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Seismic structure and continuity of the Redbank Thrust Zone, central Australia

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Created 13/01/2025

Updated 13/01/2025

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The Redbank Thrust Zone in central Australia is a major Proterozoic Province boundary that was reactivated during the compressional Alice Springs Orogeny (300-400 Ma). To investigate its three-dimensional structure, three deep seismic reflection profiles were recorded over this boundary in 1985. This paper presents new seismic results that provide clear supporting evidence that the Redbank Thrust Zone has a similar geometry in two crustal sections spaced 70 km apart. In both seismic dip-sections the Redbank Thrust Zone is a planar, sub-parallel band of reflections that dip to the north at 35-40° and extends to depths in excess of 20 km. This similarity indicates a definite three-dimensional geometry, and, in-conjunction with existing structural data, gravity and teleseismic data suggests that the Redbank Thrust Zone is a major boundary, of considerable lateral magnitude, separating crustal blocks with different geological composition and structure and reinforces earlier interpretations that the Redbank Thrust Zone represents a crust-cutting thick-skinned feature.

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Title Seismic structure and continuity of the Redbank Thrust Zone, central Australia
Language eng
Licence Not Specified
Landing Page https://devweb.dga.links.com.au/data/dataset/36cbc425-c866-4e7a-98bb-ab02c57a4b3b
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
Data Portal Data.gov.au