Petrologic and Geochemical Studies of a Layered Mantle Peridotite, Horoman, Japan - Implications for Melt Formationand Migration in the Upper Mantle

根据实地观察以及矿物学和 主要元素组成，M博士。Obata和日本同事 将分层的霍罗曼橄榄岩解释为“冻结” 上地幔熔体分离的例子。中 与Obata及其同事，F.弗雷（麻省理工学院）和 N.清水（WHOI）计划确定微量元素， 同位素（Sr，Nd，Pb）系统学研究 橄榄岩 熔体的形成和偏析过程是 主要的，但知之甚少的机制， 控制着地幔和地壳的演化 的 通过这种合作努力产生的综合数据应 帮助定义在霍罗曼创造分层的过程 橄榄岩，并显着提高熔体的认识 上地幔的形成、迁移和分凝作用。 这是一个与N博士合作的项目。伍兹霍尔的清水 海洋研究所。 弗雷德·弗雷博士 马萨诸塞州理工学院。

Based on field observations coupled with trends in mineralogy and major element composition, Dr. M. Obata and Japanese colleagues have interpreted the layered Horoman peridotite as a "frozen" example of melt segregation in the upper mantle. In a collaborative effort with Obata and colleagues, F. Frey (MIT) and N. Shimizu (WHOI) plan to determine the trace element and isotopic (Sr, Nd, Pb) systematics of contiguous layers in this peridotite. The processes of melt formation and segregation are major, but poorly understood, mechanisms that have been in controlling the evolution of the earth's mantle and crust. The comprehensive data generated by this collaborative effort should help to define the proceses that created layering in the Horoman peridotite, and significantly improve the understanding of melt formation, migration and segregation in the upper mantle. This is a joint project with Dr. N. Shimizu of the Woods Hole Oceanographic Institution. and Dr. Fred Frey of the Massachusetts Institute of Technology.