A Hf-Isotope Study of Mantle Materials

9526609 Salters这项研究将调查哪两个过程，解释高176 Hf/177 Hf在盐湖火山口，夏威夷，是最合理的。 除了Hf和Nd同位素分析外，P.I.将分析橄榄岩的矿物相，以确定其微量元素含量。 私家侦探打算使用现有数据或以其他方式获得所有捕虏体的全部主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二辉橄榄岩，包括LREE贫化捕虏体;来自基尔本洞、Potrillo Maar、San卡洛斯和科罗拉多高原的大陆橄榄岩; P.I.本文还将尝试对西伯利亚高原南部、维蒂姆和巴托伊地区的橄榄岩进行研究。豪里和纳特兰将分析来自南岛和马克萨斯的橄榄岩。 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空间和时间关系的了解。

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.