mount polley mining corporation technical report on multi

MOUNT POLLEY MINING CORPORATION

TECHNICAL REPORT ON

MULTI-ELECTRODE RESISTIVITY AND

SEISMIC REFRACTION SURVEYS

MOUNT POLLEY TAILINGS DAM PROJECT

LIKELY, B.C.

by

Claudia Krumbiegel, M.Sc.

Cliff Candy, P.Geo.

PROJECT FGI-1370October, 2014________________________________________________________________

Frontier Geosciences Inc. 237 St. Georges Avenue, North Vancouver, B.C., Canada V7L 4T4Tel: 604.987.3037 Fax: 604.984.3074

CONTENTS

74. LIMITATIONS

6 3.3 Data Processing method6 3.2 Survey Procedure6 3.1 Equipment63. THE SEISMIC REFRACTION SURVEY METHOD

5 2.3 Data Processing4 2.2 Survey Procedure 3 2.1 Equipment 32. THE MULTI-ELECTRODE RESISTIVITY SURVEY

11. INTRODUCTIONpage

(i)

Frontier Geosciences Inc.

ILLUSTRATIONS

AppendixSeismic Refraction Profile SL-8Figure 24AppendixSeismic Refraction Profile SL-6Figure 23AppendixSeismic Refraction Profile SL-5Figure 22AppendixSeismic Refraction Profile SL-3Figure 21AppendixSeismic Refraction Profile SL-2Figure 20AppendixSeismic Refraction Profile SL-1Figure 19AppendixInverted Chargeability Profile RL-8Figure 18AppendixInverted Chargeability Profile RL-7Figure 17AppendixInverted Chargeability Profile RL-6Figure 16AppendixInverted Chargeability Profile RL-5Figure 15AppendixInverted Chargeability Profile RL-4Figure 14AppendixInverted Chargeability Profile RL-3Figure 13AppendixInverted Chargeability Profile RL-2Figure 12AppendixInverted Chargeability Profile RL-1Figure 11AppendixInverted Resistivity Profile RL-8Figure 10AppendixInverted Resistivity Profile RL-7Figure 9AppendixInverted Resistivity Profile RL-6Figure 8AppendixInverted Resistivity Profile RL-5Figure 7AppendixInverted Resistivity Profile RL-4Figure 6AppendixInverted Resistivity Profile RL-3Figure 5AppendixInverted Resistivity Profile RL-2Figure 4AppendixInverted Resistivity Profile RL-1Figure 3AppendixSite PlanFigure 2

Page 2Survey Location PlanFigure 1location

(ii)


1. INTRODUCTION

In the periods September 16 to 19 and September 22 to 25, 2015 Frontier Geosciences Inc.carried out a resistivity imaging investigation for Mount Polley Mining Corporation at theMount Polley Mine Site. This work was undertaken together with a program of seismicrefraction investigations, in the periods October 3 to 5 and October 11 to 13, 2014. ASurvey Location Plan of the area is shown at a scale of 1:250,000 in Figure 1.

The purpose of the survey was to assist in determining geological conditions in closeproximity to the Mount Polley Tailings Pond Breach which occurred on August 4, 2014. Thesite area is located approximately 11 kilometres south of Likely, B.C. A detailed Site Plan ofthe area is illustrated at 1:2,500 scale in Figure 2, in the Appendix. A grid of eight resistivitylines was surveyed extending north and west to east of the breach. Additionally, six seismicrefraction lines, partially overlapping the resistivity, were carried out.

A total of approximately 3.0 kilometres of multi-electrode resistivity imaging and1.9 kilometres of seismic refraction surveying on sixteen separate seismic spreads wasconducted.

1


2

FIG. 1SCALE 1:250,000DATE: OCT. 2014

FRONTIER GEOSCIENCES INC.

