Haines, P. W., Bagas, L., Wyche, S., Simons, B. and Morris, D. G., 1991, 1:250,000 Geological Map Series Explanatory Notes Barrow Creek SF53-6, Government Printer of the Northern Territory, Darwin.

APPENDIX A

PRE 2000 BORES IN WARRABRI – MURRAY DOWNS AREA

STATION EASTING(GDA94)

NORTHING(GDA94)

STATION NAME

RN000438 415934 7676899 SPINIFEX BORE. N-S-S-R 6KM (S) OF WARRABRI TURN OFF.RN000682 438348 7677436 No1 PROD. WARRABRI.RN000683 438264 7677070 NO 2 PROD WARRABRI.RN001052 413127 7624170 HOME OF BULLION. DUD NO SUPPLY APX 0.4KM (W) OF DAM.RN001253 459291 7678537 MIDDLE WELL 10.5KM NW OF H/S,20M S OF BORERN001254 453282 7681923 RUSSELL WELL ABD 5KM NNW OF MIDDLE WELL BORERN001255 466024 7673619 HOME STEAD WELL NUMBER 1 ABD 20 M NORTH OF HOME STEADRN001256 466024 7673619 No 2 HOMESTEAD WELL ABD AT HOME STEADRN001257 465006 7677116 HORSE PADDOCK BORE ABD 3.5KM NORTH OF HOMESTEADRN001258 464685 7667298 BILLIES BORE 6.5 KM SOUTH OF HOME STEADRN001259 447207 7665887 BLUE BUSH BORE 21K WSW OF HOMESTEADRN001260 461834 7650134 CHABALOWE BORE 11 KM NORTH OF PADDY'S # 12RN001261 449167 7656909 JERRIES BORE APX 7KM STH OF BLUE BUSHRN001262 449731 7676727 BOTTOM BORE 6KM WSW OF NO 6 BORERN001476 418970 7687527 ARMY BORE 663.U\S.1.2K N & 200 M W OF S\HWY N OF N\J B\RN001776 438186 7677081 PROD,No3. ALI CURANGRN001777 437892 7678129 No4 BORE. ALI CURANGRN001800 437741 7677969 NO 4 [PROD] ALI CURANGRN001801 439860 7679824 PIGGERY No2. ALI CURANGRN002881 434956 7682310 JOB NO.68. ALI CURANGRN003693 414127 7667169 NO.18 B.M.R. NO TRACE APX 1KM (S) OF R/D/B RN15176.RN005394 438464 7677342 B10 INVESTIGATION/ALI CURANGRN005409 437908 7677187 A11 WARRABRIRN005410 438420 7677771 C 11. ALI CURANGRN005411 438701 7677150 B9. ALI CURANGRN005412 438227 7677535 B11. ALI CURANGRN005427 438317 7677165 NO 6 [PROD] WARRABRIRN005788 438099 7676789 NO 5 [PROD] IN USE WARRABRIRN006890 458065 7683884 NUMBER 4 BORE 8KM SOUTH OF NUMBER 3RN006891 462332 7688100 NUMBER 3 6 KM NORTH EAST OF NUMBER 4RN006895 455649 7680004 NUMBER 6 8K E OF #5, 6K ENE BOTTOM BORERN006896 462229 7681680 NUMBER 5 BORE 8KM SOUTH OF NUMBER 4 BORERN006897 466010 7691732 NUMBER 2 5.5 KM NORTH EAST OF NUMBER 3RN006898 462366 7693582 NUMBER 1 4KM WNW OF NUMBER 2RN007016 465947 7681679 NUMBER 7 BORE 7/69 7.5KM NE OF MIDDLE WELL BORERN007017 451274 7682089 NUMBER 8 BORE 6 KM NORTH OF NUMBER 6 BORERN010155 486501 7661798 NUMBER 9 BORE 25KM SE H/S, 1KM S MAIN ROADRN010231 418942 7634547 OSBORNE. CASING REMOVED 19.2km (SE) OF NEW BARROW BORERN010278 490837 7644277 NUMBER 11 BORE 3.4KM WEST OF FENCERN010279 460990 7692745 STATION NUMBER 13 3.5 KM NORTH OF NUMBER 3RN010537 438097 7676713 NO 2 FARM BORE WARRABRIRN010538 437615 7676725 FARM #1 @ ALI CURANG SETTLEMENTRN010577 438097 7676749 FARM BORE WARRABRIRN010721 466319 7672987 HOMESTEAD BORE 40M SOUTH EAST OF HOME STEADRN010744 438263 7676969 NO 7 [PROD] ALI CURANGRN010840 459535 7678059 MIDDLE BORE ADJACENT TO MIDDLE WELLRN010841 447991 7691603 CONGLOMERATE BORE 8.5KM N OF #8, 17KM NW OF #3RN010842 427178 7659560 NELSONS BORE ABD 13K W RN14356 ON MURRAY CRK RDRN010843 473166 7667923 NUMBER 10 BORE 10KM S.E MURRAY DOWN HOMESTEADRN010844 472165 7645731 PADDY'S NO 12 11KM SE OF CHABALOWE BORERN011007 452006 7682067 WR1 75/1 1KM EAST OF NUMBER 8 BORERN011008 452006 7682068 WR1 75/1A 5M SW WRI 75/1, 1KM E MURRAY#8RN011011 450006 7682067 WRI 75/2 1KM WEST OF NUMBER 8

STATION EASTING(GDA94)

NORTHING(GDA94)

STATION NAME

RN011012 450646 7684067 WR1 75/3 2KM NORTH OF NUMBER 8RN011013 450646 7684068 WR1 75/3A 2KM NTH No8 BORERN011178 438587 7677626 WR1 75/4. WARRABRI.RN011179 438593 7677630 WR1 75/4 A. WARRABRI.RN011180 438315 7676548 WR1 75/5. WARRABRI.RN011181 438312 7676550 WR1 75/5 A OBS BORE. WARRABRI.RN011657 467127 7673169 1/77 ABB BACK FILLED 500M SOUTH OF MURRAY DOWNSRN011658 466932 7672699 2/77 DUD 200 M NW OF 1/77RN011659 466932 7672699 3/77,CROOK WATER CASING PULLED 200M EAST OF 2/77RN011875 467851 7673607 MURRAY DOWNS 78/1 DRY DUD 1.5 KM EAST OF HOME STEADRN011876 468765 7673602 MURRAY DOWNS 78/2 DUD 600M EAST OF MURRAY DOWNS 78/1RN011877 468638 7673437 MURRAY DOWNS 78/3 400M ENE OF MURRAY DOWNS 78/2RN012697 465836 7672900 (80/1) COMMUNITY MURRAY DOWNSRN012698 465887 7672921 (80/2) [PROD-USE] COM TRIPOD MURRAY DOWNS IMANGARARN013201 416746 7681945 PPT 121/8,WARRABRI ROAD JOB. 200m (W) OF WARRABI TURN ORN013323 430173 7634146 A 46/11 SALTY DUD 3KM INTO MURRAY DOWNS, 7K SSERN013324 486539 7661928 A46/13 NUMBER 9 REPLACEMENT 10M EAST OF OLD #9 (RN101RN013325 490177 7632652 A 46/12 NUMBER 14 BORE 30K N OF SW BOUNDARY & 4.5KM WRN013751 421627 7629670 RN13751..RAILWAY. 269.5km & 150m (W) OF C/LINE.RN013752 419427 7656669 RN13752...RAILWAY. 296.8km & 150m (W) OF C/LINE.RN013759 421577 7629570 RN13759...RAILWAY. 269km & (W) OF C/LINE.RN013760 421777 7633220 RN13760...RAILWAY LINE. 273km & 150m (W) OF C/LINE.RN013761 421627 7630370 RN13761...RAILWAY LINE. 270.2km & 150m (W) OF C/LINE.RN013870 475599 7676753 MURRAY DOWNS A46/15 DUD ESE OF AMELIA WATERHOLERN013976 426885 7641788 ADVICE A46/14 DRY DUD APX 9KM NNW OF RN 13323RN014354 453093 7648669 A46/16 10.5KM WEST OF CHABALOWE BORERN014355 455566 7656389 A 46/17 MILL BORE 9.5 KM NW OF CHABALOWE BORERN014356 439462 7663733 A 46/18 9KM WSW OF BLUE BUSH BORERN014357 427181 7659565 NELSONS REPLACEMENT 4M EAST OF OLD NELSON- RN10842RN015175 420629 7700287 RN 15175 ROADS BORE (SUC) 27M (SSE) OF MILL RN437 NSSRRN015176 414980 7671397 RN 15176 ROADS BORE (SUC) 5KM (S) OF SPINIFEX BORE.RN015588 455691 7659150 WRB INV OBS 2.8K NTH OF RN 14355 MILL BORERN015589 456075 7668318 WRB INV OBS 12K NTH OF RN 14355 MILL BORERN015965 417127 7635070 NEUTRAL JUNC. 2KM (NW) OF OSBORNE BORE.RN015969 420127 7644669 15KM EAST ALONG MURRAY DOWNS RD & 12KM (S) ALONRN016932 417086 7679118 1/96RN016933 417250 7679120 2/96

