Mesozoic and Cenozoic extension recorded by metamorphic rocks in the Funeral Mountains, California

J. D.R. Applegate, K. V. Hodges

Research output: Contribution to journalArticle

40 Scopus citations

Abstract

The Funeral Mountains metamorphic core complex contains early ductile structures related to Mesozoic compressional tectonics that have been overprinted by structures related to later extension. The core-bounding detachment system formed in late Miocene time, and ductile extensional fabrics in its footwall have been viewed as evidence of a higher-temperature stage in the same event. Integrated structural analysis and geochronology, however, indicate that ductile fabrics with a transport direction similar to the northwest direction of movement on the detachment are part of an older extensional event of Late Cretaceous age. This event produced mylonitic fabrics, a dominant foliation, and well-developed mineral and stretching lineations. Further extensional events are described. -from Authors

Original languageEnglish (US)
Pages (from-to)1063-1076
Number of pages14
JournalGeological Society of America Bulletin
Volume107
Issue number9
DOIs
StatePublished - Jan 1 1995
Externally publishedYes

ASJC Scopus subject areas

  • Geology

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