Digital geological mapping data



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Digital geological mapping data

Queensland Geology and structural framework GIS data - current to August 2012

The data on this DVD contains the converted shapefiles, layer files, raster images and project .mxd files used on the Queensland geology and structural framework map. The maps were developed in ArcGIS 9.3.1 and the data stored in file geodatabases, topology created and validated. This provides greater data quality by performing topological validation on the feature's spatial relationships. For the purposes of the DVD, shapefiles were created from the file geodatabases and for MapInfo users MapInfo .tab and .wor files. The shapefiles on the DVD are a revision of the 1975 Queensland geology data, and are both are available for display, query and download on the department's online GIS application.

The Queensland geology map is a digital representation of the distribution or extent of geological units within Queensland. In the GIS, polygons have a range of attributes including unit name, type of unit, age, lithological description, dominant rock type, and an abbreviated symbol for use in labelling the polygons. The lines in this dataset are a digital representation of the position of the boundaries of geological units and other linear features such as faults and folds. The lines are attributed with a description of the type of line represented. Approximately 2000 rock units were grouped into the 250 map units in this data set. The digital data was generalised and simplified from the Department's detailed geological data and was captured at 1:500 000 scale for output at 1:2 000 000 scale.

In the ESRI version, a layer file is provided which presents the units in the colours and patterns used on the printed hard copy map. For MapInfo users, a simplified colour palette is provided without patterns. However a georeferenced image of the hard copy map is included and can be displayed as a background in both ArcMap and MapInfo.

The geological framework of Queensland is classified by structural or tectonic unit (provinces and basins) in which the rocks formed. These are referred to as basins (or in some cases troughs and depressions) where the original form and structure are still apparent. Provinces (and subprovinces) are generally older basins that have been strongly tectonised and/or metamorphosed so that the original basin extent and form are no longer preserved. Note that intrusive and some related volcanic rocks that overlap these provinces and basins have not been included in this classification. The map was compiled using boundaries modified and generalised from the 1:2 000 000 Queensland Geology map (2012). Outlines of subsurface basins are also shown and these are based on data and published interpretations from petroleum exploration and geophysical surveys (seismic, gravity and magnetics).

For the structural framework dataset, two versions are provided. In QLD_STRUCTURAL_FRAMEWORK, polygons are tagged with the name of the surface structural unit, and names of underlying units are imbedded in a text string in the HIERARCHY field. In QLD_STRUCTURAL_FRAMEWORK_MULTI_POLYS, the data is structured into a series of overlapping, multi-part polygons, one for each structural unit. Two layer files are provided with the ESRI data, one where units are symbolised by name. Because the dataset has been designed for units display in the order of superposition, this layer file assigns colours to the units that occur at the surface with concealed units being left uncoloured. Another layer file symbolises them by the orogen of which they are part. A similar set of palettes has been provided for Map Info.

To purchase the Queensland Geology and structural framework GIS data on DVD

Mapping data - current to April 2014

Digital geological data includes vector coverage of 1:100 000, 1:500 000, 1:1 000 000, 1:2 000 000 and 1:2 500 000 scale geological maps, and raster colour scans of 1:250 000 scale geological maps.

The availability of these data can be seen on:

Digital vector data

The vector data represents the current status of the available data and is contained on the two DVD product Geoldata Queensland geological digital data - State, regional and detailed mapping November 2012 (PDF, 49 kB).

This release incorporates a major redevelopment by GSQ to migrate to an Enterprise Geodatabase which enforces data integrity by validating the data against topological rules and relationships for improved data quality not otherwise possible previously.

The data on the DVD provides new and updated geology over the North West Queensland Mineral and Energy Province, Hodgkinson Province, South East Queensland, North Connors Province and Drummond Basin. Seamless data is provided within each of these areas and topological errors have been corrected for NWQMEP and Drummond Basin, while validation in other areas is ongoing and will be available in future releases. For the NWQMEP, Georgetown and Charters Towers GIS areas solid geology interpretation has been completed and is provided as an additional dataset.

This edition will also include in the Regional map dataset the Queensland Structural Framework and Queensland Geology.

Data are supplied as fully attributed geological lines and polygons in MapInfo tab and ESRI shapefile formats, in geographic co-ordinates based on the Geocentric Datum of Australia (1994).

Additionally as a visualisation enhancement, the geological unit polygons on this DVD release are depicted using RGB colours approximating (on a PC monitor) those defined on the Australian Standard Colour Scheme for geological maps. The colour values have been chosen based on the Age and Rock Unit Type attribute of each polygon key held in the Geological Resources Database.

For this purpose, the 'ESRI Shape' folders contain a '1:250 000 tile name'_rock_units.lyr which can be viewed in ArcMap; and the 'MapInfo' folders contain a '1:250 000 tile name' for viewing the colouring in MapInfo. Please note that the colours in these layer and .tab files provided, are solid colours only and may not match exactly the colour that is printed on the corresponding hard copy geological map.

Similiarly a '1:250 000 tile name'_structures.lyr and '1:250 000 tile name' have been provided to symbolise structural layers.

Approximately 135 PDF files created from postscripts of recently published 1:100 000 maps or scans of some regional sheets are available for download from QDEX.

Attached to each of the map tiles is a metadata file in .xml and .html formats. Metadata statements provided with datasets that remain unchanged from their previous releases will contain content relevant to the time of that release, eg Agency name, contact details.

The data are presented in a two DVD jewel case with the detailed geological data on one DVD and regional map datasets on the other.

The set is available from the Department for the cost of provision (PDF, 12 kB).

Raster data (images) of 1:250 000 geological map sheets

Published 1:250 000 geological maps were scanned, in most cases, in four sections with one or two scans covering the map references. Derived JPEG images of the map faces were geo-referenced to AGD66 lat/long co-ordinates. These scans are contained on the DVD product Queensland geological mapping raster data images of 1:250 000 geological map sheets (PDF, 12 kB).

Available 1:250 000 geological map sheets can be seen on either of the vector data map links on this page.

Vector data in GIS data sets

Many of the map areas are also included in GIS sets along with additional data layers such as tectonic elements, solid geology, observations, mineral occurrences and geophysical images. However, unless otherwise indicated, the geology layers in the GIS packages have not been updated since the packages were released, therefore the map tiles in the Geoldata Queensland geological data - State, regional and detailed mapping product may contain more recent updates due to new work and error corrections.

To order

Further information

  • Email: Mark Hartland
    Telephone: +61 7 3035 5296
  • Geological Survey of Queensland
    PO Box 15216 City East QLD 4002
  • Geological information hotline
    +61 7 3006 4666 (9 am to 4 pm EST Monday to Friday)
  • Email: Geological information hotline

Last updated 4 April 2014