COLLABORATIVE RESEARCH: Be Isotope and B-Li-Be Systematics in Subduction-Related Lavas

P.I.s计划进一步发展Be-B系统，并将这些示踪剂与来自中美洲、安第斯山脉、俾斯麦、千岛群岛-堪察加、阿留申、伊奥利亚、跨墨西哥、小安的列斯群岛和马里亚纳火山弧的熔岩的选定微量元素比率和放射性成因同位素组成进行对比。这些研究旨在阐明1)地壳、地幔和俯冲储层的性质；2)这些储层相互作用的过程；3)俯冲再循环对地壳和地幔地球化学收支的影响。be的测量将在宾夕法尼亚大学进行，化学分离将在DTM进行。K, Rb, Cs, Ba, Sr， U， Th和Pb的同位素稀释测量和放射性成因同位素测定将在DTM进行，以及be， Li和一些B浓度测量。高场强元素、稀土元素和大部分B浓度测量的测定将通过莱斯大学进行。ICP主要和微量元素的表征将在DTM和Rice进行。

The P.I.s plan further development of the Be-B systematics and correlation of these tracers with selected trace element ratios and radiogenic isotope compositions for lavas from the Central America, ANdes, Bismarck, Kurile-Kamchatka, Aleutian, Aeolian, Trans-Mexico, Lesser Antilles and Mariana volcanic arcs. These studies are intended to elucidate 1) the nature of crust, mantle and subducted reservoirs, 2) the process by which these reservoirs interact, and 3) the effects of subduction recycling on geochemical budgets in the crust and mantle. 10Be measurements will be made at the University of Pennsylvania, with chemical separations made at DTM. K, Rb, Cs, Ba, Sr, U, Th and Pb measurements by isotope dilution and radiogenic isotope determinations will be made at DTM, along with Be, Li and some B concentration measurements. Determinations of high field strength elements, rare earth elements and the majority of B concentration measurements will be handled through Rice University. ICP major and trace element characterizations will be carried out at DTM and Rice.