CONTROL OF MINERALIZATION BY MESOZOIC AND CENOZOIC LOW-ANGLE STRUCTURES IN WEST-CENTRAL ARIZONA.

J. E. Spencer, Stephen Reynolds, J. W. Welty

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Mesozoic and Tertiary mineral deposits in west-central Arizona are commonly associated with Mesozoic thrust faults and Tertiary detachment faults, respectively. Quartz-kyanite rocks and pyritic quartz-sericite schists with local anomalous gold are the product of probable Jurassic argillic alteration of Jurassic volcanic, sedimentary, and plutonic rocks followed by Cretaceous thrust burial and associated metamorphism. Slivers and sheets of Paleozoic carbonates along Mesozoic thrust faults were locally sites of syn- and post-thrust mineralization. Widespread brecciation along Tertiary detachment faults resulted in increased permeability along fault zones. Elevated thermal gradients also resulted from detachment faulting and apparently caused convective aqueous-fluid circulation along detachment faults and associated Fe plus Cu plus or minus Au mineralization.

Original languageEnglish (US)
Title of host publicationPreprint - Society of Mining Engineers of AIME
EditorsS.J. Grayson, D.A. Smith
Place of PublicationLittleton, CO, USA
PublisherSoc of Mining Engineers of AIME
StatePublished - 1988
Externally publishedYes
EventUnknown conference - Luxembourg, Luxemb
Duration: Oct 2 1986Oct 3 1986

Other

OtherUnknown conference
CityLuxembourg, Luxemb
Period10/2/8610/3/86

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Spencer, J. E., Reynolds, S., & Welty, J. W. (1988). CONTROL OF MINERALIZATION BY MESOZOIC AND CENOZOIC LOW-ANGLE STRUCTURES IN WEST-CENTRAL ARIZONA. In S. J. Grayson, & D. A. Smith (Eds.), Preprint - Society of Mining Engineers of AIME Soc of Mining Engineers of AIME.