Articles | Volume 11, issue 2
Research article
30 Apr 2020
Research article |  | 30 Apr 2020

Surface deformation relating to the 2018 Lake Muir earthquake sequence, southwest Western Australia: new insight into stable continental region earthquakes

Dan J. Clark, Sarah Brennand, Gregory Brenn, Matthew C. Garthwaite, Jesse Dimech, Trevor I. Allen, and Sean Standen

Related subject area

Subject area: Tectonic plate interactions, magma genesis, and lithosphere deformation at all scales | Editorial team: Structural geology and tectonics, paleoseismology, rock physics, experimental deformation | Discipline: Tectonics
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Cited articles

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Adams, J., Percival, J., Wetmiller, R., Drysdale, J., and Robertson, P.: Geological controls on the 1989 Ungava surface rupture a preliminary interpretation, Geological Survey of Canada Paper, 92C, 147155,, 1992. 
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Allen, T. I.: Seismic hazard estimation in stable continental regions: does PSHA meet the needs for modern engineering design in Australia?, Bulletin of the New Zealand Society for Earthquake Engineering, 53, 22–36, 2020. 
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Short summary
A magnitude 5.3 reverse-faulting earthquake in September 2018 near Lake Muir in southwest Western Australia was followed after 2 months by a collocated magnitude 5.2 strike-slip event. The first event produced a ~ 5 km long and up to 0.5 m high west-facing surface rupture, and the second triggered event deformed but did not rupture the surface. The earthquake sequence was the ninth to have produced surface rupture in Australia. None of these show evidence for prior Quaternary surface rupture.