Structural evolution of the Whipple and South mountains shear zones, southwestern United States.

G. A. Davis, G. S. Lister, S. J. Reynolds

Research output: Contribution to journalArticle

146 Scopus citations

Abstract

The Whipple and South mountains of the SW US have undergone a strikingly similar sequence of deformations. We suggest that detachment faults and associated zones of brecciation, cataclasis, and seismic slip were originally continuous downdip along the low-angle shear zones into mylonitic gneisses formed below or near the ductile-brittle transition. As the mylonites were drawn out from beneath the brittley extending upper plate, they were progressively uplifted above the ductile-brittle transition and were overprinted by successively more brittle structures.-from Authors

Original languageEnglish (US)
Pages (from-to)7-10
Number of pages4
JournalGeology
Volume14
Issue number1
DOIs
StatePublished - Jan 1 1986
Externally publishedYes

ASJC Scopus subject areas

  • Geology

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