Ediacaran intracontinental channel flow
Date
2009
Authors
Raimondo, T.
Collins, A.
Hand, M.
Walker-Hallam, A.
Smithies, H.
Evins, P.
Howard, H.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Geology, 2009; 37(4):291-294
Statement of Responsibility
Tom Raimondo, Alan S. Collins, Martin Hand, Althea Walker-Hallam, R. Hugh Smithies, Paul M. Evins and Heather M. Howard
Conference Name
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.
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Description
© 2009 Geological Society of America
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Copyright 2009 The Geological Society of America