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Crustal extension and transform faulting in the southern Basin Range ProvinceThe author has identified the following significant results. Field reconnaissance and study of geologic literature guided by analysis of ERTS-1 MSS imagery have led to a hypothesis of tectonic control of Miocene volcanism, plutonism, and related mineralization in part of the Basin Range Province of southern Nevada and northwestern Arizona. The easterly trending right-lateral Las Vegas Shear Zone separates two volcanic provinces believed to represent areas of major east-west crustal extension. One volcanic province is aligned along the Colorado River south of the eastern termination of the Las Vegas Shear Zone; the second province is located north of the western termination of the shear zone in southern Nye County, Nevada. Geochronologic, geophysical, and structural evidence suggests that the Las Vegas Shear Zone may have formed in response to crustal extension in the two volcanic provinces in a manner similar to the formation of a ridge-ridge transform fault, as recognized in ocean floor tectonics.
Document ID
19740011833
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Liggett, M. A. (Argus Exploration Co. Los Angeles, CA, United States)
Childs, J. F. (Argus Exploration Co. Los Angeles, CA, United States)
Date Acquired
September 3, 2013
Publication Date
March 1, 1974
Subject Category
Geophysics
Report/Patent Number
NASA-CR-137256
E74-10411
Accession Number
74N19946
Funding Number(s)
CONTRACT_GRANT: NAS5-21809
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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