Gravity survey in the Fitzroy Basin, Kimberley Division, Western Australia, with special reference to the Nerrima structure  


Authors / CoAuthors

Wiebenga, W.A. | van der Linden, J.

Abstract

The Fitzroy Basin is situated south-east of Derby in the Kimberley Division of Western Australia. Results are given of a semi-detailed gravity survey which was made of the portion of the basin between longitudes 123°40' and 124°30' and latitudes 18°05' and 18°40'. The survey disclosed a large basin structure at least 7,000-8,000 feet deep and a few minor anomalies which may prove important. It is not known whether the higher density formation at 7,000-8,000 feet depth in the basin represents Pre-Cambrian basement or sediments of Devonian or Ordovician age. The position of, and displacement on, the Fenton Fault system were indicated. A detailed gravity survey of the Nerrima structure confirmed the existence of faults which had been mapped by the Bureau's geological and seismic parties, but was unable to determine the depths to which these faults penetrated. Seismic refraction work and test drilling are recommended south of the Fenton Fault, between Barnes' Flow and Mt. James, to disclose the nature of the higher density formation. Recommendations are also made for an extension of the detailed gravity survey to areas in which anomalies were revealed by the semi-detailed survey.

Product Type

document

eCat Id

9230

Contact for the resource

  Custodian

Corp  

  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

  • GA PublicationRecord
( Theme )
  • gravity
( Theme )
  • geology
  • AU-WA
Australian and New Zealand Standard Research Classification (ANZSRC)
  • Gravimetrics
  • Published_External

Publication Date

1953-01-01T00:00:00

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

unknown

Topic Category

geoscientificInformation

Series Information

Record 1953/064

Lineage

Legacy product, lineage not available

Parent Information

Extents

[-18.7, -18.0, 123.6, 124.5]

Reference System

Spatial Resolution

Service Information

Associations

Downloads and Links

Download the Record (pdf)  

Source Information

Legacy product, source data not available.