Investigations of the relations among residual strain, fabric, fracture and ultrasonic attenuation and velocity in rocks

Journal Article · Sat Jun 01 04:00:00 EDT 1974 · Int. J. Rock Mech. Min. Sci.; (United States)

DOI:https://doi.org/10.1016/0148-9062(74)90129-6· OSTI ID:6575764

Friedman, M; Bur, T R

Residual strain measured by X-ray diffractometry, fabric, and ultrasonic velocity and attenuation in blocks of dry Charcoal Granite, Sioux Quartzite, and Berea Sandstone are investigated to determine their causes and effects and the degree to which each can be used to predict fracture anisotropy. The statistical trends of tensile fractures, induced by point-loading oriented disks, are reliably predicted from ultrasonic data in all 3 rocks; the attenuation data reflect some not sensitive to veolocty. In the granite, the fractures are compatible geometrically and probably genetically with the orientations and magnitudes of the residual strains (i.e., prestress) and with microfractures and exsolution lamellae. Fractures in the quartzite and sandstone are primarily oriented parallel to bedding. Those not parallel to bedding in the quartzite are compatible with the residual strains. (13 refs.)

• Research Organization: Texas A and M Univ
• OSTI ID: 6575764
• Journal Information: Int. J. Rock Mech. Min. Sci.; (United States), Journal Name: Int. J. Rock Mech. Min. Sci.; (United States) Vol. 11:6; ISSN IJRMA
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580300* -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
ATTENUATION
COHERENT SCATTERING
COMMINUTION
DIFFRACTION
FRACTURING
GRANITES
IGNEOUS ROCKS
MECHANICS
METAMORPHIC ROCKS
PLUTONIC ROCKS
QUARTZITES
ROCK MECHANICS
ROCKS
SANDSTONES
SCATTERING
SEDIMENTARY ROCKS
SOUND WAVES
STRAINS
ULTRASONIC WAVES
VELOCITY
X-RAY DIFFRACTION