SURVEY LOCATION PLAN

GEOPHYSICAL SURVEY

MOUNT POLLEY TAILINGS DAM PROJECTMOUNT POLLEY MINING CORPORATION

KILOMETRES

570000E 575000E 580000E 585000E 590000E 595000E 600000E 605000E5795000N

5800000N

5805000N

5810000N

5815000N

5820000N

5825000N

5830000N

5835000N

5840000N

0 2.5 5 7.5 10

SURVEY AREA

2. THE MULTI-ELECTRODE RESISTIVITY SURVEY

2.1 Equipment

The purpose of electrical surveying is to determine the subsurface resistivity distribution bymaking detailed measurements along survey lines laid out on the ground surface. From thesemeasurements, the true resistivity of the subsurface can be estimated. Ground resistivity isrelated to various geological parameters such as the sulphide, clay mineral and fluid content,porosity and degree of water saturation in weathered material layering and the underlyingmaterials.

The surface multi-electrode imaging resistivity/IP survey was carried out using the FrontierGeosciences Inc. Resistivity/IP system. The instrument has eight receiver channels, allowingmeasurements on multiple electrodes to proceed simultaneously, which significantly speedsup the data collection process allowing dense and detailed resistivity and IP profiles to beobtained.

During multi-electrode surveying, a central switching system is used to address the array ofelectrodes. This switching is accomplished using a multiplexer that directs the signals fromany of the field electrodes to the eight input channels of the receiver. Similarly, a system ofhigh voltage relays in the central switching system allows the transmitter to utilise any pair ofelectrodes for current injection. By means of a command file programmed in the receiver,electrode arrays including Schlumberger, Wenner, dipole-dipole, pole-dipole and pole-pole,or multiple combinations of arrays, may be chosen for execution by the system.

The high resolution, full waveform receiver records the entire waveform for eight channelssimultaneously. With the full 24 bit waveform available for processing, self-potential drift,transient effects, and several other noise sources are accurately identified and removed fromthe signal. This results in full waveform data acquisition, providing high resolutioninformation in lower signal level situations such as higher current electrode spacings andcorresponding deeper penetration in a dipole-dipole survey, or in geologic settings withunfavourable signal-to-noise levels.

3


In addition to resistivity measurements, Induced Polarisation readings were collectedsimultaneously. This measurement records the degree to which the earth materials tend toretain an apparent voltage after removal of the transmitted voltage. The effect is termedInduced Polarisation (IP) and has its origins in the electrolytic nature of groundwater and theconductive nature of certain minerals. The system measures the IP effect in the time domainby determining the residual decay voltage after the current is switched off. The time domainunit of measurement of chargeability is milliseconds. The IP effect is caused by two differentmechanisms: membrane and electrode polarisation effects. The membrane polarisation effectis usually created by clay minerals present in the earth. The electrode polarisation effect islargely caused by conductive materials such as sulphides in the rock and (usually) to a lesserextent by graphite. This effect is the basis for application of the IP method in surveys for thedetection of metallic minerals, such as disseminated sulphides.

2.2 Survey Procedure

Cable layouts for each system were identical, consisting of six 70-metre receiver cables laidout along the survey line and connected to the multiplexing switchbox controller. Theswitchbox controller allows the electrodes to be in either standby, current or measuringpotential modes. Each individual cable consists of 14 electrode takeouts at a spacing of5 metres, with a full array covering approximately 420 metres.

The system was configured to permit two different data acquisition procedures. The firstprocedure, typically the initial array of a new line, collects data files encompassing the fullsequence of measurements. After the full array reading, three cables were detached from thefront of the receiver line, and three cables were attached to the front of the receiver line,effectively shifting the array 210 metres along the survey line by ‘rolling’ the array. Thecomputer system was shifted to the same relative position within the rolled array, and theprocess repeated. Data quality was monitored in the field through a full-panel display ofreceived waveforms. If the data was suspect, individual channels could be displayed atenhanced scale for closer inspection and field processing.

