Collaborative Research: An Investigation into Relative Noble Gas Fractionation during Mantle Melting: Constraints fom the Southeast Indian Ridge

获奖原因是测量了来自东南印度脊（SEIR）的阶梯破碎玄武岩淬火玻璃上的He、Ne、Ar稀有气体和CO2含量，以研究稀有气体在地幔中的分馏方式，为理解地幔熔体提取和挥发性运输提供了必要的知识。这项工作还将研究地幔40ar /36Ar的非均质性，可能是由大气Ar的俯冲引起的，并将研究所谓的He悖论，即母物质来自地球深处的熔融样品（以高3 He/4He为特征，与地幔羽流有关）的He丰度较低，以及He通量似乎与地幔的热通量无关（以岩浆产生为代表）。东南印度海岭的样本被选为研究对象，因为它们在阿姆斯特丹-圣。保罗地幔柱与脊向深度的变化一致。因此，这些样品代表了一个独特的样品集，用于研究深海地幔柱作用于扩张脊下地幔过程对海底地幔稀有气体系统的影响。

Award is for measuring He, Ne, and Ar noble gases and CO2 content on step-crushed basaltic quench glasses from the Southeast Indian Ridge (SEIR) to examine how noble gases fractionate in the mantle, knowledge essential to understanding mantle melt extraction and volatile transport. This work will also examine heterogeneity in mantle 40 Ar/36Ar, possibly arising from subduction of atmospheric Ar, and will also investigate the so-called He-paradox, wherey melt samples whose parental material originated from deep within the earth (characterized by high 3 He/4He and associated with mantle plumes) have low He aundances, as well as the He flux seemingly having little to do with heat flux from the mantle (as represented by magma production). Samples from the Southeast Indian Ridge have been chosen for the study as they show smooth variation in composition away from the Amsterdamm-St. Paul mantle plume that coincides with changes in ridge axial depth. These samples therefore represent a unique sample set to examine the influence on sub-oceanic mantle noble gas systematics by a deep mantle plume acting on the mantle processes underneath a spreading ridge.