APPENDIX B

COMPOSITE LOGS AND GEOLOGICAL LOGS

254 mm dia.hole.203 mm ID steel,cemented.

200 mm dia.hole.

100 mm Class 12PVC.

100 mm Class 12slotted PVC.

Bottom Cap.Fallback.

TD 85.89m

03/08/2001SWL 10.2m

Q = 0.2 l/sTDS = 859 mg/l

Q = 17 l/sTDS = 890 mg/l

Q = 25 l/sTDS = 812 mg/l

SAND: silty, reddish brown,fine grained to coarse grained,poorly sorted, mainly quartz.SAND: silty, clayey, lightbrown, fine grained to coarsegrained, poorly sorted, mainlyquartz, and minor calcrete,white (N9).SAND: clayey, dark yellowishorange and minor moderatereddish orange, fine grained tocoarse grained, poorly sorted,mainly quartz.SAND: clayey, moderatereddish orange to moderatereddish brown, sub-angular torounded, poorly sorted, mainlyquartz.SILTSTONE: sandy, darkyellowish orange.SAND: silty, clayey, moderatereddish orange, fine grained tomedium grained, mainly quartz.CLAY: pale yellowish orangeand reddish brown.SAND: clayey, reddish brown,fine grained to mediumgrained, quartz. Minor ironcementing.SAND: clayey and CLAY:sandy, light brown, sand finegrained to coarse grained,mainly quartz.CLAY: sandy, pale yellowishorange. Sand fine grained tomedium grained.SANDSTONE: calacreous,light grey, with bands of clay,pale yellowish orange andsiltstone, moderate red todusky red.SANDSTONE: moderateyellow, medium grained tocoarse grained, sub-rounded torounded, moderately sortedquartz.CLAY: mottled greyish yellowand greyish purple.SANDSTONE: moderateyellow, medium grained tocoarse grained, sub-rounded torounded, moderately sortedquartz.SANDSTONE: moderateyellow, medium grained tocoarse grained, sub-rounded torounded, moderately sortedquartz.

STRATADESCRIPTION GAMMA LOG GROUNDWATER

INFLOWS

0

BORECONSTRUCTION

GRAPHICLOG

GROUNDWATERINFLOWS

250

BORECONSTRUCTION

GRAPHICLOG

RN17585

DEPTH(m)

DEPTH(m)

Murray Downs GW Investigation 2001

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NATURAL RESOURCESCOMPOSITE LOG OF BORE

DATE(S) DRILLED 12-13/07/2001

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GEOLOGICAL LOG RN17585

Depth (m) Description

0 3 SAND: silty, reddish brown (10R 4/4), fine grained to coarse grained, sub-angular to rounded, poorly sorted, mainly quartz.

3 6 SAND: silty, clayey, light brown (5YR 5/6), fine grained to coarse grained, sub-angular to rounded, poorly sorted, mainly quartz (10% lithic fragments), and minor calcrete, white (N9).

6 9 SAND: clayey, dark yellowish orange (10YR 6/6) and minor moderate reddish orange (10R 6/6), fine grained to coarse grained, sub-angular to rounded, poorly sorted, mainly quartz (10% lithic fragments).

9 12 SAND: clayey, moderate reddish orange (10R 6/6) to moderate reddish brown (10R 4/6), fine grained to coarse grained, sub-angular to rounded, poorly sorted, mainly quartz (10% lithic fragments).

12 15 SILTSTONE: sandy, dark yellowish orange (10YR 6/6), sand fine grained, sub-rounded to rounded quartz.

15 18 SAND: silty, clayey, moderate reddish orange (10R 6/6), fine grained to medium grained, sub-angular to rounded, mainly quartz (10% lithic fragments).

18 21 CLAY: pale yellowish orange (10YR 7/2) and reddish brown (10R 6/4). 21 30 SAND: clayey, reddish brown (10R 6/4), fine grained to medium grained, sub-

angular to rounded quartz. Minor iron cementing. 30 38 SAND: clayey and CLAY: sandy, light brown (5YR 5/6), sand fine grained to

coarse grained, sub-angular to rounded, mainly quartz . 38 45 CLAY: sandy, pale yellowish orange (10YR 6/2). Sand fine grained to

medium grained. 45 56 SANDSTONE: calcareous, light grey (N7), with bands of clay, pale yellowish

orange (10YR 6/2) and siltstone, moderate red (5R 4/4) to dusky red (5R 3/4) 56 57 SANDSTONE: moderate yellow (5Y 7/6), medium grained to coarse grained

(0.3 – 0.6 mm), sub-rounded to rounded, moderately sorted quartz. 57 60 CLAY: mottled greyish yellow (5Y 8/4) and greyish purple (5P 4/2). 60 82 SANDSTONE: moderate yellow (5Y 7/6), medium grained to coarse grained

(0.3 – 0.6 mm), sub-rounded to rounded, moderately sorted quartz. Hard drilling from 60 metres. 78 metres fragments of porous limestone and chert nodules on surface of discharge area.

82 85.22 SANDSTONE: moderate yellow (5Y 7/6), medium grained to coarse grained (0.3 – 0.6 mm), sub-rounded to rounded, moderately sorted quartz. Also fragments of Calc Arenite, grey (N6). Very hard drilling.

Colours described from wet samples. TD 85.22metres SUMMARY 0 - 3 metres Quaternary

3 - 45 metres Tertiary 45 – 85.22 metres Chabalowe Formation

R. J. Paul Hydrogeologist, Alice Springs 15/10/2001

254 mm dia.hole. 203 mm IDsteel, cemented.

200 mm dia.hole. 50 mmClass 12 PVC.


Bottom Cap.

Fallback.