4


2.3 Data Processing

The data were downloaded from the instruments and converted into the input file format forthe cell-based inversion method developed by M. H. Loke and referred to as the RES2DINVprogram. This software utilises a finite difference modelling approach to calculate theresistivity values that best fit the observed data. The model parameters are the resistivityvalues of the model cell, while the data is the measured apparent resistivity and apparentInduced Polarisation values. The mathematical link between the model parameters and themodel response is provided by the finite-difference or finite-element methods. In alloptimisation methods, an initial model is modified in an iterative manner so that thedifference between the model response and the data values is reduced.

To increase the accuracy of the modelling process, the elevation of each electrode wasincorporated into the input data file.

5


3. THE SEISMIC REFRACTION SURVEY METHOD

3.1 Equipment

The seismic refraction investigation was carried out using a Geometrics, Geode, 24 channel,signal enhancement seismograph and Oyo Geo Space, 10 Hz geophones. Geophone intervalsalong the multicored seismic cables were maintained at 5 metres in order to produce highresolution data on subsurface layering and the basal bedrock surface. Electrical blasting capsin the small explosive charges used for energy input were detonated with a high voltage,capacitor type blaster.

3.2 Survey Procedure

For each spread, the seismic cable was stretched out in a straight line and the geophonesimplanted. Six separate ‘shots’ were then initiated: one at either end of the geophone array,two at intermediate locations along the seismic cable, and one off each end of the line toensure adequate coverage of the basal layer. The shots were detonated individually andarrival times for each geophone were recorded digitally in the seismograph. Data recordedduring field surveying operations was generally of good to excellent quality.

Throughout the survey, notes were recorded regarding seismic line positions in relation totopographic and geological features, and survey stations in the area. Relative elevations onthe seismic lines were recorded by chain and inclinometer with absolute elevations providedby Mount Polley Mine Corporation.

3.3 Data Processing Method

The seismic profiles were prepared using the method of differences technique. This methodutilises the time taken to travel to a geophone from shotpoints located to either side of thegeophone. Using the total time, a small vertical time is computed which represents the timetaken to travel from the refractor up to the ground surface. This time is then multiplied bythe velocity of each overburden layer to obtain the thickness of each layer at that point.

6


4. LIMITATIONS

The multi-electrode resistivity / IP method results in repeatable measurements of thegeoelectric section. The methods are successful providing adequate contrasts exist in thesubsurface in electrical resistivity and chargeability between distinct geologicalmaterials. Conductors identified in resistivity surveying are diverse and depending ongeological settings, may include mineralisation, graphite, argillite, shear or fault zones, claybeds, marl, saturated materials, clay shale, clay till, mineralised leachate and zones of saltwater intrusion. Electrically resistive materials include but are not limited to sand and gravel,dry soils, glacial moraine, coarse glacial till, permafrost, underground voids and competentbedrock. Also affecting resistivity are the degree of saturation of materials and the porosity,the concentration of dissolved electrolytes, the temperature and the amount and compositionof colloids. With few exceptions, no unique resistivity value defines a specific geologicalmaterial.

Sources of IP response include almost all the sulphides, oxides such as magnetite, graphiteand clay materials. Penetration depths may be affected by the presence of highly conductivesurficial materials that may partially mask deeper geological layering. In addition, theresolution of the resistivity and IP methods decreases exponentially with depth. Given thediffuse nature of the methods, resolution is inherently poorer at depth. The survey results canalso be influenced by electrode coupling, presence of noise such as SP, capacitive coupling,electromagnetic coupling and the presence of power lines.

In the modelling process, a number of limitations constrain modelling of subsurfaceresistivity and chargeability. For instance, due to non-uniqueness, more than one model canproduce the same response that agrees with the observed data. The resulting model thusdepends to a significant extent on the constraints used and will closely approximate the truesubsurface conditions only if the constraints closely correspond to actual subsurfaceconditions.

