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Cootamundra, interpreted geology based on geophysics and previous geological mapping

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: ANZCW0703002366

Title: Cootamundra, interpreted geology based on geophysics and previous geological mapping


Custodian

Custodian: Geoscience Australia

Jurisdiction: Australia


Description

Abstract:

This dataset is an interpretation of the geology of the Cootamundra 1:250000

Sheet area based on airborne geophysics and gravity data

ANZLIC search words:

  • GEOSCIENCES Geophysics Maps

Spatial domain:

locality map

Geographic extent polygon: 147 -34, 148.5 -34, 148.5 -35, 147 -35, 147 -34,

Geographic bounding box:
North bounding latitude: -34 °
South bounding latitude: -35 °
East bounding longitude: 148.5 °
West bounding longitude: 147 °

Data currency

Beginning date: 1997-01-01

Ending date: 1997-12-31


Dataset status

Progress: Complete

Maintenance and update frequency: Not Known


Access

Stored data format:
DIGITAL - ArcGIS-coverage ArcInfo coverage Universal Transverse Mercator (UTM) WGS84
Available format type:
DIGITAL - ArcGIS-coverage ArcInfo coverage Universal Transverse Mercator (UTM) WGS84
DIGITAL - dat Data file MapInfo Universal Transverse Mercator (UTM) WGS84
DIGITAL - shp ArcView shape file ArcView Universal Transverse Mercator (UTM) WGS84

Access constraints:

Licence and fee required

Free Data Download

Data quality

Lineage:

This map presents an interpretation of the geology of the Cootamundra 1:250 000 sheet area, based on integration of airborne geophysical data, gravity data and previous geological mapping (Warren, A.Y.E., Gilligan, L.B. and Raphael, N.M., 1996. Cootamundra 1:250 000 Geological Sheet SI/55-11. Second edition. Geological Survey of New South Wales, Sydney.

The interpretation was produced with reference to the mapped outcrop geology from the Cootamundra 1:250000 Geology Map (Second Edition 1996). This map should be inspected to gain an understanding of the geological framework used for the geophysical interpretation. The airborne geophysical data were acquired during a survey that was part of the National Geoscience Mapping Accord and jointly funded by AGSO and the Geological Survey of New South Wales. The survey was flown by AGSO alongeast-west lines, 250 metres apart and at a nominal terrain clearance of 80 metres.

The interpretation of the data consisted of two phases:

Phase 1: Outlining magnetic sources.

Phase 2: Correlation of known geology with geophysical responses and the outlining and identification of geological units.

The images used for the interpretation and this geophysical interpretation map are available in digital format, suitable for use in most GIS applications.

Positional accuracy:

No analysis of the positional accuracy of features has been undertaken, however intuitively it is considered that about 95pc of the features are within 150 meters of their true position.

Attribute accuracy:

Lines were given identifications based on geological features as used on the current 1:250 000 geological map (Warren, A.Y.E., Gilligan, L.B. and Raphael, N.M., 1996. Cootamundra 1:250 000 Geological Sheet SI/55-11. Second edition. Geological Survey of New South Wales, Sydney).

Some other purely geophysical identifications were also used.

High leves of confidence can be given to the link between this dataset and the above geological map. The confidence level of the geology map is unknown.

Logical Consistency:

The GIS package ArcInfo was used to do a topological consistency check to detect flaws in the spatial data structure. This check ensured that line topology exists. Where possible, geologically significant terms have been used.

All data have been checked and collated to ensure consistency of naming conventions and attribute definition

Completeness:

Complete geophysical data were acquired over the entire area, which were interpreted at a consistent scale. Anomalies which, based on their geophysical signature, did not have a defineable width were represented as linear features.

There was no generalisation or field verification of the polygons in this dataset.


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

Metadata information

Metadata date: 2013-03-08


Additional metadata

Metadata reference XHTML: http://www.ga.gov.au/meta/ANZCW0703002366.html

Metadata reference XML: http://www.ga.gov.au/meta/ANZCW0703002366.xml

.

Authors:Duggan, M. Mackey, T.E. Bacchin, M.
SPATIAL INFORMATION FOR THE NATION