Tasmanian TASGO three dimensional (3D) VRML model

Note: This metadata describes the 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: ANZCW0703005881

Title: Tasmanian TASGO three dimensional (3D) VRML model

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Custodian

Custodian: Geoscience Australia

Jurisdiction: Australia

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The Tasmanian TASGO 3D model is a model of the geological structure of Tasmania. It contains: interpretations of the TASGO seismic reflection data and reflection and refraction paths from the TASGO seismic refraction survey, plus elevation, bathymetry, satellite imagery, geology maps, geophysical images, major geological structures, gold deposits, geochronology sites, and Dundas area seismic interpretations, cross-sections and fault planes. It is an interactive VRML (Virtual Reality Modelling Language) model. Users can turn data layers on and off and manipulate the model by rotating, zooming and panning. It is a product of the TASGO project, a National Geoscience Agreement (NGA) project between Mineral Resources Tasmania and Geoscience Australia.

ANZLIC search words:

GEOSCIENCES Geology Models
GEOSCIENCES Geophysics Mapping

Spatial domain:

locality map

Geographic extent name: TASMANIA - TASMANIA - Drainage Divisions and Major River Basins - Australia

Geographic extent name: TASMANIA - TAS - State or Territory - Tasmania

Geographic extent polygon: 143.75 -39.75, 148.75 -39.75, 148.75 -43.75, 143.75 -43.75, 143.75 -39.75,

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

Geographic bounding box:: North bounding latitude: -39.75 °; South bounding latitude: -43.75 °; East bounding longitude: 148.75 °; West bounding longitude: 143.75 °

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Data currency

Beginning date: Not Known

Ending date: Not Known

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Dataset status

Progress: Complete

Maintenance and update frequency: Not Known

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Access

Stored data format:: DIGITAL - wrl VRML file Map Grid of Australia (MGA) GDA94

Available format type:: DIGITAL - wrl VRML file Map Grid of Australia (MGA) GDA94

Access constraints:

Available for free from the Geoscience Australia web site (http://www.ga.gov.au).

Free Data Download

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Data quality

Lineage:

The below information lists the data sources for each of the layers in the model. For data sourced from Geoscience Australia (GA), more information is available from the GA web site (http://www.ga.gov.au).

Coast. 1:250 000 scale mapping, from Geoscience Australia (GA)

Geology. 1:500 000 scale mapping, from Mineral Resources Tasmania (MRT)

Elevation. Digital elevation model (DEM), from MRT

Bathymetry. 1km resolution bathymetry and elevation grid, from GA

Gravity. Pseudocolour bouguer gravity image, from GA

Magnetics. Pseudocolour image, from MRT.

Crustal elements. From MRT.

Satellite image. Landsat 7 ETM+ image, from GA.

Element boundaries. 1:500 000 synthesis, from MRT.

Granite contours. From MRT.

Granite top surface. Derived from granite contours, from MRT

Major faults. Derived from seismic interpretation and element boundaries, from GA.

Midcrustal layer, Moho surface and Northwest layers 1 and 3. Crustal interface layers. The Moho surface is the interface between crust and mantle. From Nick Rawlinson. More information about Nick Rawlinson's work is available from http://www.earth.monash.edu.au/AGCRC/people/Nick_Rawlinson/index.html.

Reflection and Refraction paths. Modelled ray paths from the TASGO seismic survey. From Nick Rawlinson. More information on the TASGO survey is available from http://www.earth.monash.edu.au/AGCRC/people/Nick_Rawlinson/surveyd.html.

Offshore seismic. From the TASGO seismic survey.

All gold localities and operating mines. From MRT.

Geochronology. SHRIMP analyses from GA's Ozchron database.

Dundas area data:

Faults. Derived from Ron Berry cross-sections, seismic interpretations and surface geology.

Seismic lines ags95-t1 and t2. From TASGO seismic survey.

Cross sections. Derived from surface geology, potential field modelling and section balancing. from Ron Berry.

Positional accuracy:

Positional accuracy varies from layer to layer and, if not documented in the original data source, can only be estimated.

Attribute accuracy:

Attribute accuracy varies from layer to layer and, if not documented in the original data source, can only be estimated.

Logical Consistency:

Logical consistency varies from layer to layer. For more information, see the documentation for the original data sources.

Completeness:

Completeness of coverage, classification and verification varies from layer to layer. For completeness of coverage, some layers (such as elevation and bathymetry) completely cover the model area. Other layers (such as the seismic sections) cover only a small part of the model area. Detailed data is available for the Dundas area, but not for other areas. See the documentation for the original data sources for more information.

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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: sales@ga.gov.au

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Metadata information

Metadata date: 2013-03-08

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Additional metadata

Metadata reference XHTML: http://www.ga.gov.au/meta/ANZCW0703005881.html

Metadata reference XML: http://www.ga.gov.au/meta/ANZCW0703005881.xml

The following references provide more information on the model and on the data contained in the model.

Berry, R.F., 1999. Inversion and the style of faulting in Western Tasmania. Geological Society of Australia, Specialist Group in Tectonics and Structural Geology, Field Conference, Halls Gap. Geological Society of Australia, Abstracts, no. 53, pp. 6-7.

Korsch, R.J., Drummond, B.J., Brown, A.V. and Barton, T.J., 2001. The crustal structure of Tasmania based on deep seismic reflection profiling. In: The Geological Framework of Tasmania Workshop 13-14 June 2001, Abstracts Volume, Australian Geological Survey Organisation & Mineral Resources Tasmania, p. 7.

Korsch, R.J., Drummond, B.J., Nicoll, M.G., Brown, A.V., Richardson, R.G., Reed, A.R., McClenaghan, M.P. and Everard, J.L. 2001. Towards constructing a three-dimensional geological model of Tasmania. In: The Geological Framework of Tasmania Workshop 13-14 June 2001, Abstracts Volume, Australian Geological Survey Organisation & Mineral Resources Tasmania, p. 9.

Rawlinson N., Collins C. D. N., Semenova T. O. and Houseman G.A. 1998. Crustal architecture from seismic refraction data along the north and east coasts of Tasmania. In: Finlayson, D.F. & Jones, L.E.A. (eds.) Mineral systems and the crust-upper mantle of Southeast Australia. Australian Geological Survey Organisation, Record, 1998/2, 155-158.

Rawlinson, N., Houseman, G.A., Collins C.D.N., and Drummond, B.J., 2001. New evidence of Tasmania's tectonic history from a novel seismic experiment. Geophysical Research Letters, 28, 3337-3340.

Authors:Korsch, R.J. Drummond, B.J. Nicoll, M.G. Brown, A.V. Richardson, R.G. Reed, A.R. McClenaghan, M.P. Everand, J.L. Hay, R.J.

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