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Geological Regions of Australia, 1:5 000 000 scale

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

Dataset citation

ANZLIC unique identifier: ANZCW0703002397

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


Custodian: Geoscience Australia

Jurisdiction: Australia



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:


Spatial domain:

locality map

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

Geographic extent polygon: 113 -10, 154 -10, 154 -44, 113 -44, 113 -10,

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 °

Data currency

Beginning date: 1997-01-01

Ending date: 1998-09-01

Dataset status

Progress: Complete

Maintenance and update frequency: Not Known


Stored data format:
DIGITAL - ArcGIS-coverage ArcInfo coverage Geographic WGS84
Available format type:
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

Free Data Download

Data quality


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.


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

Contact information

Contact organisation: Commonwealth of Australia (Geoscience Australia) (GA)
Contact position: Manager Client Services
Mail address: Cnr Jerrabomberra Ave and Hindmarsh Dr
Mail address: GPO Box 378
Locality: Canberra
State: ACT
Country: Australia
Postcode: 2601
Telephone: 02 6249 9966
Facsimile: 02 6249 9960
Electronic mail address:

Metadata information

Metadata date: 2013-03-08

Additional metadata

Metadata reference XHTML:

Metadata reference XML:


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 Geological region polygons 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.