Rock seismic anisotropy of the low-velocity zone beneath the volcanic front in the mantle wedge

Details Rock seismic anisotropy of the low-velocity zone beneath the volcanic front in the mantle wedge Rock seismic anisotropy of the low-velocity zone beneath the volcanic front in the mantle wedge

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3612305m&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 12, CiteID L12305

Physics

5

Tectonophysics: Dynamics Of Lithosphere And Mantle: General (1213), Tectonophysics: Rheology: Mantle (8033), Tectonophysics: Subduction Zone Processes (1031, 3060, 3613, 8413)

Scientific paper

Peridotite xenoliths derived from the low velocity zone beneath the Avacha frontal volcano, Kamchatka, preserve a-axis slip fabrics, comparable with those in xenoliths from the back-arc region of the NE Japan. Although low-velocity zones are commonly attributed to zones of partially melted mantle, migration of the melt does not erase the existing olivine fabrics and related seismic anisotropies. These anisotropies may counteract the anisotropies associated with c-axis slip fabrics, if they exist, along the slab or in the high-pressure zone.

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