Ultrasonic propagation in Solenhofen limestone at high pressures. [5 and 10 MHz, up to 25 kbar]
The phase transitions in pure calcite which is the main constituent of limestone, occur at 14.5 kbar (calcite I-II) and 17.4 kbar (calcite II-III). To characterize the effect of the II-III transition on sound propagation in limestone, measurements were made to 25 kbar on Solenhofen limestone. Both longitudinal and transverse velocities were measured over the full pressure range; thus, the measurements represent the first study of the effect of the II-III transition on shear wave propagation under conditions of hydrostatic pressure. Data were obtained on both jacketed and unjacketed samples at 5 and 10 MHz, respectively. The results on the unjacketed samples are emphasized because the anomalies due to the phase transitions are sharper and more pronounced in this case. Anomalies were noted for both transverse and longitudinal waves. 3 figures. (RWR)
- Research Organization:
- Sandia Labs., Albuquerque, NM
- OSTI ID:
- 5431426
- Journal Information:
- Geophysics; (United States), Journal Name: Geophysics; (United States) Vol. 43:5; ISSN GPYSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
580300* -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
CARBONATE ROCKS
DATA
DATA FORMS
EXPERIMENTAL DATA
FREQUENCY RANGE
INFORMATION
ISOLATED VALUES
LIMESTONE
MHZ RANGE
MHZ RANGE 01-100
NUMERICAL DATA
PHASE TRANSFORMATIONS
RESERVOIR ROCK
ROCKS
SEDIMENTARY ROCKS
SOUND WAVES
TRANSMISSION
ULTRASONIC WAVES
VERY HIGH PRESSURE
WAVE PROPAGATION