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Type: Journal article
Title: Ediacaran intracontinental channel flow
Author: Raimondo, T.
Collins, A.
Hand, M.
Walker-Hallam, A.
Smithies, H.
Evins, P.
Howard, H.
Citation: Geology, 2009; 37(4):291-294
Publisher: Geological Soc America Inc
Issue Date: 2009
ISSN: 0091-7613
Statement of
Tom Raimondo, Alan S. Collins, Martin Hand, Althea Walker-Hallam, R. Hugh Smithies, Paul M. Evins and Heather M. Howard
Abstract: Migmatitic lower-crustal rocks in the Ediacaran intracontinental Petermann orogen, central Australia, are bounded by regional-scale, low-angle shear fabrics that record opposing shear senses. New sensitive high-resolution ion microprobe (SHRIMP) titanite geochronology suggests that the contrasting shear systems developed synchronously. We argue that the macro scopic structural and metamorphic architecture satisfies the diagnostic criteria outlined by recently proposed channel flow models, and thus the remarkably well-preserved Petermann orogen is potentially an example of ancient intracontinental channel flow.
Description: © 2009 Geological Society of America
RMID: 0020090406
DOI: 10.1130/G25452A.1
Appears in Collections:Earth and Environmental Sciences publications
Environment Institute publications

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