Journal article

Bedrock erosion and relief production in the northern Flinders Ranges, Australia

Mark Quigley, Mike Sandiford, Keith Fifield, Abaz Alimanovic

EARTH SURFACE PROCESSES AND LANDFORMS | WILEY | Published : 2007

Abstract

Cosmogenic 10Be concentrations in exposed bedrock surfaces and alluvial sediment in the northern Flinders Ranges reveal surprisingly high erosion rates for a supposedly ancient and stable landscape. Bedrock erosion rates increase with decreasing elevation in the Yudnamutana Catchment, from summit surfaces (13.96 ± 1.29 and 14.38 ± 1.40 m Myr-1), to hillslopes (17.61 ± 2.21 to 29.24 ± 4.38 m Myr-1), to valley bottoms (53.19 ± 7.26 to 227.95 ± 21.39 m Myr-1), indicating late Quaternary increases to topographic relief. Minimum cliff retreat rates (9.30 ± 3.60 to 24.54 ± 8.53 m Myr-1) indicate that even the most resistant parts of cliff faces have undergone significant late Quaternary erosion. H..

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