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Northward laramide thrusting in the quitovac region, northwestern sonora, mexico: Implications for the juxtaposition of paleoproterozoic basement blocks and the mojave-sonora megashear hypothesis

Special Paper of the Geological Society of America

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, , , , , and
DOI: 10.1130/0-8137-2393-0.631

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Abstract

Restoration of 12%-30% Basin and Range extension allows direct interpretation of ductile fabrics associated with a stack of Laramide thrust faults in the Quito- vac region in northwestern Sonora. The inferred direction of displacement of these thrusts varies gradually from N63??W to N23??E and is interpreted to represent a clockwise rotation of the direction of Laramide thrusting through time. The thrust faults represent a piggy-back sequence of thrusting propagating north, toward the foreland. The average direction and sense of displacement of the thrusts is N18??W, and the cumulative 45 km of estimated northward-directed displacement corresponds to ???86% of shortening. ?? 2005 Geological Society of America.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Northward laramide thrusting in the quitovac region, northwestern sonora, mexico: Implications for the juxtaposition of paleoproterozoic basement blocks and the mojave-sonora megashear hypothesis
Series title:
Special Paper of the Geological Society of America
DOI:
10.1130/0-8137-2393-0.631
Issue:
393
Year Published:
2005
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Special Paper of the Geological Society of America
First page:
631
Last page:
669