Presentation Information

[T3-P-5]Selective heat and fluid focusing into ultramafic rocks during high-temperature dehydration: Evidence from a contact metamorphic aureole

*Kaho NOBUAHRA1, Hiroshi MORI1, Yurie TSUKISHIMA1, Takayoshi NAGAYA2, Ken YAMAOKA3, Koichiro FUJIMOTO4, Takafumi SHINYA1, Yuho HAYAKAWA5, Tetsuya TOKIWA1 (1. Shinshu University, 2. Waseda University, 3. GSJ, AIST, 4. Tokyo Gakugei University, 5. Chuo Kaihatsu Corporation)
【ハイライト講演】  沈み込み帯深部における超苦鉄質岩の脱水反応は,流体・熱・物質輸送を支配する重要なプロセスであるが脱水時の構造が保存された天然の例は稀である.本研究では,接触変成帯を天然の加熱実験場とみなし,稠密な鉱物・化学・密度分析から,脱水反応に伴って熱と流体が集中する稀有な描像が捉えられている. ※ハイライト講演とは...

Keywords:

subduction zone,ultramafic rocks,Sanbagawa metamorphic belt,contact metamorphism,metamorphic reaction,mass transfer,fluid,heat advection

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