Reconstructing late Quaternary fault slip rates along the Cadell Fault

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The Cadell Fault is one of the most prominent intraplate fault systems in southeastern Australia. Recent palaeoseismic work has constrained Holocene slip but pre-Holocene slip rates remain poorly resolved. We present new luminescence and cosmogenic ages from offset fluvial terraces that extend the slip record into the late Pleistocene, providing important context for seismic hazard models that currently rely on short observation windows.

Results suggest a long-term slip rate consistent with the published Holocene estimates, with no evidence for an order-of-magnitude change across the Pleistocene–Holocene transition. We discuss the implications for hazard estimation in stable continental regions, including the treatment of fault slip in the National Seismic Hazard Assessment.