TD 90.7m

03/08/2001SWL 15.19m

Q = 0.1 l/sTDS = 1071 mg/l

Q = 35 l/sTDS = 881 mg/l

Q = 40 l/sTDS = 984 mg/l

SAND: moderate red, finegrained to coarse grained,poorly sorted quartz.CLAY: sandy, gravely, pebbly,yellowish brown.SAND: yellowish orange, finegrained to coarse grained, withminor calcrete.SAND: light brown, finegrained to coarse grained,sub-angular to rounded,quartz.CLAY: sandy, firm, reddishbrown.CLAY: sandy, firm, reddishbrown then SAND: clayey, lightbrown, fine grained to coarsegrained, sub-angular torounded quartz.SAND: clayey, dark reddishbrown, fine grained to mediumgrained, quartz going intoCLAY: sandy, soft, moderatereddish brown, and GRAVEL:pisolitic, mottled dark yellowishorange and dusky red.SAND: clayey, dark reddishbrown, fine grained to merdiumgrained, quartz.CLAYSTONE: mottledmoderate red brown, darkyellowish orange and white.CLAY: sandy, light brown andyellowish grey.SANDSTONE: yellowish grey,fine grained quartz.CLAYSTONE: light brown andyellowish grey.SANDSTONE: yellowishorange, fine grained to coarsegrained, sub-rounded,moderately sorted quartz.CLAY: light greenish grey,greyish orange and minormoderate red.SANDSTONE: yellowishorange and minor yellowishgrey, fine grained to mediumgrained, sub-rounded,moderately sorted quartz.CLAY: dark reddish orange,SILTSTONE, light greenishgrey and SANDSTONE, paleyellowish brown.CLAY: dark yellowish orangeand SANDSTONE, darkreddish brown.SANDSTONE, dark reddishbrown and CLAY: darkyellowish orange.SANDSTONE: moderatebrown with silty bands andminor Clay, yellowish grey.


INFLOWS

0

BORECONSTRUCTION

GRAPHICLOG

GROUNDWATERINFLOWS

250

BORECONSTRUCTION

GRAPHICLOG

RN17586

DEPTH(m)

DEPTH(m)


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0 3 SAND: moderate red (10R 4/6), fine grained to coarse grained, sub-angular to rounded, poorly sorted quartz, then becoming clayey, moderate brown (5YR 4/4) and gravely.

3 6 CLAY: sandy, gravely, pebbly, yellowish brown (10YR 5/4). 6 9 SAND: yellowish orange (10YR 6/4), fine grained to coarse grained, sub-

angular to rounded, with minor calcrete. 9 12 SAND: light brown (5YR 6/4), fine grained to coarse grained, sub-angular to

rounded, quartz. 12 15 CLAY: sandy, firm, reddish brown (2.5YR 5/6), sand fine grained to medium

grained, sub-rounded to rounded quartz. 15 18 CLAY: sandy, firm, reddish brown (2.5YR 5/6), sand fine grained to medium

grained, sub-rounded to rounded quartz then SAND: clayey, light brown (5YR 5/6), fine grained to coarse grained, sub-angular to rounded quartz.

18 21 SAND: clayey, dark reddish brown (10R 3/4), fine grained to medium grained, sub-angular to rounded quartz.

21 24 SAND: clayey, dark reddish brown (10R 4/4), fine grained to medium grained, sub-angular to rounded quartz going into CLAY: sandy, soft, moderate reddish brown (10R 6/6), and GRAVEL: pisolitic, mottled dark yellowish orange (10YR 6/6) and dusky red (5R 5/4).

24 27 SAND: clayey, dark reddish brown (10R 4/4), fine grained to medium grained, sub-angular to rounded quartz and minor clay, dark yellowish orange (10YR 6/6) and clay, white (N9), firm with minor iron staining.

27 30 SAND: clayey, dark reddish brown (10R 3/4), fine grained to medium grained, sub-angular to rounded quartz and minor clay, white (N9), firm with minor iron staining.

30 35 CLAYSTONE: mottled moderate red brown (5R 4/6), dark yellowish orange (10YR 6/6) and white (N9) and minor Sandstone, white (N9), fine grained, micaceous.

35 42 CLAY: sandy, light brown (5YR 5/6) and yellowish grey (5YR 5/2). 42 48 SANDSTONE: yellowish grey (5Y 6/2), fine grained quartz. 48 61 CLAYSTONE: light brown (5YR 5/6) and yellowish grey (5YR 7/2). 61 63 SANDSTONE: yellowish orange (10YR 6/4), fine grained to coarse grained,

sub-rounded, moderately sorted quartz. 63 66 CLAY: light greenish grey (5GY 8/1), greyish orange (10YR 7/4) and minor

moderate red (5R 5/4). 66 81 SANDSTONE: yellowish orange (10YR 6/4) and minor yellowish grey

(5Y 8/1), fine grained to medium grained, sub-rounded, moderately sorted quartz.

81 84 CLAY: dark reddish orange (10YR 6/6), SILTSTONE, light greenish grey and SANDSTONE, pale yellowish brown (10YR 7/2).

84 87 CLAY: dark yellowish orange (10YR 6/6) and SANDSTONE, dark reddish brown (10R 3/2).

87 90 SANDSTONE, dark reddish brown (10R 3/2) and CLAY: dark yellowish orange (10YR 6/6).

90 90.7 SANDSTONE: moderate brown (5YR 3/4) with silty bands and minor Clay,

yellowish grey (5Y 7/2). Colours described from wet samples. TD 90.70 metres SUMMARY 0 - 3 metres Quaternary 3 - 42 metres Tertiary 42 – 90.7 metres Chabalowe Formation R. J. Paul Hydrogeologist, Alice Springs 15/10/2001


200 mm dia.hole.

50 mm Class 12PVC.


Bottom Cap.

Fallback.

TD 109.1m

03/08/2001SWL 12.79m

Q = 0.2 l/sTDS = 705 mg/l

Q = 12 l/sTDS = 702 mg/l

Q = 35 l/sTDS = 862 mg/l

SAND: moderate reddishbrown, going into calcrete.CALCRETE: mottled white andlight brown to pale reddishbrown.

SILT: sandy, yellowish grey.

SAND: silty, slightly clayey,dark reddish brown, finegrained to medium grained,sub-angular to rounded quartz.SAND: silty, slightly clayey,dark reddish brown, finegrained to medium grained,sub-angular to rounded quartzand GRAVEL: pisolitic, mottleddark yellowish orange anddusky red.CLAY: slightly sandy, moderatereddish orange and white.CLAY: slightly sandy, whiteand pale yellowish orange,firm.CLAY: sandy, white and darkyellowish orange, firm to hard.

CLAY: sandy, moderate yellow,soft.

SILTSTONE: slightly sandy,reddish brown.SILTSTONE: reddish brownand CLAY: light brown withminor SILTSTONE: grey, softand minor SANDSTONE:white.SANDSTONE: white to lightgrey, fine grained to mediumgrained, sub-rounded torounded, well sorted, friable,porous quartz and CLAY:yellowish grey and minorSANDSTONE: clayey,moderate reddish brown.

SANDSTONE: light grey, finegrained to medium grained,sub-rounded to rounded,moderately sorted quartz.

SANDSTONE: light grey,SILTSTONE: dark reddishbrown and CLAY: sandy,moderate yellow.SANDSTONE: yellowishorange, and CLAY: sandy, paleolive.SANDSTONE: silty, paleyellowish brown, calcareousmatrix with little or no porosityand SILTSTONE: reddishbrown and CLAY: pale olive.


INFLOWS

0

BORECONSTRUCTION

GRAPHICLOG

GROUNDWATERINFLOWS

250

BORECONSTRUCTION

GRAPHICLOG

RN17587

DEPTH(m)

DEPTH(m)


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0 3 SAND: moderate reddish brown (10R 6/6), fine grained to coarse grained, sub-angular to rounded, poorly sorted quartz, then going into calcrete, mottled white (N9) and light brown (5YR 5/4) to pale reddish brown (10R 5/4).

3 6 CALCRETE: mottled white (N9) and light brown (5YR 5/4) to pale reddish brown (10R 5/4).

6 9 CALCRETE: mottled white (N9) and light brown (5YR 5/4) to pale reddish brown (10R 5/4) going into SILT: sandy, yellowish grey (5Y 7/2).

9 12 SILT: sandy, yellowish grey (5Y 7/2). 12 15 SAND: silty, slightly clayey, dark reddish brown (10R 3/4), fine grained to

medium grained, sub-angular to rounded quartz. 15 18 SAND: silty, slightly clayey, dark reddish brown (10R 3/4), fine grained to

medium grained, sub-angular to rounded quartz and GRAVEL: pisolitic, mottled dark yellowish orange (10YR 6/6) and dusky red (5R 5/4)..

