uncovering the coompana province -...

UNCOVERING The Coompana

Province Pre-competitive data acquisition and

GSSA work program

R.A. Dutch

Coompana Exploration Release Areas

Industry Information Session, Tonsley, May 2016

2Department of State Development

A true greenfield terrain

As weve heard today, there is not a lot of information currently available

on the Coompana Province

However a little data makes a lot of difference, we can already begin to

place geodynamic controls on the region from a little existing drilling

There are many challenges but the potential exists for huge gains

The opportunity exists for explorers to become first movers in a new

province, working collaboratively with the GSSA


Part of a bigger project

The Coompana campaign forms part of a larger collaborative program of

data collection and geoscience looking to understand and open up the

western margins of the Gawler Craton

This includes the underexplored western Gawler Craton together with the

Musgrave Province and Coompana Province


A collaborative effort

This is a big task and opens the way for extensive collaboration between

the GSSA and our partners under the banner of the UNCOVER initiative:

Government:

University:

Industry:

Maybe you?


Opening up a frontier

The GSSA, in collaboration with our partners, are committed to de-risking

exploration in the far west of SA and opening up a new frontier for mineral

exploration

This includes a huge $ investment in pre-competitive data collection and the

Western Margins project being a Tier 1 priority for the GSSA

To date ~$6.5M committed or expended PACE precompetitive data collection = $1.7M EG1 Seismic line

$1.3M Coompana Magnetics and Radiometrics

$600K AusLAMP ($540K from Geoscience Australia)

$50K Regional Biogeochemistry

$20K Passive seismic and AMT

$1.0M Regional gravity

$2.25M (currently) Coompana regional drilling

So what is planned


Magnetics old and new

New data collected at 400m and 200m (over Coompana Mag Anomaly)

255264 line kms Available now via SARIG


Biogeochemistry

This reconnaissance biogeochemical survey was

designed to sample common plant species and

establish a first reference biogeochemical dataset for

future exploration

leaves analysed for 65 elements

dominant species are bladder saltbush and pearl

bluebush, with samphire also present across the

Nullarbor Plain

Available now via SARIG


Re-analysis of existing samples

A number of existing wells have been sampled and re-analysed. This

includes new geochronology, geochemistry and isotopic data.

Unfortunately mostly from cuttings

A UofA honours project has already been completed looking at the

petrogenesis of the Coompana basalts

New mapping, geochronology, geochemistry and

Isotopic analysis on the St Peter Suite. A re-appraisal

of a potential correlative of the Coompana basement is

currently underway


Whats coming results of EG1 seismic line

Results from the EG1 deep crustal seismic

reflection profile will be released at a dedicated

session at the 2016 AESC conference in

Adelaide

The data will be available for download from

SARIG mid June

Results from the western Gawler Craton

section are available now (Dutch et al., 2015.

GSSA Report book 2015/00029)


Whats coming New Gravity

A new Gravity data set will be collected later this year. ~5500 stations at

2km, 8300 stations at 1km and 1500 stations at 500m spacing


Whats coming Radiometrics

A new radiometric dataset

is currently in QA/QC

This dataset will fill a major

gap in the states

radiometric data and

provide useful information

of landforms (locations of

caves?)


Whats coming New DEM

New 400m and 200m

resolution radar altimeter DEM

image

Landform analysis

Neotectonic analysis

Mineral sands exploration

Available via SARIG soon


Whats coming Modelling of Magnetic intrusions

In collaboration with Clive Foss, CSIRO.

Depth to magnetic basement.

Accurate locations of remnantly magnetized bodies.


Whats coming Passive Seismic & AMT

In collaboration with GA six sites of short deployment passive seismic arrays (13

instruments) and AMT have been collected over existing drill holes with known

constraints.

This is a test case to see how well these techniques image the overlying cover

and provide accurate depth to basement estimates.

If successful will be rolled out over planned drill sites

CD1

Alballa-KarooGuinewarra

KN1

HughesDenman


Whats coming AusLAMP results

Geoscience Australia, the University of

Adelaide and the GSSA has completed

acquisition of the AusLAMP MT array in

the west of SA

This dataset will provide important

constraints on the lithospheric

architecture of this margin. Particularly

useful when coupled with the EG1

seismic and MT line

Currently awaiting results


Whats coming Geochemical and Provenance study of cover sequences

The GSSA in collaboration with the Energy Resources Group and the ASP are

planning to re-asses the stratigraphy of the overlying Officer, Denman and Bight

basins.

This will include full suite lithogeochemical profiling and zircon provenance study


Whats coming Regional Drilling Program

Planned for a Q2 2017 start. The GSSA (potentially in collaboration with

Geoscience Australia) will undertake a ~$2.25M regional drilling program in the

Coompana Province and western margins region

Planning is currently underway and more details will follow soon


DisclaimerThe information contained in this presentation has been compiled by the

Department of State Development and originates from a variety of sources.

Although all reasonable care has been taken in the preparation and

compilation of the information, it has been provided in good faith for general

information only and does not purport to be professional advice. No

warranty, express or implied, is given as to the completeness, correctness,

accuracy, reliability or currency of the materials.

The Department of State Development and the Crown in the right of the

State of South Australia does not accept responsibility for and will not be

held liable to any recipient of the information for any loss or damage

however caused (including negligence) which may be directly or indirectly

suffered as a consequence of use of these materials. The Department of

State Development reserves the right to update, amend or supplement the

information from time to time at its discretion.

Contact

www.minerals.statedevelopment.sa.gov.au

Dr. Rian Dutch

Geological Survey of South Australia

E: [email protected]

Department of State Development

Level 7, 101 Grenfell St

Adelaide, South Australia 5000

GPO Box 320

Adelaide, South Australia 5001

T: +61 8 8226 3821

E: [email protected]

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