7


930

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SH14-01

SH14-02A

SH14-03

SH14-04

SH14-05ASH14-06

SH14-07

SH14-08 SH14-08A

SH14-09

SH14-10

SH14-11SH14-11B

SH14-12

SH14-13

SH14-14

SH14-15

SH14-16

SH14-17

SH14-18

SH14-19

SH14-20

SH14-21

SH14-22 SH14-22A

594600E 594650E 594700E 594750E 594800E 594850E 594900E 594950E 595000E 595050E 595100E 595150E 595200E 595250E 595300E 595350E 595400E 595450E 595500E5819700N

5819750N

5819800N

5819850N

5819900N

5819950N

5820000N

5820050N

5820100N

5820150N

5820200N



SITE PLAN

GEOPHYSICAL SURVEY


RL-4

RL-5RL

-8

RL-6

RL-2

RL-3

RL-7RL-1

0 25 50 75 100

METRES

100RESISTIVITY LINE AND STATION

SEISMIC REFRACTION LINE

BOREHOLESH14-01

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RL-4

RL-5RL-8RL-6

SH14-14

SH14-04(14.1m OFF)

SH14-09(6.4m OFF)

SH14-08 SH14-08A

NRRF

NRRFNRRFNRRFNRRFNRRFNR

RF

UGTUGLU

UGTNR

MGT

UGFNR

LGT

WB (sed)

NRTL and RFNR TL

UGT

MGTLGLUUGFLGFLGT

WB (sed)

NRRFNRRF

UGT

UGLUMGTLGLUUGFLGF

LGT

WB (sed)

NRRFNR

RFRF/GTNRRF/GTNRRF

UGT

UGT/UGLU

MGT

LGLUUGF

WB (sed)

NR

UGTMGT

0SE 20SE 40SE 60SE 80SE 100SE 120SE 140SE 160SE 180SE 200SEDISTANCE (m)

RESISTIVITY PROFILE

880

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920

940

960

ELE

VA

TIO

N (m

)



RL-1 INVERTEDRESISTIVITY PROFILE

RESISTIVITY/CHARGEABILITY SURVEY


RESISTIVITY (ohm-m)

0.0 16.2 29.8 46.1 60.0 76.0 92.3 120.6 176.3 300.0 539.1 800.0

METRES

0 10 20 30 40

FIRST INTERMEDIATE SURFACE

SECOND INTERMEDIATE SURFACE

BEDROCK SURFACE

SEISMIC REFRACTION INTERPRETATION

NRRFOLTLGTUGTUGLUMGTLGLUUGFLGFLGTWB (sed)WB (Mafic)WB (Vol)

No RecoveryRockfillOrganicsTailingsGlacial TillUpper Glacial TillUpper GlaciolacustrineMiddle Glacial TillLower GlaciolacustrineUpper GlaciofluvialLower GlaciofluvialLower Glacial TillWeathered Bedrock (Sedimentary)Weathered Bedrock (Mafic)Weathered Bedrock (Volcanics)

SONIC DRILLING SIMPLIFIED LOG

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2020

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NRTLNRTL Till core TL and RF

UGT

NRUGF

LGF

LGTNR

LGT

WB (sed)

WB (Vol)

NR RFTL

UGT

MGTLGLU

NRLGLULGFLGT

WB (sed)

WB (Vol)

NRTL and RFTL

UGT

UGLUMGTLGLU

UGF

WB (sed)

RF

UGT

UGLU UGTUGLU

MGT

LGLU

UGF

WB (sed)

WB (Mafic)

NRRF

NRRF

NRRF

RF/UGT

UGT

UGLUUGTMGT

LGLULGFNR LGFLGT

WB (sed)

RFNRRFUGT

NR

MGTUGFLGFLGT

WB (Mafic)

NR

UGT

MGT

LGTWB (Mafic)

NRRF

UGT

LGLUUGFNRUGF

LGF

LGT

SH14-19(22.2 OFF)

SH14-18(4.1 OFF)

SH14-16(5.7 OFF)

SH14-15SH14-03

SH14-06(5.7 OFF)

SH14-01 SH14-12SH14-13(8.6 OFF)