18 21 CLAY: slightly sandy, moderate reddish orange (10R 6/6) and white (N9). 21 24 CLAY: slightly sandy, white (N9). 24 27 CLAY: slightly sandy, moderate reddish orange (10R 6/6) and white (N9). 27 30 CLAY: slightly sandy, white (N9) and pale yellowish orange (10YR 8/4),

firm. 30 33 CLAY: sandy, white (N9) and dark yellowish orange (10YR 6/6), firm to hard.33 49 CLAY: sandy, white (N9) and dark yellowish orange (10YR 6/6), firm to hard.49 60 CLAY: sandy, moderate yellow (5Y 7/5), soft. 60 63 SILTSTONE: slightly sandy, reddish brown (10R 4/4). 63 66 SILTSTONE: reddish brown (10R 4/4) then SILTSTONE: grey (N7). 66 69 SILTSTONE: reddish brown (10R 4/4) and CLAY: light brown (5YR 6/4),

soft and minor SANDSTONE: white (N9). 69 72 SILTSTONE: reddish brown (10R 4/4) and CLAY: light brown (5YR 6/4),

soft and minor SANDSTONE: white (N9). Going into SANDSTONE, white (N9) to light grey (N7), fine grained, sub-rounded to rounded, well sorted, friable, porous quartz.

72 75 SANDSTONE: white (N9) to light grey (N8), fine grained to medium grained, sub-rounded to rounded, well sorted, friable, porous quartz.

75 78 SANDSTONE: white (N9) to light grey (N8), fine grained to medium grained, sub-rounded to rounded, well sorted, friable, porous quartz and minor SANDSTONE: clayey, moderate reddish brown (10R 4/6).

78 81 SANDSTONE: white (N9) to light grey (N8), fine grained to medium grained, sub-rounded to rounded, well sorted, friable, porous quartz.

81 84 SANDSTONE: white (N9) to light grey (N8), fine grained to medium grained, sub-rounded to rounded, well sorted, friable, porous quartz and CLAY: yellowish grey (5Y 7/4).

84 87 SANDSTONE: white (N9), fine grained to medium grained, sub-rounded to rounded, well sorted, friable, porous quartz.

87 90 SANDSTONE: white (N9) to light grey (N8), fine grained to medium grained , sub-rounded to rounded, well sorted, friable, porous quartz and CLAY: yellowish grey (5Y 7/4).

90 99 SANDSTONE: light grey (N7.5), fine grained to medium grained, sub-

rounded to rounded, moderately sorted quartz. 99 102 SANDSTONE: light grey (N7.5), fine grained to medium grained, sub-

rounded to rounded, moderately sorted quartz and SILTSTONE: dark reddish brown (10R 3/4) and CLAY: sandy, moderate yellow (5Y 7/6).

102 105 SANDSTONE: yellowish orange (10R 5/4), fine grained to medium grained, sub-rounded to rounded, moderately sorted quartz and CLAY: sandy, pale olive (10Y 7/2).

105 109.1 SANDSTONE: silty, pale yellowish brown (10YR 6/2), calcareous matrix with little or no porosity and SILTSTONE: reddish brown (10R 4/4) and CLAY: pale olive (10Y 7/2).

Colours described from wet samples. TD 109.10 metres SUMMARY 0 - 3 metres Quaternary 3 - 35 metres Tertiary 96 – 109.1 metres Chabalowe Formation R. J. Paul Hydrogeologist, Alice Springs 15/10/2001


200 mm dia.hole.

50 mm Class 12PVC.


Bottom Cap.TD 91.77m

03/08/2001SWL 10.49m

Q = 0.3 l/sTDS = 702 mg/l

Q = 6 l/sTDS = 670 mg/l

Q = 15 l/sTDS = 838 mg/l

SAND: moderate reddishbrown, fine grained to coarsegrained, sub-angular torounded, poorly sorted quartz,then going into calcrete,mottled white and light brown.CALCRETE: mottled white andlight brown.SAND: silty, yellowish brown,fine grained to coarse grained,sub-angular to rounded, poorlysorted quartz.SAND: silty, yellowish brown,fine grained to coarse grained,sub-angular to rounded, poorlysorted quartz.SAND: silty, dark reddishbrown, fine grained to coarsegrained, sub-angular torounded, poorly sorted quartz.CLAY: sandy, white, darkyellowish orange and lightbrown. Sand fine grained tomedium grained quartz.CLAY: sandy, white, darkyellowish orange and lightbrown. Sand fine grained tomedium grained quartz. Alsogetting pisolitic gravel.CLAY: sandy, white, darkyellowish orange and lightbrown. Sand fine grained tomedium grained quartz. Alsogetting pisolitic gravel andSiltstone, dark reddish brown.LIMESTONE: grey, with someclay bands.LIMESTONE: grey, with somesiltstone bands, black.LIMESTONE: yellowish greywith minor CLAY, light grey.LIMESTONE: light grey.SANDSTONE: greyish red topale red, fine grained quartzand SILTSTONE: greyish redto pale red.MUDSTONE: dark grey.LIMESTONE: medium grey tolight grey and minorSILTSTONE: dark reddishbrown.MUDSTONE: dark grey andminor CLAYSTONE, very lightgrey.LIMESTONE: light grey tomedium grey, minorSANDSTONE, light brown, finegrained to medium grainedquartz.MUDSTONE: dark grey.


INFLOWS

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RN17588

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0 3 SAND: moderate reddish brown (10R 6/6), fine grained to coarse grained, sub-angular to rounded, poorly sorted quartz, then going into calcrete, mottled white (N9) and light brown (5YR 5/4).

3 6 CALCRETE: mottled white (N9) and light brown (5YR 5/4) with minor black veining.

6 9 SAND: silty, yellowish brown (10YR 5/6), fine grained to coarse grained, sub-angular to rounded, poorly sorted quartz.

9 15 SAND: silty, yellowish brown (10YR 4.5/6), fine grained to coarse grained, sub-angular to rounded, poorly sorted quartz.

15 18 SAND: silty, dark reddish brown (10R 3/4), fine grained to coarse grained, sub-angular to rounded, poorly sorted quartz.

18 21 CLAY: sandy, white (N9), dark yellowish orange (10YR 6/6) and light brown (5YR 5/6). Sand fine grained to medium grained quartz.

21 36 CLAY: sandy, white (N9), dark yellowish orange (10YR 6/6) and light brown (5YR 5/6). Sand fine grained to medium grained quartz. Also getting pisolitic gravel.

36 45 CLAY: sandy, white (N9), dark yellowish orange (10YR 6/6) and light brown (5YR 5/6). Sand fine grained to medium grained quartz. Also getting pisolitic gravel and Siltstone, dark reddish brown (10R 3/4).

45 52 LIMESTONE: grey (N5), with some clay bands. 52 54 LIMESTONE: grey (N5), with some siltstone bands, black. 54 63 LIMESTONE: yellowish grey (5Y 8/1) with minor CLAY, light grey (N7). 63 66 LIMESTONE: light grey (N7). 66 69 SANDSTONE: greyish red (10R 4/2) to pale red (10R 6/2), fine grained

quartz and SILTSTONE: greyish red (10R 4/2) to pale red (10R 6/2). 69 72 MUDSTONE: dark grey (N3). 72 81 LIMESTONE: medium grey (N5) to light grey (N7) and minor SILTSTONE:

dark reddish brown (10R 3/4). 81 84 MUDSTONE: dark grey (N7) and minor CLAYSTONE, very light grey (N8).84 87 LIMESTONE: light grey (N7) to medium grey (N5), minor SANDSTONE,

light brown (5YR 7/4), fine grained to medium grained quartz. 87 91.77 MUDSTONE: dark grey (N3). Colours described from wet samples. TD 91.77 metres SUMMARY 0 - 3 metres Quaternary 3 - 45 metres Tertiary 45 – 91.77 metres Chabalowe Formation R. J. Paul Hydrogeologist, Alice Springs 15/10/2001


200 mm dia.hole.

