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Title: Seismic anisotropy of serpentinite from Val Malenco, Italy

Journal Article · · Journal of Geophysical Research. Solid Earth
DOI:https://doi.org/10.1002/2015JB012030· OSTI ID:1326092
 [1];  [2];  [2];  [3]
  1. Univ. Kiel (Germany). Inst. für Geowissenschaften
  2. Czech Academy of Sciences, Prague (Czech Republic). Inst. of Geology
  3. Univ. of California, Berkeley, CA (United States)

Serpentinites, deformed in mantle subduction zones, are thought to contribute significantly to seismic anisotropy of the upper mantle and have therefore been of great interest with studies on deformation, preferred orientation, and elastic properties. Here we present a combined study of a classical sample from Val Malenco, Italy, investigating the microstructure and texture with state-of-the art synchrotron X-ray and neutron diffraction methods and measuring ultrasonic velocities both with a multi-anvil apparatus and a novel instrument to measure 3-D velocities on spheres. Both, results from diffraction methods and velocity measurements are compared, discussing advantages and disadvantages. From spherical velocities, elastic tensor properties can be derived by inversion. Also from quantitative texture measurements, elastic properties can be modeled by self-consistent averaging. We report good agreement between the velocity and microstructural models is observed.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
National Science Foundation (NSF); USDOE
Grant/Contract Number:
EAR-1343908; FG02-05ER15637
OSTI ID:
1326092
Journal Information:
Journal of Geophysical Research. Solid Earth, Vol. 120, Issue 6; ISSN 2169-9313
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 13 works
Citation information provided by
Web of Science

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