Petrological and Geochemical Investigation of Superfast Spreading Segments of the East Pacific Rise, 13-23 Degrees South

研究人员打算从东太平洋隆起的超快扩张段中选择一套样品，获取矿物、玻璃和全岩的地球化学和玻璃同位素数据，以便继续他们的调查，超快扩张裂谷破裂的岩石学和地球化学过程；一些采样充分的轴线段和伴生的近海脊海山的精细时空变化，造成跨段边界变化而构造表现不明显的过程，以及与泥盆和超快扩张的扩张裂谷有关的硅质熔岩的起源和演化。

The investigators intend to obtain mineral, glass and whole rock geochemical and glass isotopic data on a selected suite of samples from superfast spreading segments of the East Pacific Rise in order to continue their investigation of, the petrological and geochemical process involved in rift failure at superfast spreading; the fine-scale temporal and spatial variability of some well-sampled axial segments and associated near-ridge seamounts, the processes contributing to the variability across segment boundaries with little structural manifestation, and the origin and evolution of silicic lavas associated with devals and propagating rifts at superfast spreading.