Geological Regions of Australia, 1:5 000 000 scale

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: ANZCW0703002397
Title: Geological Regions of Australia, 1:5 000 000 scale

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Custodian

Custodian: Geoscience Australia
Jurisdiction: Australia

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Description

Abstract: This data set is a classification of the Australian continent into 2-dimensional surface regions. A geological region is a relatively large geographical area with a cohesive, albeit in some cases complex, geological assemblage (Bain and Draper 1997, AGSO Bulletin 240); significantly different in overall geology from the adjoining regions, and differs from geological province in that it does not include depth or time dimensions. NOTE: Specialised Geographic Information System (GIS) software is required to view this data.

ANZLIC search words and qualifiers:

- GEOSCIENCES

- GEOSCIENCES Geology

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: -10

South bounding latitude: -44

East bounding longitude: 154

West bounding longitude: 113

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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: ArcGIS-coverage ArcInfo coverage Geographic WGS84

Available data format:

DIGITAL: dat Data file MapInfo Geographic WGS84

DIGITAL: shp ArcView shape file ArcView Geographic WGS84

DIGITAL: ArcGIS-coverage ArcInfo coverage Geographic WGS84

Access constraints: Free to download

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Data quality

Lineage:
The original data was derived from the digital version of the 1978 BMR 1:2 500 000 Geological Map of Australia. The individual units were attributed with the contents of BMR Bulletin 181 (Palfreyman, 1984). Linework and each attribute was validated against current geoscientific knowledge and the preliminary (Geology (1:2,500,000) (National Geoscience Dataset) by Shaw, Yeates, Doutch, Palfreyman and Blake, 1998)

Positional accuracy:
Nominal Scale 1:5,000,000 Variable depending on the historic source of some data and on subjective generalisations made by the authors.

Attribute accuracy:
Attributes are based on geoscientific information, mainly BMR Bulletin 181 but also on source maps and in reports and research papers. As some information is the result of highly detailed recent mapping and some is taken from reconnaissance mapping several years old, attribute accuracy is highly variable.

Logical consistency:
The dataset is highly consistent. A geoscientist inspected the finished dataset to make sure it was consistent not only the accuracy and standards of the source data, but the newly incorporated geological information. The dataset has also been topologically tested to detect flaws in the spatial data structure using Arcinfo GIS software. The testing ensures the dataset has been corrected to make sure attributed polygons are closed, nodes are formed at the intersection of lines and that there is only one label within each polygon. This process is a part of the standard quality assurance/quality control process Geoscience Australia has in place for digital GIS data.

Completeness:
The dataset coverage is complete for the whole of continental Australia.

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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: 2012-12-05 00:00:00.0

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Additional metadata

SHAPEFILES gregpldd.shp Geological region polygons greglndd.shp Geological region boundaries gregpldd.lyr ArcGIS layer file for polygons shapefile greglndd.lyr ArcGIS layer file for boundaries shapefile MAPINFO gregpldd.tab Geological region polygons greglndd.tab Geological region boundaries georegions.wor MapInfo workspace with data loaded into a view with legends Polygon attributes:- regname region name from OZROX database authority table regno region number from OZROX database authority table age_class broad classification of regions main age into 9 classes main_age dominant age of exposed rock aprox_area approximate area of region in square kilometres landforms physiography of region stratig general description of overall stratigraphy exposed in the region igneous description of igneous rocks exposed in region reg_meta regional metamorphism of rocks within the region deformatin an indication of deformation of rocks within the region mindeps indication of mineral deposits in region geodx_ref GEODX database reference code of references used in region information

Authors:
Blake, D.H. , Kilgour, B.

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This report was generated on 20 Jun 2013.