COLLABORATIVE RESEARCH: Petrologic & Geochemical Studies of a Layered Mantle Peridotite, Horoman, Japan: Implications for Melt Formation and Migration in the Upper Mantle

根据野外观察，结合矿物学和主要元素组成的趋势，M.Obata博士和日本的同事将层状霍罗曼橄榄岩解释为上地幔熔体分离的“冻结”例子。在与Obata及其同事的合作中，F.Frey(麻省理工学院)和N.Shimizu(WHOI)计划确定该橄榄岩中连续层的微量元素和同位素(锶、钕、铅)系统学。熔体形成和分离的过程是控制地幔和地壳演化的主要机制，但人们对这些机制知之甚少。这种合作产生的综合数据应该有助于确定在霍罗曼橄榄岩中形成分层的过程，并显著提高对熔体形成、迁移和上地幔分离的理解。这是与伍兹霍尔海洋研究所的清水博士合作的项目。麻省理工学院的弗雷德·弗雷博士。

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.