50 mm Class 12PVC.

Slotted PVC

Bentonite Seal

200 mm dia hole

50 mm Class 12PVC

Bentonite Seal50 mm Class 12PVC

Slotted PVC

FallbackTD 91.53m

03/08/2001SWL 9.14m

Q = 0.4 l/sTDS = 454 mg/l

Q = 3.5 l/sTDS = 498 mg/l

Q = 10 l/sTDS = 875 mg/l

SAND: silty, dark reddishbrown, with fragments ofsandstone.SAND: silty, slightly clayey,light brown, with minor ironcemented patches andsandstone fragments.SAND: silty, slightly clayey toclayey, moderate brown, withminor iron cemented patchesand sandstone fragments.SAND: silty, clayey, moderatebrown, fine grained to coarsegrained, sub-angular tosub-rounded, poorly sortedquartz with minor ironcemented patches andsandstone fragments.CLAY: sandy, light brown.CLAY: sandy, mottled lightbrown and yellowish grey.

SILTSTONE: sandy, darkreddish brown and minorCLAY, pinkish grey.SILTSTONE: pale greenishgrey.CLAYSTONE: yellowish grey.

SANDSTONE: clayey,yellowish grey, fine grained tomedium grained quartz.LIMESTONE: yellowish grey.SILTSTONE: moderate reddishbrown.MUDSTONE: dark grey andminor LIMESTONE.CLAY: greyish yellow andminor LIMESTONE.SANDSTONE: yellowish greyand LIMESTONE: light olivegrey to medium light grey.SANDSTONE: pinkish greyand minor SANDSTONE, lightbrown and SILTSTONE,reddish brown.SANDSTONE: pinkish greyand minor SANDSTONE, lightbrown and SILTSTONE,reddish brown andLIMESTONE: massive, grey todark grey.SANDSTONE: greyish yellow,fine grained and LIMESTONE,dark grey.SANDSTONE: yellowish grey,fine grained to mediumgrained, sub-rounded tosub-angular quartz.LIMESTONE, dark grey andminor SANDSTONE: greyishyellow.SANDSTONE: calcareous,yellowish grey, fine grained tomedium grained, sub-roundedto sub-angular quartz.


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RN17589

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Depth (m)

13 Description 0 3 SAND: silty, dark reddish brown (10R 3/6), fine grained to coarse grained,

sub-angular to sub-rounded, poorly sorted quartz with fragments of sandstone.3 9 SAND: silty, slightly clayey, light brown (5YR 6/4), fine grained to coarse

grained, sub-angular to sub-rounded, poorly sorted quartz with minor iron cemented patches and sandstone fragments.

9 12 SAND: silty, slightly clayey, light brown (5YR 5/4), fine grained to coarse grained, sub-angular to sub-rounded, poorly sorted quartz with minor iron cemented patches and sandstone fragments.

12 18 SAND: silty, slightly clayey, moderate brown (5YR 4/4), fine grained to coarse grained, sub-angular to sub-rounded, poorly sorted quartz with minor iron cemented patches and sandstone fragments.

18 21 SAND: silty, clayey, moderate brown (5YR 4/4), fine grained to coarse grained, sub-angular to sub-rounded, poorly sorted quartz with minor iron cemented patches and sandstone fragments.

21 24 CLAY: sandy, light brown (5YR 5/4). Sand fine grained to medium grained, sub-rounded to rounded, poorly sorted quartz.

24 30 CLAY: sandy, light brown (5YR 5/5). Sand fine grained to coarse grained, sub-angular to sub-rounded, poorly sorted quartz with iron cemented patches and sandstone fragments, coarse grained to very coarse grained.

30 36 CLAY: sandy, mottled light brown (5YR 7/4) and yellowish grey (5YR 6/2). Sand fine grained to coarse grained, sub-angular to sub-rounded, poorly sorted quartz with iron cemented patches and sandstone fragments, coarse grained to very coarse grained.

36 39 SILTSTONE: sandy, dark reddish brown (10R 3/4) and minor CLAY, pinkish grey (5YR 8/1).

39 45 SILTSTONE: pale greenish grey (10Y 8/1). 45 51 CLAYSTONE: yellowish grey (5Y 8/1). 51 54 SANDSTONE: clayey, yellowish grey (5Y 7/2), fine grained to medium

grained quartz. 54 57 LIMESTONE: yellowish grey (5Y 6/2). 57 60 SILTSTONE: moderate reddish brown (10R 4/6). 60 63 MUDSTONE: dark grey (N7) and minor LIMESTONE. 63 66 CLAY: greyish yellow (5Y 8/1) and minor LIMESTONE. 66 72 SANDSTONE: yellowish grey (5Y 6/2) and LIMESTONE: light olive grey

(5Y 6/1) to medium light grey (N6). 72 75 SANDSTONE: pinkish grey (5YR 8/1) and minor SANDSTONE, light brown

(5YR 6/4) and SILTSTONE, reddish brown (10R 4/4). 75 78 SANDSTONE: pinkish grey (5YR 8/1) and minor SANDSTONE, light brown

(5YR 6/4) and SILTSTONE, reddish brown (10R 4/4) and LIMESTONE: massive, grey (N5) to dark grey (N3).

78 81 SANDSTONE: greyish yellow (5Y 7/4), fine grained and LIMESTONE, dark grey (N3).

81 84 SANDSTONE: yellowish grey (5Y 8/2), fine grained to medium grained, sub-rounded to sub-angular quartz.

84 87 LIMESTONE, dark grey (N3) and minor SANDSTONE: greyish yellow (5Y 7/4).

87 91.53 SANDSTONE: calcareous, yellowish grey (5Y 8/2), fine grained to medium grained, sub-rounded to sub-angular quartz.

Colours described from wet samples. TD 91.53 metres SUMMARY 0 - 3 metres Quaternary 3 – 39 metres Tertiary 39 – 91.53 metres Arrinthrunga Formation R. J. Paul Hydrogeologist, Alice Springs 15/10/2001


200 mm dia.hole.

100 mm Class 12PVC.


Bottom Cap.Fallback. TD 73.23m

03/08/2001SWL 14.9m

Q = 0.3 l/sTDS = 726 mg/l

Q = 2.8 l/sTDS = 850 mg/l

Q = 7 l/sTDS = 949 mg/l

SAND: dark reddish brown,fine grained to coarse grained,poorly sorted quartz.CALCRETE: mottled white andlight brown.SAND: silty, light brown, finegrained to coarse grained,poorly sorted quartz. Minoriron cemented patches.SAND: silty, light brown, finegrained to coarse grained,sub-angular to rounded, poorlysorted quartz. Minor ironcemented patches.CLAY: sandy, firm, light brownand reddish brown. Somesecondary porosity. Sand finegrained to medium grainedquartz.CLAY: sandy, firm, mottledwhite and light brown. Sandfine grained to medium grainedquartz.CLAY: white with minor brownmottling and minor sandstone,very light grey, fine grained,sub-rounded, well sortedquartz.CLAY: white with minor brownmottling and minor sandstone,very light grey, fine grained,sub-rounded, well sortedquartz.SANDSTONE: kaolinitic, white,fine grained, sub-rounded torounded quartz with minorchert fragments.SANDSTONE: kaolinitic, whiteto very light gre, fine grained ,sub-rounded to rounded quartzand minor clay, light brown.CLAY: sandy, mottled whiteand greyish orange.SANDSTONE: kaolinitic, whiteto very light grey, fine grainedto very coarse grained,sub-angular to rounded quartz.CLAY: white and brown, somechert fragments.


