A Hf-Isotope Study of Mantle Materials

这项研究将调查解释夏威夷盐湖火山口高176Hf/177Hf的两个过程中哪一个是最合理的。除了Hf和Nd同位素分析外，P.I.还将分析橄榄岩的矿物相以测定其微量元素含量。私家侦探计划要么使用现有数据，要么对所有捕虏体进行全面的主要元素和微量元素分析。拟分析的橄榄岩样品包括：一套夏威夷无水尖晶石橄榄岩，含贫LREE捕虏体；Kilbourne Hole、Potrillo Maar、San Carlos和Colorado Plateau的大陆橄榄岩；调查团还将设法开始对西伯利亚高原南部、维提姆和巴托伊地区的橄榄岩进行研究；私家侦探将与E. Hauri和J. Natland合作，分析来自南岛和马克萨斯群岛的橄榄岩。此外，P.I.将分析有限数量的MORB中的Pb或Hf，以确定MORB中Hf和Pb同位素之间是否存在相关性。获得上述分析应该增加我们对地幔内不同成分之间的时空关系的认识。

9526609 Salters The research will investigate which of the two processes that explains the high 176Hf/177Hf at Salt Lake Crater, Hawaii, is the most plausible. In addition to the Hf and Nd isotope analyses, the P.I. will analyze the mineral phases of the peridotites for their trace element content. The P.I. intends to either use existing data or otherwise obtain full major and trace element analyses on all the xenoliths. The specific peridotite samples that are proposed to be analyzed include: set of Hawaiian anhydrous spinel lherzolites, including LREE depleted xenoliths; continental peridotites from Kilbourne Hole, Potrillo Maar, San Carlos, and the Colorado Plateau; the P.I. will also try to initiate a study on the peridotites from the southern part of the Siberian Plateau, Vitim and Bartoy localities; in collaboration with E. Hauri and J. Natland the P.I will analyze peridotites from the Austral Island and the Marquesas. In Addition the P.I. will analyze a limited number of MORB for either Pb or Hf to determine whether a correlation exist between Hf and Pb isotopes in MORB. Obtaining the above analyses should increase our knowledge of the space and time relationships between the different components within the mantle.