0SE 20SE 40SE 60SE 80SE 100SE 120SE 140SE 160SE 180SE 200SE 220SE 240SE 260SE 280SE 300SE 320SE 340SE 360SE 380SE 400SE 420SE 440SE 460SE 480SE 500SE 520SE 540SE 560SE 580SE 600SE 620SE 640SE 660SE 680SE 700SE 720SE 740SE 760SE 780SE 800SE 820SEDISTANCE (m)

RESISTIVITY PROFILE

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TIO

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)






RESISTIVITY (ohm-m)

0.0 16.2 29.8 46.1 60.0 76.0 92.3 120.6 176.3 300.0 539.1 800.0

METRES

0 10 20 30 40



BEDROCK SURFACE





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RL-8RL-6

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SH14-22 SH14-22ASH14-10

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MGT

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WB (Mafic)

NRRF TL

UGT

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NR

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LGLU

UGF

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NRRFNR RFTL

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UGLUMGTLGLU

LGT

WB (Vol)

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RESISTIVITY PROFILE

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LEV

ATI

ON

(m)






RESISTIVITY (ohm-m)

0.0 16.2 29.8 46.1 60.0 76.0 92.3 120.6 176.3 300.0 539.1 800.0

METRES

0 10 20 30 40



BEDROCK SURFACE





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RL-3

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NRRFNRRF

UGTUGLU

UGTNR

MGT

UGFNR

LGT

WB (sed)

NRRF

NRRF

NRRFRF/UGT

UGT

UGLUUGT

MGTLGLU

LGFNRLGFLGT

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NRUGTNR

UGT

UGLUUGTMGTLGLULGFLGT/WB (Mafic)

WB (Mafic)

RFNRRF NROL

UGT

UGLUUGT UGLUMGTLGFLGT

WB (Mafic)

SH14-08

(4.6m OFF)

SH14-06 SH14-05A(8.3m OFF)

SH14-02A

0NE 20NE 40NE 60NE 80NE 100NE 120NE 140NE 160NE 180NE 200NE 220NE 240NE 260NE 280NE 300NE 320NEDISTANCE (m)

RESISTIVITY PROFILE

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ATI

ON

(m)






RESISTIVITY (ohm-m)

0.0 16.2 29.8 46.1 60.0 76.0 92.3 120.6 176.3 300.0 539.1 800.0

METRES

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RFOL

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MGTUGFLGT

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SH14-11B SH14-11


RESISTIVITY PROFILE

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ATI

ON

(m)






RESISTIVITY (ohm-m)

0.0 16.2 29.8 46.1 60.0 76.0 92.3 120.6 176.3 300.0 539.1 800.0

METRES

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BEDROCK SURFACE





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LGFLGT

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SH14-16 SH14-17


RESISTIVITY PROFILE

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ATI

ON

(m)






RESISTIVITY (ohm-m)

0.0 16.2 29.8 46.1 60.0 76.0 92.3 120.6 176.3 300.0 539.1 800.0

METRES

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BEDROCK SURFACE





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UGLUUGTMGTLGLU

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WB (Mafic)WB (Mafic)

SH14-05A


RESISTIVITY PROFILE

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960E

LEV

ATI

ON

(m)






RESISTIVITY (ohm-m)

0.0 16.2 29.8 46.1 60.0 76.0 92.3 120.6 176.3 300.0 539.1 800.0

METRES

0 10 20 30 40




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NR

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(5.9 OFF)SH14-15 SH14-22A


RESISTIVITY PROFILE

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LEV

ATI

ON

(m)






RESISTIVITY (ohm-m)

0.0 16.2 29.8 46.1 60.0 76.0 92.3 120.6 176.3 300.0 539.1 800.0

METRES

0 10 20 30 40



BEDROCK SURFACE





30

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6090

RL-4

RL-5RL-8RL-6

SH14-14

SH14-04(14.1m OFF)

SH14-09(6.4m OFF)

SH14-08 SH14-08A

NRRF


RF

UGTUGLU

UGTNR

MGT

UGFNR

LGT

WB (sed)

