Geochemical and Petrological Nature of Volcanism in the Equatorial Atlantic

这是一个继续分析从赤道附近的大西洋中脊回收的样本的项目。分析将集中在痕量元素分析和Sr和Nd同位素对相同的样品已经分析了铅。这些数据将有助于了解剪切（冷点）和热点对玄武岩地球化学和岩石学的影响。海洋地壳岩石成因的一个基本问题是了解化学成分和矿物学的多样性。构造效应，如地幔柱（热点）和断裂带（冷点）被认为发挥了作用。席林博士对存在这些效应的海洋地壳部分岩石的分析，应该能阐明岩浆多样性这一重要问题。

This is a project to continue analyses of samples recovered from the Mid Atlantic Ridge near the equator. Analyses will focus on trace element analyses and Sr and Nd isotopes on the same samples already analyzed for Pb. Data should provide insight into effects of shear (cold spot) and hot spots on the geochemistry and petrology of basalts. %%% A fundamental problem in the petrogenesis of oceanic crustal rocks is understanding the diversity of chemical composition and mineralogy. Tectonic effects such as mantle plumes (hot spots) and fracture zones (cold spots) are thought to play a role. Dr. Schilling's analyses of rocks from parts of the oceanic crust where these effects are present should shed light on the important problem of magmatic diversity.