Abstract

A 3D map of the Cooper Basin region has been produced over an area of 300 x 450 km to a depth of 20 km. The 3D map was constructed from 3D inversions of gravity data using geological data to constrain the inversions. It delineates regions of low density within the basement of the Cooper/Eromanga Basins that are inferred to be granitic bodies. This interpretation is supported by a spatial correlation between the modelled bodies and known granite occurrences. The 3D map, which also delineates the 3D geometries of the Cooper and Eromanga Basins, therefore incorporates both potential heat sources and thermally insulating cover, key elements in locating a geothermal play. This study was conducted as part of Geoscience Australia's Onshore Energy Security Program, Geothermal Energy Project.
Google map showing geographic bounding box with values North bound -25.0 East bound 142.5 West bound 139.5 South bound -29.0
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Product Type/Sub Type

model - Model - Model

Constraints

license
Creative Commons Attribution 3.0 Australia Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

2009

Product Type

model

Topic Category

geoscientificInformation

Keywords

Model
Model
gravity
geophysics
Hot Rocks
3D model
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-25.0
East bound
142.5
West bound
139.5
South bound
-29.0

Lineage

Z horizon: The unconformity at the base of the Cooper Basin is mapped as the Z horizon and was generated by the Department of Primary Industries and Resources (PIRSA) from existing open file seismic sections, industry interpretations and 1300 wells (http://www.pir.sa.gov.au/petroleum/home/access_to_data/seismic_data/seismic_mapping/cooper_basin). The surface was generated in GoCad from an ERMapper format grid. C horizon: The Cadna-owie Formation is a sandstone aquifer near the base of the Cretaceous. The top of the formation corresponds to a prominent seismic horizon and was generated by PIRSA from existing open file seismic sections, industry interpretations and 1300 wells (http://www.pir.sa.gov.au/petroleum/home/access_to_data/seismic_data/seismic_mapping/cooper_basin). The surface was generated in GoCad from an RMapper format grid. Topography: The topographic surface was generated in GoCad from an ERMapper format grid of the 9 second Degital Elevation Model of Australia (2008), downloaded from GA's GADDS data delivery system (http://www.ga.gov.au/minerals/exploration/index.jsp#geophys). Granites: The base of granites surface was generated from inversions of gravity data. The gravity data was sourced from GA's GADDS data delivery system (http://www.ga.gov.au/minerals/exploration/index.jsp#geophys).

Digital Transfer Options

onLine

DISTRIBUTION Format

ts

Distributor

Role
distributor
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address

Metadata File Identifier

a05f7892-eafe-7506-e044-00144fdd4fa6

Metadata Standard Name

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Metadata Standard Version

1.1

Metadata Date Stamp

2014-02-14

METADATA SECURITY CLASSIFICATION

unclassified

Metadata Contact

Role
pointOfContact
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address
Downloads
For information on acquiring this product,
please contact Geoscience Australia Client Services via:

fax:
+61 2 6249 9960; or
phone:
1800 800 173 (within Australia);
 
+61 2 6249 9966 (outside Australia).