Australian Crustal Elements (National Geoscience Dataset)

Authors / CoAuthors

Shaw, R.D. | Wellman, P. | Gunn, P.J. | Whitaker, A.J. | Tarlowski, C.Z.

Abstract

The Australian Crustal Elements dataset delineates upper crustal elements, primarily based on composite geophysical domains, each of which shows a distinctive pattern of magnetic and gravity anomalies. These elements generally relate to the basement, rather than the sedimentary basins. Boundaries between these elements are interpreted to mark crustal-scale changes in composition or structural pattern, or both. Where feasible, these boundaries are chosen to emphasise their correlation with the outcropping boundaries of geological provinces.

Product Type

dataset

eCat Id

21195

Contact for the resource

Custodian

MNHD

Owner

Commonwealth of Australia (Geoscience Australia)

Custodian

Commonwealth of Australia (Geoscience Australia)
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia

Keywords

GIS DatasetNational

( Theme )

geophysics

( Theme )

geology

Australian and New Zealand Standard Research Classification (ANZSRC)

Earth Sciences

Published_External

Publication Date

1998-01-01T00:00:00

Creation Date

Security Constraints

Australian Government Security ClassificationSystem

Classification - unclassified

Legal Constraints

Creative Commons Attribution 4.0 International Licence

Access - license

Use - license

Status

Purpose

Maintenance Information

irregular

Topic Category

geoscientificInformation

Series Information

Lineage

Crustal element interpretation of current gravity and magnetics image data was digitised initially in Microstation (Integraph) and subsequently ported into Arcinfo, dictating the gravity, magnetic and resultant polgyon coverage of crustal elements. Attributes were added to the polgon and arc coverages after this. Gravity data 1.National Gravity Database derivative integrated ' 2.5km (91.5 minute) gridded format' 2.Contoured Bouger anomaly contour maps plotted at ' 1:2 500 000 scale' 3.Enhanced images of Bouger anomalies at 1:5 000 000 scale Magnetics data 1.National Magnetics Database derivative 1:1 000 000/1:2 500 000 ' scale contour maps' 2.Various scale anomaly images 3.Magnetic Anomaly 1:5 000 000 scale map of Australia, showing ' gradient enhanced residuals of total intensity'

Parent Information

Extents

[-42.0, -11.0, 113.0, 153.0]

Reference System

Spatial Resolution

Service Information

Associations

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