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Elasticity of ultrabasic rocks

Christensen, Nikolas I.·1966·Journal of Geophysical Research
DOI 10.1029/jz071i024p05921
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Abstract

Ultrasonic measurements of compressional and shear wave velocities are reported for peridotite, dunite, partially serpentinized dunite and peridotite, and serpentinite at hydrostatic pressures to 10 kb. Compressional wave velocities for monomineralic aggregates of olivine, pyroxene, and serpentine approximate 8.54, 7.93, and 5.10 km/sec, respectively. Shear wave velocities for similar aggregates are 4.78, 4.65, and 2.35 km/sec. The relationships between velocity and mineralogy are reported for rocks containing olivine, pyroxene, and serpentine. Young's modulus, Lamé's constant, the bulk modulus, and the shear modulus of peridotites and dunites decrease rapidly with serpentinization. Poisson's ratio and compressibility increase with serpentinization. The effect of olivine orientation on velocity is discussed and found to account for compressional wave anisotropy. High velocities correspond to propagation parallel to maximum concentrations of olivine a axes, and low velocities are characteristic of propagation parallel to b axes.

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Metadata

Authors
Christensen, N. I.
Venue
Journal of Geophysical Research
Publisher
American Geophysical Union (AGU)
Published
1966-12-15
Volume
71
Issue
24
Pages
5921-5931
ISSN
0148-0227 (ISSN-L)
DOI
10.1029/jz071i024p05921
OpenAlex
W2165258323
Cited by
466
References
0
FWCI
4.66
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Elasticity of ultrabasic rocks. https://app.cochat.ai/papers/10.1029/jz071i024p05921
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Christensen, N. I. (1966). Elasticity of ultrabasic rocks. Journal of Geophysical Research. https://doi.org/10.1029/jz071i024p05921

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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.