AnisEulerSC: A MATLAB program combined with MTEX for modeling the anisotropic seismic properties of a polycrystalline aggregate with microcracks using self-consistent approximation

Kim, Eun Young; Kim, Young‐Hee; Mainprice, David

doi:10.1016/j.cageo.2020.104589

Cited by 5 publications

(1 citation statement)

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“…Our modeling relies on the high‐pressure elasticity data set determined in this study with the CPO of antigorite determined by electron backscatter diffraction (EBSD) in a serpentinite from Val Malenco, Italy (Morales et al., 2018). Antigorite‐bearing rocks were treated as mixtures between olivine and antigorite, and their seismic properties were determined through a self‐consistent approach using the MATLAB software AnisEulerSC (Kim et al., 2020, see also: https://github.com/ekim1419/AnisEulerSC). Specifically, this code allows for the implementation of multi‐phase elasticity, grain shape constraints, and elastic inclusions.…”

Section: The Seismic Signature Of Serpentinized Slabsmentioning

confidence: 99%

Single‐Crystal Elasticity of Antigorite at High Pressures and Seismic Detection of Serpentinized Slabs

Satta

Morales

Criniti

et al. 2022

Geophysical Research Letters

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The subduction of serpentinized slabs is the dominant process to transport “water” into Earth's mantle, and plays a pivotal role for subduction dynamics. Antigorite, the most abundant serpentine mineral in subduction settings, may imprint a seismic signature on serpentinized slabs, making them seismically distinguishable from the dry, non‐serpentinized ones. However, the complete single‐crystal elasticity of antigorite has not been experimentally constrained at high pressures, hindering the use of seismological approaches to detect serpentinization in subducting slabs. Here, we report the full elastic stiffness tensor of antigorite by single‐crystal Brillouin spectroscopy and X‐ray diffraction up to 7.71(5) GPa. We use our results to model seismic properties of antigorite‐bearing rocks and show that their seismological detectability depends on the geometrical relation between seismic wave paths and foliation of serpentinized rocks. In particular, we demonstrate that seismic shear anisotropy shows low sensitivity to serpentinization for a range of relevant geometries.

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Section: The Seismic Signature Of Serpentinized Slabsmentioning

confidence: 99%