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Shocked basalt from Lonar Impact Crater, India, and experimental analoguesSamples of Lonar basalts were experimentally shocked in vacuum to pressures between 200 and 650 kbar by a 20 mm, high-velocity gun. Plagioclase and palagonite in experimentally shocked samples show deformation similar to that in the naturally shocked rocks, but pyroxene does not show optically resolvable edge melting. It is estimated that pressures in excess of 800-1000 kbar are required for the formation of totally shock-melted rocks from nonporous basalt.
Document ID
19770051881
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Kieffer, S. W.
(California Univ. Los Angeles, CA, United States)
Schaal, R. B.
(California, University Los Angeles, Calif., United States)
Gibbons, R.
(California Univ. Los Angeles, CA, United States)
Horz, F.
(NASA Johnson Space Center Houston, Tex., United States)
Milton, D. J.
(U.S. Geological Survey Menlo Park, Calif., United States)
Dube, A.
(Geological Survey of India Calcutta, India)
Date Acquired
August 9, 2013
Publication Date
January 1, 1976
Subject Category
Earth Resources And Remote Sensing
Meeting Information
Meeting: Lunar Science Conference
Location: Houston, TX
Start Date: March 15, 1976
End Date: March 19, 1976
Accession Number
77A34733
Funding Number(s)
CONTRACT_GRANT: NSG-7052
CONTRACT_GRANT: NASA ORDER W-13330
Distribution Limits
Public
Copyright
Other

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