Sedimentary Basins of Australia - basin outlines and basement relief image (National Geoscience Dataset)

Note : This dataset description is metadata (data about data) which describes the actual dataset in accordance with the ANZLIC (Australia New Zealand Land Information Council) Core Metadata Guidelines Version 2.

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Dataset citation

ANZLIC unique identifier: ANZCW0703002747
Title: Sedimentary Basins of Australia - basin outlines and basement relief image (National Geoscience Dataset)

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Custodian

Custodian: Geoscience Australia
Jurisdiction: Australia

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Description

Abstract: The image is based on a preliminary version of depth to basement map compiled as part of AGSO marketing activities aimed at encouraging further exploration of Australian oil and gas reserves. The image highlights distribution and shape of Australian onshore and offshore sedimentary basins. For most of the mapped area the image reflects depth to the basement (onshore basins, eastern and southern margins). In the absence of depth to the basement data, the deepest horizon or the horizon reflecting rift-phase development of the basin has been mapped (North West shelf).

ANZLIC search words and qualifiers:

- MARINE Geology and Geophysics

Geographic extent name: AUSTRALIA EXCLUDING EXTERNAL TERRITORIES - AUS - Australia

Note: The format for each Geographic extent name is: Name - Identifier - Category - Jurisdiction (as appropriate) See GEN Register

Geographic bounding box:

North bounding latitude: -6

South bounding latitude: -46

East bounding longitude: 155

West bounding longitude: 106

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Data currency

Beginning date: 1997-01-01
Ending date: 1998-09-01

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Dataset status

Progress: Complete
Maintenance and update frequency: not planned

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Access

Stored data format:

DIGITAL: bil Band interleaved by line (BIL) image Geographic WGS84

DIGITAL: bil Band interleaved by line (BIL) image Lambert Conformal Conic WGS84

Available data format:

DIGITAL: bil Band interleaved by line (BIL) image Lambert Conformal Conic WGS84

Access constraints: Free to download

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Data quality

Lineage:
Forty-four published/unpublished contour maps (1977-1994) were used in the compilation, at scales from 1:250 000 to1:2 000 000. Large-scale maps were generalised to the 1:5 000 000 scale. Contour maps were digitised using Petroseis. Before gridding, outcrops of crystalline basement and some Proterozoic basins (Nabberu, Bangemall, Hamersley, Kimberley) were outlined by zero contours. There were no data for the Wiso Basin. Petroseis contours were converted into an Arcinfo coverage and then into an Arcinfo grid. The Petroseis grid was exported in TIFF format and georeferenced in Arcinfo. The image was then projected into Lambert Conformal Conic projection.

Positional accuracy:
Nominal Scale 1:5,000,000

Pixel sizes :-
For images in LAMBERT CONFORMAL CONIC PROJECTION - 2000 metres
For images in GEOGRAPHIC PROJECTION - 0.019 degrees

Variable as the datasets come from a variety of sources at a variety of scales. To accurately determine the source information of data used in compilation as second dataset is stored (dtbase_contours_references) which indicates the bibliographic references of poligonal areas of the final contour dataset (dtbase_contours).

Attribute accuracy:
Accurate as from the source information available.

Logical consistency:
Data has been checked visually and digitally for consistency with source information. Every effort has been made to ensure that the accuracy of the source data have been maintained.

Completeness:
Complete for the coverage of continental Australia and Australia's continental margins.

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Contact information

Contact organisation: Commonwealth of Australia (Geoscience Australia)
Acronym: GA
Position: Manager Client Services
Address: Cnr Jerrabomberra Ave and Hindmarsh Dr
Address: GPO Box 378
Suburn: Canberra
State: ACT
Country: Australia
Postcode: 2601
Phone: 02 6249 9966
Fax: 02 6249 9960
Email: sales@ga.gov.au

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Metadata information

Metadata date: 1998-11-05 00:00:00.0

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Additional metadata

NOTE : these images can be used in conjunction with the sedimentary basins dataset (GEOMET NO : 2381) which has an attribute base_pros (used so you can highlight prospective basins, in Arcview load the legend baspros.avl with the sedimentary basins) A colour bar legend is included with this image dataset.

Authors:
Borissova, I. , Kilgour, B.

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This report was generated on 24 May 2013.