著者
Kenta YOSHIDA Sota NIKI Hikaru SAWADA Ryosuke OYANAGI
出版者
Japan Association of Mineralogical Sciences
雑誌
Journal of Mineralogical and Petrological Sciences (ISSN:13456296)
巻号頁・発行日
pp.200730, (Released:2020-12-08)

Datolite [CaBSiO4(OH)] was discovered in an eclogite–facies calcite marble collected from the Eastern Iratsu body in the Sanbagawa metamorphic belt of central Shikoku. The marble was composed of calcite, diopside, and garnet that contained inclusions of omphacite. Enclosed in the marble is a pod composed mainly of quartz, with subordinate calcite, diopside, and garnet that has inclusions of datolite. The formation conditions of the datolite were estimated on the basis of mineral assemblage and the Raman elastic geobarometer to be approximately 400–650 °C and 0.8–1.3 GPa, which coincide with the conditions of the eclogite juxtaposition with the non–eclogite units in the Besshi district. Our study records the highest pressure–temperature conditions as the metamorphic datolite formation. Our findings provide evidence for the occurrence of B–rich fluid infiltration during the juxtaposition of eclogite unit with the non–eclogite unit in the Besshi district.

言及状況

外部データベース (DOI)

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楽しみだった論文、遂に早期公開。四国三波川帯産ダトー石。 Yoshida, K., Niki, S., Sawada, H., and Oyanagi, R. (2020) Discovery of datolite in a high–pressure marble from the Sanbagawa metamorphic belt: Indication of B–rich fluid activity. JMPS, Adv. Pub. https://t.co/RxeA5oAwMA
新作論文がオンライン公開になりました.この論文の売りはJMPSなのに表がジャギって無いことです(これは人類にとっては小さな一歩だけど極東島国の研究者にとっては大きな一歩だ). 論文の中身はホウ素を含む変な鉱物の形成条件見積もりです. #新刊出ました https://t.co/UtYxhkDnOg https://t.co/10EhSEeeNG

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