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Economic Geology of the Big Horn Mountains of West-Central Arizona

dc.contributor.authorAllen, G.B.
dc.date.accessioned2018-09-29T00:28:17Z
dc.date.available2018-09-29T00:28:17Z
dc.date.issued1985
dc.identifier.citationAllen, G.B., 1985, Economic Geology of the Big Horn Mountains of West-Central Arizona. Arizona Geological Survey Open File Report, OFR-85-17, 152 p.
dc.identifier.urihttp://hdl.handle.net/10150/629321
dc.descriptionThe Big Horn Mountains are a geologically complex range that extends over 500 square km in west-central Arizona. Three major lithologic terranes outcrop: (1) Proterozoic amphibolite, phyllite, schists, gneiss, and granite; (2) Mesozoic monzonite to diorite intrusives; and (3) Cenozoic mafic to silicic volcanic rocks and clastic rocks. The entire area is in the upper plate of a detachment fault and, consequently, contains many low- to high-angle normal faults. Each lithologic terrane has its associated mineral occurrences. The Big Horn district is exclusively hosted in the pre-Tertiary terrane. Most of its mineral occurrences are spatially related to the Late Cretaceous intrusive rocks. One occurrence, the Pump Mine, may be a metamorphic secretion deposit, and therefore, would be middle Proterozoic.
dc.language.isoen
dc.relation.ispartofseriesOFR-85-17
dc.relation.urlhttps://library.azgs.arizona.edu/item/AOFR-1552431180648-490
dc.rightsArizona Geological Survey. All rights reserved.
dc.subjectArizona Geological Survey Open File Reports
dc.subjectMesozoic
dc.subjectProterozoic
dc.subjectArizona
dc.subjectBig Horn Mountains
dc.subjectsilicic volcanic rocks
dc.subjectdiorite intrusives
dc.subjectmonzonite
dc.subjectgranite
dc.subjectgneiss
dc.subjectschists
dc.subjectphyllite
dc.subjectamphibolite
dc.subjectGeology
dc.subjectLate Cretaceous
dc.subjectCenozoic
dc.subjectMaricopa County
dc.subjectBig Horn mineral district
dc.titleEconomic Geology of the Big Horn Mountains of West-Central Arizona
csdgm.bounding.west-113.217
csdgm.bounding.east-113.045
csdgm.bounding.north33.6767
csdgm.bounding.south33.528
dc.description.collectioninformationDocuments in the AZGS Document Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact azgs-info@email.arizona.edu.
refterms.dateFOA2018-09-29T00:28:17Z


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