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Type: Journal article
Title: A quantitative model for deposition of thin fluvial sand sheets
Author: Fisher, John A.
Waltham, David
Nichols, Gary J.
Krapf, Carmen Barbara Elke
Lang, Simon Christopher
Citation: Journal of the Geological Society, 2007; 164 (1):67-71
Publisher: Geological Society Publishing House
Issue Date: 2007
ISSN: 0016-7649
School/Discipline: Australian School of Petroleum
Statement of
John A. Fisher, David Waltham, Gary J. Nichols, Carmen B.E. Krapf & Simon C. Lang
Abstract: Sheetfloods are typically invoked as the mechanism responsible for the kilometre-scale transport of sand-sized sediment grains in shallow-gradient fluvial systems. This concept is based on the lateral extent of ancient thin, sheet sandstone deposits rather than on fluid dynamics, which has resulted in a loosely constrained model for sheetfloods. This study tested the conceptual mechanism by developing a depth-averaged, 2D computational fluid dynamics model. The model results compare well against observations from modern deposits at Lake Eyre to provide a quantitative, physically sound basis for sheetfloods that can be applied in ancient and modern settings to constrain otherwise qualitative interpretations.
DOI: 10.1144/0016-76492005-179
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Appears in Collections:Australian School of Petroleum publications

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