第202回ジオダイナミクスセミナー
   Geodynamics Seminar

「50GPa領域までのパイロライトの密度変化と元素分配」
"Density and Fe-Mg partitioning changes in pyrolite to 50 GPa"

新名 亨
(GRC客員研究員, 東京大学大学院理学系研究科附属地殻化学実験施設特任研究員)
   主催 : 愛媛大学地球深部ダイナミクス研究センター
   日時 : 2008年5月9日(金)17:00〜
   場所 : 愛媛大学理学部講義棟 室

              

要 旨
  Pyrolite has been considered to present the Earth's mantle composition. Therefore, detailed studies of the phase relations and mineral physics properties in pyrolite over a wide pressure and temperature condition are required in order to understand the mineralogy and dynamics of the entire mantle. Many experimental investigations for pyrolite have been performed so far, however, the pressure conditions are limited up to 30 GPa. In this study, we have conducted in situ X-ray diffraction experiments to clarify the phase relations, Fe-Mg partitioning and density changes in pyrolite under the lower mantle conditions by using a combination of a multianvil apparatus and synchrotron radiation.






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                       E-mail  takut@sci.ehime-u.ac.jp