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https://hdl.handle.net/2440/42054
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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 Responsibility: | 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 |
Published version: | http://jgs.lyellcollection.org/cgi/content/abstract/164/1/67 |
Appears in Collections: | Australian School of Petroleum publications |
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