Acquisition of a High Precision Thermal Ionization Mass Spectrometer for Geochemical Research

EAR-0236741 DePao同位素地球化学领域对地球科学的广泛研究做出了重要贡献。仪器设备的进步是许多研究进展的关键组成部分。这个项目涉及购买一种新的仪器，以促进有助于我们了解地球深处的过程、气候变化和地球历史的研究。该仪器的新设计特点将使我们能够更精确地测量锶、钕、铯、铀、钙和铁等元素的同位素比率的微小差异。这些微小的同位素变化提供了有关地球过程的重要线索，这是其他方法无法获得的。新仪器将用于生物地球化学、地幔地球化学、玄武岩成岩作用、硅质岩浆系统、花岗岩成因、地壳生长和构造、地质年代学、海洋古化学以及地下水和深海孔隙流体地球化学等方面的地球化学研究。预计的研究包括火山岩和地下水中的U和Th同位素，锆石中的锶同位素，铁同位素，以及Os、Se和B等元素的负离子研究。新仪器将取代地球和行星科学部已有14年历史的多收集器仪器。加州大学将为此次收购贡献约一半的资金。智力优势：该研究所有27年的同位素地球化学研究经验，有广泛的出版记录，并培养了20多名博士生。该研究所有长期的设施支持记录，并有足够的研究资金来确保仪器得到很好的使用。更广泛的影响：拟议的仪器对加州大学伯克利分校的研究和教育基础设施构成了重大改进。在过去的14年里，20名研究生(8名女性)，8名博士后研究员(4名女性)，加上20多名来访者、本科生和合作者在将容纳新仪器的设施中进行研究。这项计划中的研究将通过提高我们对自然灾害和全球气候变化的认识来造福社会。

EAR-0236741DePaoloThe field of isotope geochemistry has contributed in important ways to a broad spectrum of studies in Earth Sciences. Advances in instrumentation are a key component of many research advances. This project involves the purchase of a new instrument to facilitate studies that will contribute to our understanding of deep earth processes, climate change, and earth history. The new design features of the instrument will allow us to more precisely measure small differences in isotope ratios for elements like Sr, Nd, Os, U, Ca and Fe. These small isotopic variations provide important clues about earth processes that cannot be obtained by other means. The new instrument will be used for geochemical investigations in biogeochemistry, mantle geochemistry, basalt petrogenesis, silicic magma systems, granite petrogenesis, crustal growth and structure, geochronology, ocean paleochemistry, and groundwater and deep sea pore fluid geochemistry. Anticipated studies include U and Th isotopes in volcanic rocks and groundwaters, Sr isotopes in zircon, Fe isotopes, and negative ion studies for elements like Os, Se and B. The new instrument will replace a 14-year-old multi-collector instrument in the Department of Earth and Planetary Science. The University of California will contribute about half of the funds for the purchase. Intellectual merit: The PI has 27 years of experience in isotope geochemical research, has an extensive record of publication, and has trained more than twenty Ph.D. students. The Institution has a long record of support of facilities, and there is sufficient research funding to ensure the instrumentation will be well used. Broader Impacts: The proposed instrumentation constitutes a significant improvement to the research and educational infrastructure at U.C. Berkeley. In the previous 14 years, 20 graduate students (8 women) 8 postdoctoral fellows (4 women), plus more than 20 visitors, undergraduates and collaborators have pursued research in the facility that will house the new instrument. The planned research will benefit society by improving our knowledge of natural hazards and global climate change.***