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Retrospective on "Low-angle (denudation) faults, hinterland of the Sevier orogenic belt, eastern Nevada and western Utah" by Richard Lee Armstrong

Wernicke, Brian and Spencer, Jon (1999) Retrospective on "Low-angle (denudation) faults, hinterland of the Sevier orogenic belt, eastern Nevada and western Utah" by Richard Lee Armstrong. In: Classic Cordilleran Concepts: A View from California. Special Papers (Geological Society of America). No.338. Geological Society of America , Boulder, CO, pp. 357-362. ISBN 9780813723389.

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The 1960s and early 1970s brought sweeping new syntheses of the Cordilleran orogen as having developed primarily in response to the motions of oceanic plates to the west. The main conclusions of these syntheses were that the Cordilleran miogeocline resulted from Neoproterozoic continental rifting; magmatic systems are a signature of subducting slabs beneath the continent; and variably oblique plate convergence was responsible for coastwise shearing and progressive accretion of large, sometimes far-traveled crustal fragments onto the continental margin through most of Phanerozoic time. The novelty of these concepts is clear from the pre-1960s literature, which contains only rare allusions to ideas that might be considered similar. Afterward, the nature of the debate illustrated their profound acceptance. Are the magmas arc or backarc? Was there just one Neoproterozoic rifting event? How far had the westernmost accreted blocks traveled? That none of these comparatively second-order issues are resolved after some three decades of research is humbling testimony to the progress represented by the early syntheses.

Item Type:Book Section
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Wernicke, Brian0000-0002-7659-8358
Additional Information:© 1999 Geological Society of America. Accepted November 23, 1998.
Series Name:Special Papers (Geological Society of America)
Issue or Number:338
Record Number:CaltechAUTHORS:20170804-160532262
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:79825
Deposited By: Tony Diaz
Deposited On:05 Aug 2017 21:14
Last Modified:15 Nov 2021 17:50

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