NRTL and RFNR TL

UGT

MGTLGLUUGFLGFLGT

WB (sed)

NRRFNRRF

UGT

UGLUMGTLGLUUGFLGF

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RFRF/GTNRRF/GTNRRF

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UGTMGT


CHARGEABILITY PROFILE

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RL-1 INVERTEDCHARGEABILITY PROFILE



CHARGEABILITY (msec)

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METRES

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BEDROCK SURFACE





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LGTNR

LGT

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UGT

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NRLGLULGFLGT

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UGF

WB (sed)

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UGLU UGTUGLU

MGT

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WB (sed)

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NRRF

NRRF

NRRF

RF/UGT

UGT

UGLUUGTMGT

LGLULGFNR LGFLGT

WB (sed)

RFNRRFUGT

NR

MGTUGFLGFLGT

WB (Mafic)

NR

UGT

MGT

LGTWB (Mafic)

NRRF

UGT

LGLUUGFNRUGF

LGF

LGT

SH14-19(22.2 OFF)

SH14-18(4.1 OFF)

SH14-16(5.7 OFF)

SH14-15SH14-03

SH14-06(5.7 OFF)

SH14-01 SH14-12SH14-13(8.6 OFF)



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0.0 12.2 24.5 35.8 49.2 61.3 78.2 102.2 210.0

METRES

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BEDROCK SURFACE





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LGLUUGFNR

WB (Mafic)

NRRF TL

UGT

NR

NR

UGT

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LGLU

UGF

WB (Mafic)

NRRFNR RFTL

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UGLUMGTLGLU

LGT

WB (Vol)



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LEV

ATI

ON

(m)







0.0 12.2 24.5 35.8 49.2 61.3 78.2 102.2 210.0

METRES

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BEDROCK SURFACE





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NRRFNRRF

UGTUGLU

UGTNR

MGT

UGFNR

LGT

WB (sed)

NRRF

NRRF

NRRFRF/UGT

UGT

UGLUUGT

MGTLGLU

LGFNRLGFLGT

WB (sed)

NRRFOL NRUGT

NRUGTNR

UGT

UGLUUGTMGTLGLULGFLGT/WB (Mafic)

WB (Mafic)

RFNRRF NROL

UGT

UGLUUGT UGLUMGTLGFLGT

WB (Mafic)

SH14-08

(4.6m OFF)

SH14-06 SH14-05A(8.3m OFF)

SH14-02A



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LEV

ATI

ON

(m)







0.0 12.2 24.5 35.8 49.2 61.3 78.2 102.2 210.0

METRES

0 10 20 30 40




30

30

6060

RL-1 RL-2 RL-7 RL-3

NRRF NRRF

UGT

UGLU MGTLGLUUGFLGF

LGT

WB (sed)

RF

UGT

UGLU UGTUGLU

MGT

LGLUUGF

WB (sed)

WB (Mafic)

NRRF

NRRFTL

UGT

UGLUMGTLGLU

LGT

WB (Vol)

NRRF

RFOL

UGT

MGTUGFLGT

WB (Mafic)

NRRF TLRFOLUGT

NRUGT

MGTUGFLGT

WB (Mafic)

SH14-04 SH14-03 SH14-10

SH14-11B SH14-11



860

880

900

920

940

960E

LEV

ATI

ON

(m)







0.0 12.2 24.5 35.8 49.2 61.3 78.2 102.2 210.0

METRES

0 10 20 30 40



BEDROCK SURFACE





3030

60

6060

90

120

120

RL-1 RL-2 RL-3NR RFTL

UGT

MGTLGLUNRLGLU

LGFLGT

WB (sed)

WB (Vol)

NRRFTLUGTUGLU

MGT

LGLUUGFNR

WB (Mafic)

SH14-16 SH14-17



860

880

900

920

940

960E

LEV

ATI

ON

(m)







