サトウ　ヒロシ   SATO Hiroshi   佐藤 暢    所属   専修大学  経営学部    職種   教授
発表年月日	2012/05
発表テーマ	南インド洋コンラッドライズから採取された火成岩類の岩石学
会議名	日本地球惑星科学連合2012年大会
主催者	日本地球惑星科学連合
学会区分	全国学会
発表形式	口頭（一般）
単独共同区分	共同
開催地名	幕張メッセ(千葉)
発表者・共同発表者	佐藤　暢、野木　義史、石塚　英男、佐藤　太一
概要	The Conrad rise is considered to be one of the Cretaceous Large Igneous Provinces and/or of hotspots at the southern Indian ocean. However, several plate reconstruction models denied the hotpot origin because hot spot tracks associated with the Conrad rise are not clearly established. Furthermore, only one petrological investigation had been performed by Borisova et al. (1996), which reported chemical compositions including major and minor compositions similar to those from the Keruguelen plateau. They concluded that the Conrad rise is hotspot of origin. However, no lines of direct evidence are revealed to explain the hotspot or mantle plume of origin.We had a research cruise KH-10-7 (R/V Hakuho-maru), and we dredged igneous, granitic and metamorphic rocks from the Ob and Lena seamounts, the Conrad rise. 発表要旨集名日本地球惑星科学連合2012年大会 要旨集発刊年月201205