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RN17590

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0 3 SAND: dark reddish brown (10R 3/6), fine grained to coarse grained, sub-angular to rounded, poorly sorted quartz.

3 6 CALCRETE: mottled white (N9) and light brown (5YR 5/4). 6 9 SAND: silty, light brown (5YR 5/4), fine grained to coarse grained, sub-

angular to rounded, poorly sorted quartz. Minor iron cemented patches. 9 12 SAND: silty, light brown (5YR 6/4), fine grained to coarse grained, sub-



angular to rounded, poorly sorted quartz and CLAY: sandy, soft, light brown (5YR 6/4). Sand fine grained to medium grained quartz.

24 30 CLAY: sandy, firm, light brown (5YR 5/6) and reddish brown (10R 5/6). Some secondary porosity. Sand fine grained to medium grained quartz.

30 36 CLAY: sandy, firm, mottled white (N9) and light brown (5YR 7/4). Sand fine grained to medium grained quartz. Getting dark grey (N3) layers 35- 36 metres

36 42 CLAY: white (N9) with minor brown mottling and minor sandstone, very light grey (N8), fine grained, sub-rounded, well sorted quartz.

42 48 CLAY: white (N9) with minor brown mottling and minor sandstone, very light grey (N8), fine grained, sub-rounded, well sorted quartz.

48 51 SANDSTONE: kaolinitic, white (N9), fine grained, sub-rounded to rounded quartz with minor chert fragments.

51 60 SANDSTONE: kaolinitic, white (N9) to very light grey (N8), fine grained , sub-rounded to rounded quartz and minor clay, light brown (5YR 7/4).

60 63 CLAY: sandy, mottled white (N9) and greyish orange (10YR 7/4). 63 66 SANDSTONE: kaolinitic, white (N9) to very light grey (N8), fine grained to

very coarse grained, sub-angular to rounded quartz. 66 73.23 CLAY: white and brown, some chert fragments. Colours described from wet samples. TD 73.23 metres SUMMARY 0 - 3 metres Quaternary 3 - 35 metres Tertiary 35 – 73.23 metres Chabalowe? Formation R. J. Paul Hydrogeologist, Alice Springs 15/10/2001


200 mm dia.hole.

50 mm Class 12PVC.


Bottom Cap.

TD 79.56m

03/08/2001SWL 16.6m

Q = 0.6 l/sTDS = 632 mg/l

Q = 0.9 l/sTDS = 748 mg/l

SAND: dark reddish brown,fine grained to coarse grained,poorly sorted quartz.CLAYSTONE: sandy, mottledwhite and light brown.SAND: clayey, moderate brownto light brown, sub-angular torounded, poorly sorted quartz.SAND: silty, moderate brown tolight brown, fine grained tocoarse grained, poorly sortedquartz.SAND: clayey, moderate brownto light brown, fine grained tomedium grained, poorly sortedquartz.CLAY: sandy, moderatereddish brown, firm.CONGLOMERATE: mainly ironcemented sandstone andpisolites, yellow, with minorclay.

CLAYSTONE: white and lightbrown, with pisolites, roundedto sub-rounded, very coarsegrained.

CLAYSTONE: white andbrown, and pisolites. Pisolitessub-rounded to rounded,getting smaller with depth.WEATHERED VOLCANICS:dark grey and CLAY: yellowishbrown.


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RN17591

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Depth (m) Description 0 3 SAND: dark reddish brown (10R 3/6), fine grained to coarse grained, sub-

angular to rounded, poorly sorted quartz. 3 6 CLAYSTONE: sandy, mottled white (N9) and light brown (5YR 5/6). Sand

medium grained to very coarse grained , sub-angular to sub-rounded, mainly quartz.

6 9 SAND: clayey, moderate brown (5YR 4/4) to light brown (5YR 6/4), fine grained to medium grained, sub-angular to rounded, poorly sorted quartz.

9 12 SAND: clayey, moderate brown (5YR 4/4) to light brown (5YR 6/4), fine grained to medium grained, sub-angular to rounded, poorly sorted quartz. Minor white (N9) sandstone.

12 15 SAND: silty, light brown (5YR 6/4), fine grained to coarse grained, sub-angular to rounded, poorly sorted quartz.

15 18 SAND: silty, moderate brown (5YR 4/4) to light brown (5YR 6/4), fine grained to coarse grained, sub-angular to rounded, poorly sorted quartz .

18 21 SAND: clayey, moderate brown (5YR 4/4) to light brown (5YR 6/4), fine grained to medium grained, sub-angular to rounded, poorly sorted quartz.

21 24 SAND: clayey, light brown (5YR 5/6), medium grained to coarse grained, sub-angular to rounded, poorly sorted quartz.

24 30 CLAY: sandy, moderate reddish brown (10R 4/6), firm. 30 36 CONGLOMERATE: mainly iron cemented sandstone and pisolites, with

minor clay. 36 39 CONGLOMERATE: mainly iron cemented sandstone and pisolites, with clay.

Gravel yellow colour. 39 42 As above except increase in clay. 42 57 CLAYSTONE: white (N9) and light brown, with pisolites, rounded to sub-

rounded, very coarse grained. 57 63 CLAYSTONE: white (N9) and brown, and pisolites. Pisolites sub-rounded to

rounded, getting smaller with depth. 63 79.56 WEATHERED VOLCANICS: dark grey and CLAY: yellowish brown. Colours described from wet samples. TD 79.56 metres SUMMARY 0 - 3 metres Quaternary 3 - 39 metres Tertiary 39 – 79.56 metres Kurinelli Sandstone?? R. J. Paul Hydrogeologist, Alice Springs 15/10/2001


200 mm dia.hole.

100 mm Class 12PVC.


Bottom Cap.Fallback.

TD 73.37m

03/08/2001SWL 13.6m

Q = 0.5 l/sTDS = 1002 mg/l

Q = 5 l/sTDS = 798 mg/l

Q = 20 l/sTDS = 676 mg/l

SAND: silty, moderate reddishorange to moderate red, finegrained to medium grained,moderately sorted quartz,minor iron cemented patches.CLAY: sandy and gravelly,yellowish brown and minorclay, sandy, white. Gravelmainly sandstone fragments.CLAY: sandy, light brown tomoderate yellowish brown, withminor sandstone fragments.

SANDSTONE: cemented,mottled white and very lightgrey and moderate yellow andmoderate red. Very harddrilling.

SANDSTONE: white and lightgrey, with minor mottling lightbrown and moderate reddishorange, fine grained to mediumgrained, getting coarser withdepth. Minor porosity. Minorsiltstone layers.SANDSTONE: white and lightbrown, fine grained to coarsegrained, poorly sorted quartz.SANDSTONE: slightly clayey,silty, moderate reddish brown,fine grained to coarse grained,angular to rounded, mainlyquartz. Sandstone gettingferruginous in last metre.SANDSTONE: slightly clayey,silty, moderate reddish brown,fine grained to coarse grained,angular to rounded, mainlyquartz. Also Sandstonemoderate reddish brown finegrained to medium grained,some porosity.CLONGLOMERATE: pale red,sub-angular to sub-rounded,mainly quartz and sandstone.


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RN17592

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0 3 SAND: silty, moderate reddish orange (10R 4/6), fine grained to medium grained, sub-rounded to rounded, moderately sorted quartz.

3 6 SAND: silty, slightly clayey, moderate red (5R 4/6), fine grained to coarse grained, sub-angular to rounded, moderately sorted quartz with minor iron cemented patches.

6 9 CLAY: sandy and gravelly, yellowish brown (10YR 6/4) and minor clay, sandy, white (N9). Gravel mainly sandstone fragments.