0.0 12.2 24.5 35.8 49.2 61.3 78.2 102.2 210.0

METRES

0 10 20 30 40



BEDROCK SURFACE





30

30

3030 60

60

60

60

60

60

90

90

90

90

120

NRRFOLNRUGT

NRUGTNR

UGT

UGLUUGTMGTLGLU

LGFLGT/WB (Mafic)

WB (Mafic)WB (Mafic)

SH14-05ARL-4

RL-5



860

880

900

920

940

960E

LEV

ATI

ON

(m)







0.0 12.2 24.5 35.8 49.2 61.3 78.2 102.2 210.0

METRES

0 10 20 30 40




3030

30

60

60

60

90

90

90

90

120

120

RL-1 RL-2 RL-3NRRFTL

UGT

MGT LGLULGFLGT

WB (Vol.)

NR TL and RFNRTL

UGT

MGTLGLUUGFLGFLGT

WB (sed)

NRTL and RFTL

UGT

UGLUMGT

LGLU

UGF

WB (sed)

NR

UGT

UGLUMGT

LGLU

UGF

WB (Mafic)

SH14-07(8.3 OFF) SH14-14

(5.9 OFF)SH14-15 SH14-22A



860

880

900

920

940

960E

LEV

ATI

ON

(m)







0.0 12.2 24.5 35.8 49.2 61.3 78.2 102.2 210.0

METRES

0 10 20 30 40



BEDROCK SURFACE





SL-5SL-8SL-6

SH14-14

SH14-04(14.1m OFF)

SH14-09(6.4m OFF)

SH14-08 SH14-08A

NRRF


RF

UGTUGLU

UGTNR

MGT

UGFNR

LGT

WB (sed)

NRTL and RFNR TL

UGT

MGTLGLUUGFLGFLGT

WB (sed)

NRRFNRRF

UGT

UGLUMGTLGLUUGFLGF

LGT

WB (sed)

NRRFNR

RFRF/GTNRRF/GTNRRF

UGT

UGT/UGLU

MGT

LGLUUGF

WB (sed)

NR

UGTMGT

360 m/s

850 m/s

1690 m/s

2360 m/s

360 m/s

850 m/s

1750 m/s

2360 m/s


SEISMIC REFRACTION PROFILE

880

900

920

940

960

ELE

VA

TIO

N (m

)



SL-1SEISMIC REFRACTION PROFILE

SEISMIC REFRACTION SURVEY


METRES

0 10 20 30 40



BEDROCK SURFACE





SL-5SL-8SL-6

RFNRRF

GT

LGFGT

WB (vol)


UGT

NRUGF

LGF

LGTNR

LGT

WB (sed)

WB (Vol)

NR RFTL

UGT

MGTLGLU

NRLGLULGFLGT

WB (sed)

WB (Vol)

NRTL and RFTL

UGT

UGLUMGTLGLU

UGF

WB (sed)

RF

UGT

UGLU UGTUGLU

MGT

LGLUUGF

WB (sed)

WB (Mafic)

NRRF

NRRF

NRRF

RF/UGT

UGT

UGLUUGTMGT

LGLULGFNR LGFLGT

WB (sed)

RFNRRFUGT

NR

MGTUGFLGFLGT

WB (Mafic)

NR

UGT

MGT

LGTWB (Mafic)

NRRF

UGT

LGLUUGFNRUGF

LGF

LGT

SH14-19(22.2 OFF)

SH14-18(4.1 OFF)

SH14-16(5.7 OFF)

SH14-15SH14-03

SH14-06(5.7 OFF)

SH14-01 SH14-12SH14-13(8.6 OFF)

