Geochemical and Petrological Nature of Volcanism in the Equatorial Atlantic

这是一个继续分析回收样品的项目 从赤道附近的大西洋中脊 分析将 重点是微量元素分析和Sr和Nd同位素对 同样的样本已经分析过铅含量了 数据应提供 深入了解剪切（冷点）和热点对 玄武岩的地球化学和岩石学。 %%% 大洋性岩石成因中的一个基本问题 地壳岩石是了解化学的多样性 成分和矿物学。 地幔等构造效应 羽流（热点）和断裂带（冷点）被认为 发挥作用。 席林博士对部分地区的岩石进行了分析 存在这些影响的海洋地壳应该能揭示 关于岩浆多样性的重要问题。

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.