Long-term behaviour of Australian stable continental region (SCR) faults

The present-day stress field of Australia: New release of the Australian Stress Map

“…Up to now, most estimates of stress regime suggest strike-slip and reverse present-day tectonic regime through the continent, aside from in some passive margin sedimentary basins, which is quiet consistent with neotectonics studies (e.g. Clark et al, 2012;Hillis et al, 2008).…”

“…Whilst all other major plates display first-order stress patterns that are parallel to absolute plate-motion, the Indo-Australian plate shows a highly varying regional stress pattern that has no correlation with Australia's N-NE absolute plate motion (Richardson 1992;Zoback 1992;Hillis et al 1997Hillis et al , 2008Hillis and Reynolds 2003;Reynolds et al 2003). The present-day stress pattern of Australia is important in several disciplines including geodynamics (Richardson, 1992); neotectonics (Clark et al, 2012;Hillis et al, 2008); geomechanical characterization of petroleum basins (Tingay et al 2005); earthquake hazard and mine safety (Sandiford et al 2004); reservoir seismicity (Hillis 2000); and unconventional hydrocarbon and geothermal energy production (Bell, 2006).…”

Sedimentology, structure and age estimate of five continental slope submarine landslides, eastern Australia

“…those that rupture on an individual fault source) is not well-constrained and estimates range over three orders of magnitude from one moment magnitude (Mw) >7.0 event every ten to twenty thousand years to one every million years (i.e. a range in recurrence interval of 10 ka to 10 3 ka) (see Burbidge, 2012;Clark, 2010;Clark, McPherson & Van Dissen, 2012;Leonard, 2008).…”

The impact of earthquake cycle variability on neotectonic and paleoseismic slip rate estimates

“…For older Quaternary markers that have experienced tens to hundreds of major earthquakes, the effects will be minor, and for bedrock geologic markers with kilometers of displacement, the earthquake cycle is likely not worth accounting for. However, due to progressive erosion of geologic markers and the challenge of dating many late Pliocene to early Quaternary units (which are too old for radiocarbon and many cosmogenic nuclide systems), geologists often have no choice but to choose late Pleistocene to Holocene markers to date, and these units may also be more desirable targets if 10 the scientists are primarily concerned with estimating the contemporary slip rate on a fault with a slip rate that may vary over Quaternary timescales (Rittase et al, 2014;Zinke et al, 2018, e.g.). For slow-moving faults, the slip either long waiting to be released, or recently released, may represent a sizeable fraction of the measured fault offset.…”