9 15 CLAY: sandy, light brown (10YR 6/4), with minor sandstone fragments. 15 21 CLAY: sandy, moderate yellowish brown (YR 5/4), with minor sandstone and

calc arenite. 21 24 CLAY: sandy, light brown (5YR 5/4), with minor sandstone and calc arenite. 24 33 SANDSTONE: cemented, mottled white (N9) and very light grey (N8) and

moderate yellow (5Y 5/5) and moderate red (5R 5/5). Very hard drilling. 33 42 SANDSTONE: cemented, mottled white (N9) and very light grey (N8) and

moderate yellow (5Y 5/5) and moderate red (5R 5/5) going into SANDSTONE: white (N9), fine grained, rounded, well sorted quartz.

42 48 SANDSTONE: white (N9) and light grey (N8), with minor mottling light brown (5YR 6/4) and moderate reddish orange (10R 6/6), fine grained to medium grained, getting coarser with depth. Minor porosity. Minor siltstone layers.

48 54 SANDSTONE: white (N9) and light brown (5YR 6/4), fine grained to coarse grained, poorly sorted quartz.

54 57 SANDSTONE: slightly clayey, mottled white (N9) and light brown (5YR 6/4), fine grained to medium grained, moderately sorted quartz.

57 60 SANDSTONE: slightly clayey, silty, moderate reddish brown (10R 4/6), fine grained to coarse grained, angular to rounded, mainly quartz. Sandstone getting ferruginous in last metre.

60 63 SANDSTONE: slightly clayey, silty, moderate reddish brown (10R 4/6), fine grained to coarse grained, angular to rounded, mainly quartz. Also Sandstone moderate reddish brown (10R 4/6) fine grained to medium grained, some porosity.

63 73.37 CLONGLOMERATE: pale red (10R 6/2), sub-angular to sub-rounded, mainly quartz and sandstone.

Colours described from wet samples. TD 73.37 metres SUMMARY 0 - 6 metres Quaternary 6 - 24 metres Tertiary 24 – 63 metres Taragan? Sandstone 63 – 73.37 metres Kurinelli? Sandstone R. J. Paul Hydrogeologist, Alice Springs

07/12/2001


200 mm dia.hole.

152 mm ID steelcasing.

Open Hole.

TD 90.84m

03/08/2001SWL 9.05m

Q = 0.42 l/sTDS = 437 mg/l

Q = 5 l/sTDS = 472 mg/lQ = 0.5 l/sTDS = 706 mg/l

Q = 8.3 l/sTDS = 941 mg/l

SAND: silty, dark reddishbrown, fine grained to coarsegrained, sub-angular tosub-rounded, poorly sortedquartz with fragments ofsandstone.SAND: silty, slightly clayey,light brown to moderate brown,fine grained to coarse grained,sub-angular to sub-rounded,poorly sorted quartz with minoriron cemented patches andsandstone fragments.CLAY: sandy, light brown.Sand fine grained to mediumgrained, sub-rounded torounded, poorly sorted quartz.CLAY: sandy, light brown andyellowish grey. Sand finegrained to coarse grained,sub-angular to sub-rounded,poorly sorted quartz with ironcemented patches andsandstone fragments, coarsegrained to very coarse grained.SAND: clayey, reddish brownand CLAY, sandy, light grey.LIMESTONE: light brownishgrey and CALC ARENITE, verylight grey.LIMESTONE: with minorsandstone and siltstone.SILTSTONE: yellowish greywith minor LIMESTONE.LIMESTONE: grey and CALCARENITE, pale red.SANDSTONE: calcareous,pale reddish brown to darkreddish brown, fine grained tomedium grained, sub-roundedquartz.MUDSTONE: andSILTSTONE: with minor redsandstone.SANDSTONE, pale red togreyish orange pink and minorSILTSTONE, light grey.LIMESTONE: massive, grey todark grey with minorSANDSTONE, reddish brown.SANDSTONE: pinkish greyand minor SANDSTONE, lightbrown and SILTSTONE,reddish brown andLIMESTONE: massive, grey todark grey.SANDSTONE: greyish yellow,fine grained and LIMESTONE,dark grey.SANDSTONE: greyish yellowand pale yellowish brown, finegrained going into a pebblebed, with pebbles of sandstoneand conglomerate andLIMESTONE, dark grey.LIMESTONE: dark grey goinginto SANDSTONE, white, finegrained, sub-rounded torounded, well sorted quartz.


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0 3 SAND: silty, dark reddish brown (10R 3/6), fine grained to coarse grained, sub-angular to sub-rounded, poorly sorted quartz with fragments of sandstone.







30 36 CLAY: sandy, mottled light brown (5YR 7/4) and yellowish grey (5YR 6/2). Sand fine grained to coarse grained, sub-angular to sub-rounded, poorly sorted quartz with iron cemented patches and sandstone fragments, coarse grained to very coarse grained.

36 42 SAND: clayey, reddish brown (10R 4/4) and CLAY, sandy, light grey (N7). 42 45 LIMESTONE: light brownish grey (5YR 7/1) and CALC ARENITE, very

light grey(N8). 45 51 LIMESTONE: with minor sandstone and siltstone. 51 54 SILTSTONE: yellowish grey (5Y 7/4) with minor LIMESTONE. 54 57 LIMESTONE: grey (N5) and CALC ARENITE, pale red (10R 7/2). 57 60 SANDSTONE: calcareous, pale reddish brown (10R 5/4) to dark reddish

brown (10R 3/4), fine grained to medium grained, sub-rounded quartz. 60 65 MUDSTONE: and SILTSTONE: with minor red sandstone. 65 69 SANDSTONE, pale red (10R 6/2) to greyish orange pink (5YR 7/1) and minor

SILTSTONE, light grey (N7). 69 72 LIMESTONE: massive, grey (N5) to dark grey (N3) with minor

SANDSTONE, reddish brown (10R 4/4). 72 75 SANDSTONE: pinkish grey (5YR 8/1) and minor SANDSTONE, light brown

(5YR 6/4) and SILTSTONE, reddish brown (10R 4/4). 75 78 SANDSTONE: pinkish grey (5YR 8/1) and minor SANDSTONE, light brown

(5YR 6/4) and SILTSTONE, reddish brown (10R 4/4) and LIMESTONE: massive, grey (N5) to dark grey (N3).

78 81 SANDSTONE: greyish yellow (5Y 7/4), fine grained and LIMESTONE, dark grey (N3).

81 84 SANDSTONE: greyish yellow (5Y 7/4) and pale yellowish brown (10YR 6/2), fine grained quartz.

84 87 SANDSTONE: greyish yellow (5Y 7/4) and pale yellowish brown (10YR 6/2), fine grained going into a pebble bed, with pebbles of sandstone and conglomerate and LIMESTONE, dark grey (N3).

87 90.84 LIMESTONE: dark grey (N3) going into SANDSTONE, white (N9), fine grained, sub-rounded to rounded, well sorted quartz.

Colours described from wet samples. TD 90.84 metres SUMMARY 0 - 3 metres Quaternary 3 - 35 metres Tertiary 96 – 90.84 metres ?? Formation R. J. Paul Hydrogeologist, Alice Springs 15/10/2001


200 mm dia.hole.

100 mm Class 12PVC.


Bottom Cap.Fallback. TD 37.3m

03/08/2001SWL 8.42m

Q = 0.3 l/sTDS = 491 mg/l

SAND: silty, dark reddishbrown, fine grained to coarsegrained, poorly sorted quartz.SAND: silty, slightly clayey,light brown, fine grained tocoarse grained, poorly sortedquartz with minor ironcemented patches andsandstone fragments.SAND: silty, slightly clayey toclayey, moderate brown, finegrained to coarse grained,sub-angular to sub-rounded,poorly sorted quartz with minoriron cemented patches andsandstone fragments.CLAY: sandy, light brown.Sand fine grained to mediumgrained, sub-rounded torounded, poorly sorted quartz.CLAY: sandy, light brown.Sand fine grained to coarsegrained, poorly sorted quartzwith iron cemented patchesand sandstone fragments,coarse grained to very coarsegrained.CLAY: sandy, mottled lightbrown and yellowish grey.Sand fine grained to coarsegrained, sub-angular tosub-rounded, poorly sortedquartz with iron cementedpatches and sandstonefragments, coarse grained tovery coarse grained.


