Abstract

This dataset represents the results of the assessment of the potential for uranium and geothermal energy systems in the southern Northern Territory. Four uranium systems were targeted: 1) sandstone-hosted, 2) uranium-rich iron oxide-copper-gold, 3) unconformity-related, and 4) magmatic-related. These were assessed for using a 2D, GIS-based approach, and utilised a mineral systems framework. In addition to the uranium systems investigated, the potential for hot rock and hot sedimentary aquifer geothermal systems was also assessed. Only the results of the hot rock geothermal assessment are presented here, since the assessment for hot sedimentary aquifer geothermal systems is more qualitative in nature. The assessment for hot rock geothermal systems was undertaken in a 3D environment, with temperatures at depth predicted using the 3D GeoModeller software package.
Google map showing geographic bounding box with values North bound -21.0 East bound 136.0 West bound 131.0 South bound -26.0
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Product Type/Sub Type

dataset - Data Package

Constraints

license
Creative Commons Attribution 3.0 Australia Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

2012

Product Type

dataset

Topic Category

geoscientificInformation

Keywords

Data Package
energy
mineral exploration
geothermal
prospectivity
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-21.0
East bound
136.0
West bound
131.0
South bound
-26.0

Lineage

Criteria for the uranium systems assessment were developed from geological, geochemical and geophysical data. Solid geology was compiled for the study area using existing solid geology datasets published by the Northern Territory Geological Survey, Geoscience Australia's 1:1 000 000 surface geology of Australia map and geophysical imagery. Additional information on the compilation of solid geology for the assessment is provided in the accompanying report. Geochemical data were compiled from Geoscience Australia's OZCHEM dataset (http://www.ga.gov.au/meta/ANZCW0703011055.html#distinfo), and were supplemented by a small number of samples from the Northern Territory Geological Survey's open-file geochemical dataset (accessed at http://geoscience.nt.gov.au/GeosambaU/strike_gs_webclient/default.aspx). Radiometric, magnetic and gravity data were also used to develop some criteria. These data were sourced from Geoscience Australia databases and are publicly available via the Geoscience Australia website. Derivative products of the input datasets were developed for the uranium assessments (e.g., buffering). Decisions concerning the development of these derivatives, such as the selection of buffer distances and assignment of cutoff values, were made subjectively based on the scientific judgement of the analyst. Further details of these are given in the respective sections of the accompanying report for each system. Hot rock geothermal prospectivity is derived from the modelled temperature at 4 km depth slice extracted from a 3D thermal model. The thermal modelling was performed using a 3D geological map constructed from geological and geophysical data to a depth of 15 km. The 3D map incorporates geological elements which were assigned heat-production and thermal-conductivity values. Thermal-conductivity values were assigned to each unit of the 3D map and were sourced from published measurements or estimated from lithological descriptions. Heat production was calculated using radiometric data sourced from Geoscience Australia and also assigned to the 3D map. Interpreted depth of sedimentary cover was determined using modelled depth to magnetic basement, seismic data and a digital elevation model sourced from Geoscience Australia.

Digital Transfer Options

onLine

DISTRIBUTION Format

misc

Distributor

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

Metadata File Identifier

c2b8c69f-dd82-71a0-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

2012-06-18

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 the Geoscience Australia Sales Centre via:

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

Please note that support hours are 9 am to 5 pm weekdays