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Leonora - Edjudina aeromagnetic interpretation

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: ANZCW0703004261

Title: Leonora - Edjudina aeromagnetic interpretation


Custodian

Custodian: Geoscience Australia

Jurisdiction: Australia


Description

Abstract:

The map addresses the distribution of Archaean rocks of the central Eastern Goldfields of Western Australia. Interpretation was undertaken at 1:250 000 scale for both Geoscience Australia aeromagnetic data (400m linespacing) and Fugro Airborne Surveys Pty. Ltd. data (200m linespacing). The Archaean rocks are subdivided into undivided gneiss-migmatite-granite (Agmg), banded gneiss (Agn), greenstone (Aa), and granite plutons (Ag). Where important relative differences in magnetisation are mapped, the geophysical map units include the suffixes _h (high), _m (medium), _l (low) and _r (remanent) for the level of magnetisation. Dykes, faults, and unassigned small intrusives are also mapped. The map is derived from a subset of a more extensive interpretation covering the exposed extent of the Yilgarn Craton.

ANZLIC search words:

  • GEOSCIENCES Geophysics

Spatial domain:

locality map

Geographic extent name: EDJUDINA - WA-2415 - 1:50 000 Map Series - Western Australia

Geographic extent name: LAVERTON - WA-2195 - 1:50 000 Map Series - Western Australia

Geographic extent name: LEONORA - WA-2243 - 1:50 000 Map Series - Western Australia

Geographic extent name: MENZIES - WA-2365 - 1:50 000 Map Series - Western Australia

Geographic extent name: KALGOORLIE - WA-2522 - 1:50 000 Map Series - Western Australia

Geographic extent polygon: 120 -28, 123 -28, 123 -30, 120 -30, 120 -28,

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

Geographic bounding box:
North bounding latitude: -28 °
South bounding latitude: -30 °
East bounding longitude: 123 °
West bounding longitude: 120 °

Data currency

Beginning date: 2001-12-01

Ending date: Not Known


Dataset status

Progress: In Progress

Maintenance and update frequency: Not Known


Access

Stored data format:
DIGITAL - ArcGIS-coverage ArcInfo coverage Geographic GDA94
Available format type:
DIGITAL - ArcGIS-coverage ArcInfo coverage Geographic GDA94

Access constraints:

Licence required.

Free Data Download

Data quality

Lineage:

The lines and polygons of the aeromagnetic interpretation were drawn on film overlaying images at 1:250,000 scale. Images, produced at Geoscience Australia, of TMI and the 1st vertical derivative of TMI were used for interpretation of the 400 m and 200 m line spaced aeromagnetic data. The film drawings were subsequently scanned, digitised on screen and attributed.

Positional accuracy:

The estimated positional accuracy of mapped anomalies and boundaries for the aeromagnetic interpretation is in the order of 200 - 500 m (drawing accuracy at 1: 250 000 interpretation capture scale) where flight lines cut anomalies at right angles, but may be less accurate where flight lines cross anomalies at acute angles.

Attribute accuracy:

The assigned attributes in the interpretive covers are qualitative as may be expected from interpretation of regional aeromagnetic data. However, extensive field work has been undertaken on the Kalgoorlie 1:1M Sheet to 'ground truth' aspects of the interpretations.

Logical Consistency:

Data have been checked/edited visually on plots and for topological consistency using in-house routines and Arc/Info software.

Completeness:

Aeromagnetic data coverage of this part of the Yilgarn Craton includes surveys with specifications 400 m to 200 m line spacing and 7 to 10 m station spacing along lines giving rise to differences in interpretation detail across the interpreted data sets. The interpretation was captured at 1:250 000 scale for use at 1:500 000 to 1:1M scale and summarises detail available in the images (ie not all anomalies are represented in the interpretation).


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/ANZCW0703004261.html

Metadata reference XML: http://www.ga.gov.au/meta/ANZCW0703004261.xml

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Authors:Whitaker, A.J.
SPATIAL INFORMATION FOR THE NATION