Abstracts of Papers Presented at the Annual Meeting of The Japanese Association of Mineralogists, Petrologists and Economic Geologists
2005 Annual Meeting
Session ID : G1-03
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G1: Subduction factory
Simultaneous measurement of P and S wave velocity for Ichino-megata mafic xenoliths at high P-T conditions
*Soshi NishimotoMasahiro IshikawaMakoto ArimaTakeyoshi Yoshida
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Abstract

P-wave velocity (Vp) and S-wave velocity (Vs) of Ichino-megata mafic xenoliths, northeast (NE) Japan, were measured simultaneously under the subsolidus conditions. We obtain non-linea r velocity-temperature correlation for all rock studied. Significant Vp and Vs decreases at higher temperatures are probably attributed to thermal cracking and/or phase transition of plagioclas e and/or amphibole.

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© 2005 Japan Association of Mineralogical Sciences
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