Open AccessConstraint of lattice‐preferred orientation (LPO) on Vp anisotropy of amphibole‐rich rocks
Author(s) -
Kitamura Keigo
Publication year - 2006
Publication title -
geophysical journal international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0956-540X
DOI - 10.1111/j.1365-246x.2006.02961.x
Subject(s) - amphibole , biotite , anisotropy , geology , lattice (music) , geochemistry , mineralogy , condensed matter physics , physics , optics , paleontology , quartz , acoustics
SUMMARY The Vp anisotropies of two amphibole‐rich rocks and two biotite–amphibole‐rich rocks were measured under high‐pressure conditions (up to 1.0 GPa), and calculated based on the physical properties and lattice‐preferred orientation (LPO) of amphibole and biotite. The results of these studies clearly demonstrated the strong effects of the LPO of amphibole and biotite on Vp anisotropies. Previous studies pointed out the importance of [001] of amphibole and (001) of biotite for Vp anisotropy. In addition to these axes and poles, (100) of amphibole strongly affected the Vp anisotropy of the sample rocks.