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The effect of dilatancy on velocity anisotropy in Westerly graniteJacketed samples of Westerly granite were fractured at confining pressures up to 1 kbar, and compressional and horizontally as well as vertically polarized shear velocities were measured in orthogonal directions perpendicular to the compression axis. Changes occurring with increased strain are described, and the velocity data were analyzed by application of the Anderson et al (1974) approach. Observed and calculated velocities are found to be in good agreement, and the degree of dilatancy was determined from the differences between the strains measured perpendicularly to the compression axis and the estimated elastic strains in those directions.
Document ID
19780069189
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Soga, N.
(Kyoto University Kyoto, Japan)
Mizutani, H.
(Cooperative Institute for Research in Environmental Sciences, Boulder, Colo.; Tokyo, University Tokyo, Japan)
Spetzler, H.
(Tokyo Univ. Japan)
Martin, R. J., III
(Cooperative Institute for Research in Environmental Sciences Boulder, Colo., United States)
Date Acquired
August 9, 2013
Publication Date
September 10, 1978
Publication Information
Publication: Journal of Geophysical Research
Volume: 83
Subject Category
Geosciences (General)
Accession Number
78A53098
Funding Number(s)
CONTRACT_GRANT: USGS-14-08-0001-15256
CONTRACT_GRANT: NSG-9036
Distribution Limits
Public
Copyright
Other

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