Abundances of W and Mo in MORBs: Characterization of the Depleted Mantle Reservoir

小行星9633498 标题：MORB中W和Mo的丰度：亏损地幔储层的特征。 地幔的组成是地核形成、地幔熔融和液态岩浆喷发以及地壳向地幔俯冲和再循环的结果。地幔中某些元素的低丰度是由于它们在地核中的高溶解度。有些元素喜欢硅酸盐矿物，因此在地幔中发现。有些元素不喜欢金属或矿物，因此集中在液态岩浆中。 金属钨（W）和钼（Mo）表现得像金属爱好者和液体爱好者，因此它们在熔岩中的浓度可能会告诉很多关于形成或核心的时间。然而，这些金属的丰度很低，几乎没有质量分析。这个项目将测量海底玄武岩中的W和Mo，以了解地球内核，地幔和地壳的分离。

9633498 Jacobsen Title: Abundances of W and Mo in MORBs: characterization of the depleted mantle reservoir. The composition of the Earth's mantle is the consequence of core formation, of mantle melting and liquid magma eruption, and of subduction and recycling of crust back into the mantle. The low abundance of some elements in the mantle is explained by their high solubility in the core. Some elements prefer silicate minerals and therefore are found in the mantle. Some elements do not prefer metal or minerals and are therefore concentrated in liquid magmas. The metals tungsten (W) and molybdenum (Mo) behave like metal- lovers and like liquid-lovers so their concentration in the lavas may tell much about the timing of the formation or the core. These metals are in such low abundance, however, that few quality analyses exist. This project will measure W and Mo in ocean floor basalt to understand the segregation of the Earth's core, mantle, and crust.