CSIRO Publishing blank image blank image blank image blank imageBooksblank image blank image blank image blank imageJournalsblank image blank image blank image blank imageAbout Usblank image blank image blank image blank imageShopping Cartblank image blank image blank image You are here: Journals > Exploration Geophysics   
Exploration Geophysics
  The Journal of the Australian Society of Exploration Geophysicists
blank image Search
blank image blank image
blank image
  Advanced Search

Journal Home
About the Journal
Editorial Structure
For Advertisers
Online Early
Current Issue
Just Accepted
All Issues
Special Issues
Sample Issue
For Authors
General Information
Submit Article
Author Instructions
Open Access
For Referees
Referee Guidelines
Review an Article
Annual Referee Index
For Subscribers
Subscription Prices
Customer Service
Print Publication Dates

blue arrow e-Alerts
blank image
Subscribe to our Email Alert or RSS feeds for the latest journal papers.

red arrow Connect with CP
blank image
facebook twitter LinkedIn

red arrow Submit Article
blank image
Use the online submission system to send us your paper.

red arrow Connect with ASEG
blank image
facebook twitter LinkedIn

red arrow Preview
blank image
Preview, the Magazine of the Australian Society of Exploration Geophysicists, is also available online.

red arrow ASEG Extended Abstracts
blank image
ASEG Extended Abstracts, drawn from the ASEGĀ“s conferences, are also available online.


Article << Previous     |     Next >>   Contents Vol 38(3)

The Neogene tectonic history of the North West Shelf, Australia*

Myra Keep 1 4, Mathew Harrowfield 2, Warwick Crowe 3

1 School of Earth and Geographical Sciences, University of Western Australia, City, Nedlands, WA 6009, Australia.
2 Woodside Energy, 240 St. Georges Tce, Perth, WA 6009, Australia.
3 Fugro, Airborne Surveys Pty Ltd, 65 Brockway Rd, Floreat, WA 6014, Australia.
4 Corresponding author. Email: myra.keep@uwa.edu.au
PDF (13.2 MB) $25
 Export Citation


Neogene deformation along the northern margin of the Australian Plate changes character, from a collisional margin to the east in the Timor Sea to a passive margin further west in the Carnarvon Basin. Changes in the deformation style reflect changing regional stress. The continental collision currently underway in the vicinity of Timor Island (the Banda Orogen) influences Neogene deformation in the adjacent Timor Sea, but has little effect in the Carnarvon Basin. The location of deformation also changes, from outboard in the Timor Sea, to inboard in the Carnarvon Basin, with neotectonic events strongly controlled by basement boundaries in the Carnarvon Basin. We propose that Neogene deformation in the Timor Sea and Browse Basin can be explained by an elastic flexure model, whereas in the Carnarvon Basin Neogene deformation is strongly controlled by competency contrasts between basement and basinal rocks. We present a comprehensive model for Neogene deformation across the North West Shelf, based on seismic interpretation and mapping.

Keywords: North West Shelf, tectonics, Neogene, seismicity.

* *Presented at the Australian Earth Sciences Convention, June 2006, Melbourne.
Subscriber Login

Legal & Privacy | Contact Us | Help


© CSIRO 1996-2015