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Implications of fault-plane solutions for Australian earthquakes on 4 July 1977, 6 May 1978 and 25 November 1978

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Created 13/01/2025

Updated 13/01/2025

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Fault-plane solutions determined for earthquakes in northwestern Australia (6 May 1978), central Australia (25 November 1978) and southeastern Australia (4 July 1977) each indicate nearly horizontal axes of maximum compressive stress. However, the azimuths of these axes are different from the azimuths of maximum stress axes determined previously for earthquakes in each area. This may be the result of a combination of warped stress fields at the junction of geologically different crustal blocks, and faulting in weakened zones of these blocks where the strike is oblique to the regional direction of maximum stress. Results in northwestern Australia can be explained by such effects.

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Title Implications of fault-plane solutions for Australian earthquakes on 4 July 1977, 6 May 1978 and 25 November 1978
Language eng
Licence Not Specified
Landing Page https://devweb.dga.links.com.au/data/dataset/70cb62a0-df22-4ba8-afae-70d2444a10ec
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
Data Portal Data.gov.au