Preliminary analysis of gravity and aeromagnetic surveys of the Timber Mountain Area, southern Nevada

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Recent (1977 to 1978) gravity and aeromagnetic surveys of the Timber Mountain region, southern Nevada, have revealed new details of subsurface structure and lithology. The data strongly suggest that deformation caused by volcanic events has been accommodated along straight-line faults combining in such a fashion as to given a curvilinear appearance to regional structure. The magnetic data suggest that rock units in the central graben and along the southeast margin of Timber Mountain may have been altered, perhaps thermally, from their original state. The gravity data indicate that the south part of the Timber Mountain is underlain by relatively dense ... continued below

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143 p.

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Kane, M.F.; Webring, M.W. & Bhattacharyya, B.K. December 31, 1981.

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Description

Recent (1977 to 1978) gravity and aeromagnetic surveys of the Timber Mountain region, southern Nevada, have revealed new details of subsurface structure and lithology. The data strongly suggest that deformation caused by volcanic events has been accommodated along straight-line faults combining in such a fashion as to given a curvilinear appearance to regional structure. The magnetic data suggest that rock units in the central graben and along the southeast margin of Timber Mountain may have been altered, perhaps thermally, from their original state. The gravity data indicate that the south part of the Timber Mountain is underlain by relatively dense rock possibly intrusive rock, like that which crops out along its southeast side. The gravity data also suggest that the Silent Canyon caldera may extend considerably south of its presently indicated southern limit and may underlie much of the area of Timber Mountain. The moat areas appear to be more rectangular or triangular than annular in shape. The southern part of Timber Mountain caldera is separated from the Yucca Mountain area to the south by a triangular horst. The structural relations of the rock units making up the horst are complex. Several linear terrain features in the southern part of the caldera area are closely aligned with geophysical features, implying that the terrain features are fault-controlled.

Physical Description

143 p.

Notes

NTIS, PC A07/MF A01; OSTI as DE81029462

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  • Other Information: PBD: 1981

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  • Other: DE81029462
  • Report No.: DOE/ET/44802--T2
  • Grant Number: AI08-78ET44802
  • DOI: 10.2172/59628 | External Link
  • Office of Scientific & Technical Information Report Number: 59628
  • Archival Resource Key: ark:/67531/metadc693237

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • December 31, 1981

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • April 18, 2016, 6:47 p.m.

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Kane, M.F.; Webring, M.W. & Bhattacharyya, B.K. Preliminary analysis of gravity and aeromagnetic surveys of the Timber Mountain Area, southern Nevada, report, December 31, 1981; Denver, Colorado. (digital.library.unt.edu/ark:/67531/metadc693237/: accessed September 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.