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Detailed Reference Information |
Greenhalgh, S.A., Wright, C., Goleby, B. and Soleman, S. (1990). Seismic anisotropy in granulite facies rocks of the Arunta Block, central Australia. Geophysical Research Letters 17: doi: 10.1029/90GL01490. issn: 0094-8276. |
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Using travel times from explosive sources recorded at distances less than 36 km, evidence for P-wave anisotropy was obtained in an area of central Australia where granulite facies rocks from the lower crust are exposed at the surface; these rocks form the hanging wall of one of the most prominent ancient thrust structures seen anywhere in a continental interior. The azimuthal variation in seismic velocity for rocks at depths less than about 1 km is about 5%, and is comparable in magnitude to values reported for both continental and oceanic upper mantle. The maximum velocity (east-west) is parallel to the predominant strike direction of gneissic foliation observed in outcrop in the survey region, which was produced during granulite facies metamorphism at about 1,800 Ma. ¿ American Geophysical Union 1990 |
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Abstract |
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Keywords
Seismology, Body wave propagation, Mineralogy and Petrology, Metamorphic petrology, Information Related to Geographic Region, Australia |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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