Journal article

Reversible subsidence on the North West Shelf of Australia

Michael Gurnis, Michelle Kominz, Stephen J Gallagher

Earth and Planetary Science Letters | ELSEVIER | Published : 2020

Abstract

The Northwest Shelf (NWS) of Australia is characterized by offshore basins associated with Permian and Jurassic rifting and was only slowly subsiding by the Neogene. International Ocean Discovery Program (IODP) Expedition 356 targeted this region by coring four sites in the Northern Carnarvon and Roebuck Basins and two sites in the Perth Basin to the south on the Australian western margin. We use detailed lithological, physical property and age data with paleobathymetric interpretations, to infer tectonic subsidence apparently confined to the NWS that reverses (uplifts) with about the same amplitude and rate as an earlier subsidence event. About 300 m of tectonic subsidence occurred over one..

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University of Melbourne Researchers

Grants

Awarded by NSF


Awarded by ARC Basins Genesis Hub


Funding Acknowledgements

USSSP supported the participation of MG and MK on IODP Expedition 356 as well as with post expedition awards. MG was also supported by the NSF through EAR-1645775. Funding to SJG was provided by the Australian IODP office and the ARC Basins Genesis Hub (IH130200012).