MORB Petrogenesis and Crustal Development on the East Pacific Rise from 8 - 10 Degrees N

该提案概述了一个为期两年的研究过程，以充分分析和综合岩石学和地球化学数据，以及地质和地球物理限制，以提出快速扩张的EPR 8°-10°n融化，融化上升，管道和喷发系统的完全集成模型。PI将与巴黎IPGP和WHOI的地质学家和地球物理学家合作。不同的目标包括利用现有的和新的分析来了解地幔来源、熔融和轴向和离轴玄武岩的分异，利用辉长岩包体、u系列测年和地质信息来描绘2a层增厚和离轴喷发的作用，并评估u系列年龄、古磁强度值、火山和地貌特征之间的相关性。这一ABR将汇集十年来的取样和分析工作，以产生一个全面综合的解释模型，说明地壳的生长和演化速度很快。

This proposal outlines a two-year course of study to fully analyze and synthesize petrologic and geochemical data together with geologic and geophysical constraints to come up with fully integrated models of melting, melt ascent, plumbing and eruptive systems at the fast-spreading EPR 8 degrees -10 degrees N. The PI will collaborate with geologists and geophysicists at IPGP in Paris and WHOI. Distinct goals include using existing and new analyses to understand the mantle sources, melting, and fractionation of the axial and off-axis basalts, using gabbroic xenoliths, U-series dating, and geologic information to paint a picture of layer 2a thickening and the role of off-axis eruptions, and to evaluate the correlations between U-series ages, magnetic paleointensity values, and volcanic and geomorphic features. This ABR will bring together a decade of sampling and analytical work to produce a fully integrated interpretive model of crustal growth and evolution at fast spreading rates.