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RN17594

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DATE(S) DRILLED 31/07-01/08/2001

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0 3 SAND: silty, dark reddish brown (10R 3/6), fine grained to coarse grained, sub-angular to sub-rounded, poorly sorted quartz with fragments of sandstone.







30 37.7 CLAY: sandy, mottled light brown (5YR 7/4) and yellowish grey (5YR 6/2). Sand fine grained to coarse grained, sub-angular to sub-rounded, poorly sorted quartz with iron cemented patches and sandstone fragments, coarse grained to very coarse grained.

Colours described from wet samples. TD 37.30 metres SUMMARY 0 - 3 metres Quaternary 3 – 37.3 metres Tertiary R. J. Paul Hydrogeologist, Alice Springs 15/10/2001

254 mm dia.hole.203 mm ID steelcasing,cemented.

200 mm dia.hole.

100 mm Class 12PVC.

100 mm Class 12Slotted PVC.

End Cap.Fallback. TD 92.37m

03/08/2001SWL 7.01m

Q = 0.25 l/sTDS = 854 mg/l

Q = 4 l/sTDS = 743 mg/l

Q = 8 l/sTDS = 891 mg/l

SAND: silty, reddish orange,fine grained to coarse grained,sub-rounded to rounded,poorly sorted quartz.CALCRETE: then light brown,silty sand, fine grained tocoarse grained, sub-rounded torounded, poorly sorted quartz.SAND: silty, light brown, finegrained to coarse grained,sub-rounded to rounded,poorly sorted quartz. Minorgravel.SAND: clayey, light brown,coarse grained quartz andgravel up to 5 mm.CLAY: sandy and gravelly,greyish orange, with some ironcementing.CLAYSTONE: sandy, greyishorange and white, and graveland minor reddish brownsandstone.

LIMESTONE: white, massivegoing into SANDSTONE:greyish orange, fine grained,sub-rounded to rounded, wellsorted quartz.OOIDS: white, thenCLAYSTONE: moderate yellowand SILTSTONE: dark greyishred.LIMESTONE: greyish orangeand yellowish grey, laminated.SILTSTONE: dusky yellow tolight olive, going intoLIMESTONE: yellowish grey,massive, going back intoSILTSTONE:LIMESTONE: greyish orangeand yellowish grey, laminated.MUDSTONE: dark grey,SANDSTONE: light brown andLIMESTONE: yellowish grey,interbedded.LIMESTONE: yellowish grey,sandy.MUDSTONE: dark grey, theninto LIMESTONE: yellowishgrey.LIMESTONE: light greyishbrown, sandy, becoming darkgrey to grey.LIMESTONE: light brown,sandy, becoming dark grey.MUDSTONE: dark grey,LIMESTONE: dark grey andSANDSTONE: light orangepink, interbedded.LIMESTONE: dark grey.CALC ARENITE, light greygoing into LIMESTONE: darkgrey going into CALCARENITE: greyish red.LIMESTONE: dark grey.CALC ARENITE: light browngoing into LIMESTONE: grey,back into CALC ARENITE:light brown then bask intoLIMESTONE: dark grey.


INFLOWS

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RN17595

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0 3 SAND: silty, reddish orange (10R 5/6), fine grained to coarse grained, sub-rounded to rounded, poorly sorted quartz.

3 6 CALCRETE: then light brown (5YR 5/6), silty sand, fine grained to coarse grained, sub-rounded to rounded, poorly sorted quartz.

6 9 SAND: silty, light brown (5YR 5/6), fine grained to coarse grained, sub-rounded to rounded, poorly sorted quartz.

9 12 SAND: silty, light brown (5YR 4/6), fine grained to coarse grained, sub-rounded to rounded, poorly sorted quartz and gravel.

12 15 SAND: silty, light brown (5YR 5/6), fine grained to coarse grained, sub-rounded to rounded, poorly sorted quartz.

15 18 SAND: clayey, light brown (5YR 5/4), coarse grained quartz and gravel up to 5 mm.

18 30 CLAY: sandy and gravelly, greyish orange (10YR 7/4), with some iron cementing.

30 33 CLAYSTONE: sandy, greyish orange (10YR 7/4), and gravel and minor reddish brown (10R 5/6) sandstone.

33 36 CLAYSTONE: sandy, greyish orange (10YR 7/4), and gravel (up to 10 mm)and minor reddish brown (10R 5/6) sandstone and reddish brown (10R 5/6) sand, clayey.

36 39 CLAYSTONE: sandy, white (N9), and SAND: clayey, (10R 5/6) with minor pisolites.

39 42 LIMESTONE: white (N9), massive. 42 45 LIMESTONE: white (N9), massive going into SANDSTONE: greyish orange

(10YR 7/4), fine grained, sub-rounded to rounded, well sorted quartz. 45 48 OOIDS: white (N9), then CLAYSTONE: moderate yellow (5Y 7/4) and

SILTSTONE: dark greyish red (10R 3/2). 48 51 LIMESTONE: greyish orange (10YR 7/3) and yellowish grey (5Y 7/2),

laminated. 51 54 SILTSTONE: dusky yellow (5Y 6/4) to light olive (10Y 6/4), going into

LIMESTONE: yellowish grey (5Y 6/2), massive, going back into SILTSTONE:

54 57 LIMESTONE: greyish orange (10YR 7/3) and yellowish grey (5Y 7/2), laminated.

57 60 MUDSTONE: dark grey, then SANDSTONE: light brown then LIMESTONE: yellowish grey (5Y 6/2) becoming dark grey (N3).

60 63 LIMESTONE: yellowish grey (5Y 6/2), sandy, becoming dark grey. 63 66 MUDSTONE: dark grey, then into LIMESTONE: yellowish grey (5Y 6/2). 66 69 LIMESTONE: light greyish brown (5YR 7/1), sandy, becoming dark grey to

grey. 69 71 LIMESTONE: light brown (5YR 5/3), sandy, becoming dark grey. 71 74 MUDSTONE: dark grey, going into LIMESTONE: dark grey, going into

SANDSTONE: light orange pink (10R 7/2), going into LIMESTONE: grey going into SANDSTONE: light orange pink (10R 7/2).

74 77 LIMESTONE: dark grey. 77 80 CALC ARENITE, light grey going into LIMESTONE: dark grey going into

CALC ARENITE: greyish red (10R 4/3). 80 84 LIMESTONE: dark grey. 84 92.37 CALC ARENITE: light brown going into LIMESTONE: grey, back into

CALC ARENITE: light brown then bask into LIMESTONE: dark grey. Colours described from wet samples. TD 92.37 metres SUMMARY 0 - 3 metres Quaternary 3 - 35 metres Tertiary 35 – 92.37 metres Arrinthrunga Formation R. J. Paul Hydrogeologist, Alice Springs 15/10/2001

APPENDIX C

FIELD AND LABORATORY ELECTRICAL CONDUCTIVITIES

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LegendField ECLab EC

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APPENDIX D

NORTHERN TERRITORY ENVIRONMENTAL LABORATORIES HEAVY METAL ANALYSIS – RN17593

APPENDIX E

CSIRO LABORATORIES ISOTOPE ANALYSIS – RN17593

APPENDIX F

INVESTIGATION BORE GEOPHYSICAL RESULTS

warrabri - murray downs 2001 b · investigation bores were drilled on murray downs during this...

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