Accession Number:

AD0645938

Title:

SHEAR DEFORMATION OF NEVADA TEST SITE ROCKS: TESTS TO 60KB AND 900C.

Descriptive Note:

Environmental research papers,

Corporate Author:

AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s):

• Riecker,R. E.
• Rooney,T. P.

Report Date:

1966-10-01

Pagination or Media Count:

29.0

Abstract:

Six Nevada Test Site rocks were sheared in a large opposed anvil shear press to maximum pressures of 60 kb and maximum temperatures of 900C. The torsion tests on tuff, dolomite, shale, granodiorite, and quartzite were designed to determine shear strength and internal friction data for underground test media. The most significant result is weakening of the tuff caused by dehydration of associated zeolite alteration products. This weakening mechanism might occur near the shot point of nuclear tests in tuff where temperatures rise above the dehydration temperatures for zeolite. Author

Descriptors:

• *ROCK
• SHEAR STRESSES
• DEFORMATION
• NEVADA
• GEOPHYSICS
• MECHANICAL PROPERTIES
• SHALE
• TEMPERATURE
• PRESSURE

Subject Categories:

• Geology, Geochemistry and Mineralogy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE