Aquisition of a Multi-Collector Thermal Ionization Mass Spectrometer at the Scripps Institution of Oceanography

9528787麦克杜格尔这笔赠款提供301,000美元，作为购买具有高丰度灵敏度、多收集器和负离子能力的新型热电离质谱仪(TIMS)的部分费用。斯克里普斯海洋研究所将提供总设备采购成本的40%。这一仪器将允许这些研究人员继续目前的工作，应用同位素地球化学，并扩展到需要质量分辨率和负离子能力的系统，而他们目前的单一收集器TIM并不适合这些系统。这些增强的能力包括对古构造、气候、风化和海洋热液活动有影响的海洋沉积物的Re/Os同位素系统学，以及火成岩中的U/Th系列同位素，它们可用于深入了解岩浆形成和运移的时间尺度和过程，以及大洋中脊玄武岩、岛弧安山岩和其他构造背景岩石的源质化学成分。***

9528787 Macdougall This grant provides $301,000 as partial support of the costs of acquiring a new thermal ionization mass spectrometer (TIMS) with high abundance sensitivity, multiple collectors and negative ion capabilities. Scripps Institute of Oceanography will provide 40% of the total equipment acquisition costs. This instrument will allow these investigators to continue there present work is applied isotope geochemistry as well as expand into systems which require the mass resolution and negative ion capabilities for which their current single collector TIMS is not suitable. These increased capabilities include, Re/Os isotope systematics of marine sediments which have implications for paleotectonics, climate, weathering and oceanic hydrothermal activity, and U/Th series isotopes in igneous rocks, which can be used to gain insight into the time scales and processes of magma genesis and transport as well as the chemical composition of source materials for mid-ocean ridge basalts, island arc andesites and rocks from other tectonic settings. ***