Evolution of Wyoming Craton Lithosphere: Xenolithic Constraints From the Bearpaw Mountains, Montana

这是一套产于蒙大拿州中北部贝尔帕山第三纪(50 Ma)碱性岩石中的下地壳和地幔包体的岩石学、地球化学性质和同位素(铅、锶、钕、氧)研究。这笔赠款将支持国际和平研究所的研究，将为一名研究生(约拉姆·梅罗兹先生)提供资金，并将为由国际和平研究所主管的地球科学同位素地球化学设施提供支助。捕虏体代表了怀俄明州克拉通岩石圈内各种级别的物质的独特采样，一直到至少100公里的深度。它们应该提供有关大陆深部地壳和其下伏的岩石圈地幔的化学演化、年龄和物理性质的信息。

This a petrologic, geochemical and isotopic (Pb, Sr, Nd & O) study of a comprehensive suite of lower crustal and mantle xenoliths that occur in Tertiary age (50 Ma) alkaline rocks of the Bearpaw Mountains, north central Montana. The grant will support research of the PI, will provide funding for a graduate student (Mr. Yoram Meroz) and will contribute to the support of the isotope geochemistry facility in Earth Sciences that is under the directorship of the PI. The xenoliths represent a unique sampling of material from a wide variety of levels within the Wyoming craton lithosphere down to a depth of at least 100km. They should provide information on the chemical evolution, age, and physical properties of deep continental crust and ther underlying lithospheric mantle.