340 m/s675 m/s

1860 m/s

3200 m/s

340 m/s

675 m/s

1860 m/s

2170 m/s

330 m/s

615 m/s1570 m/s

3100 m/s

330 m/s615 m/s

1570 m/s

2450 m/s

330 m/s

1665 m/s

2330 m/s

330 m/s

1665 m/s

2120 m/s

370 m/s715 m/s

1665 m/s

2200 m/s

370 m/s715 m/s

1665 m/s

2200 m/s

380 m/s800 m/s

1675 m/s

2375 m/s

380 m/s

800 m/s

1675 m/s

2375 m/s

350 m/s

840 m/s

2010 m/s

3200 m/s

350 m/s

2010 m/s

3200 m/s

330 m/s735 m/s

2000 m/s

2950 m/s

330 m/s735 m/s

2000 m/s

2400 m/s

330 m/s850 m/s

1820 m/s

2300 m/s



860

880

900

920

940

960

ELE

VA

TIO

N (m

)






METRES

0 10 20 30 40



BEDROCK SURFACE





SL-5SL-8SL-6

SH14-17(5 OFF)

SH14-22 SH14-22ASH14-10

NRRFTL

UGTUGLU

MGT

LGLUUGFNR

WB (Mafic)

NRRF TL

UGT

NR

NR

UGT

UGLUMGT

LGLU

UGF

WB (Mafic)

NRRFNR RFTL

UGT

UGLUMGTLGLU

LGT

WB (Vol)

385 m/s850 m/s

1820 m/s

2500 m/s

385 m/s850 m/s

1820 m/s

2500 m/s

330 m/s805 m/s

1750 m/s

2500 m/s

330 m/s

805 m/s

1750 m/s

2500 m/s



860

880

900

920

940

960E

LEV

ATI

ON

(m)






METRES

0 10 20 30 40



BEDROCK SURFACE





SL-1 SL-2 SL-3

NRRF NRRF

UGT

UGLU MGTLGLUUGFLGF

LGT

WB (sed)

RF

UGT

UGLU UGTUGLU

MGT

LGLUUGF

WB (sed)

WB (Mafic)

NRRF

NRRFTL

UGT

UGLUMGTLGLU

LGT

WB (Vol)

NRRF

RFOL

UGT

MGTUGFLGT

WB (Mafic)

NRRF TLRFOLUGT

NRUGT

MGTUGFLGT

WB (Mafic)

SH14-04 SH14-03 SH14-10

SH14-11B SH14-11

345 m/s

875 m/s

1800 m/s

2400 m/s

345 m/s

875 m/s

1800 m/s

2400 m/s

370 m/s830 m/s

1750 m/s

2800 m/s

370 m/s830 m/s1750 m/s

2800 m/s



860

880

900

920

940

960E

LEV

ATI

ON

(m)






METRES

0 10 20 30 40



BEDROCK SURFACE





SL-1 SL-2 SL-3NR RFTL

UGT

MGTLGLUNRLGLU

LGFLGT

WB (sed)

WB (Vol)

NRRFTLUGTUGLU

MGT

LGLUUGFNR

WB (Mafic)

SH14-16 SH14-17

430 m/s1030 m/s

1650 m/s

2500 m/s

1030 m/s

1670 m/s

2500 m/s

430 m/s760 m/s

1785 m/s

2450 m/s

430 m/s760 m/s

1785 m/s

2450 m/s



860

880

900

920

940

960E

LEV

ATI

ON

(m)






METRES

0 10 20 30 40



BEDROCK SURFACE





SL-1 SL-2 SL-3NRRFTL

UGT

MGT LGLULGFLGT

WB (Vol.)

NR TL and RFNRTL

UGT

MGTLGLUUGFLGFLGT

WB (sed)

NRTL and RFTL

UGT

UGLUMGT

LGLU

UGF

WB (sed)

NR

UGT

UGLUMGT

LGLU

UGF

WB (Mafic)

SH14-07(8.3 OFF) SH14-14

(5.9 OFF)SH14-15 SH14-22A

480 m/s

1005 m/s

1660 m/s

2430 m/s

480 m/s1005 m/s

1660 m/s

2430 m/s

560 m/s900 m/s

1720 m/s

2490 m/s

560 m/s900 m/s

1720 m/s

2490 m/s



860

880

900

920

940

960E

LEV

ATI

ON

(m)






METRES

0 10 20 30 40



BEDROCK SURFACE





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