Quantitative Logging of Alteration and Veins in Drillcore from Hole 504B

该项目寻求支持，以量化和编纂 观察到的构造、火成岩和变质/蚀变特征 在大洋钻探计划504 B孔的岩心材料和日志中。 在 504 B是世界上最深的 在海洋地壳钻孔，唯一一个采样枕 玄武岩/席状岩墙过渡。 这个钻孔 通过六（6）个DSDP和ODP腿成功加深。 PI开始 详细描述构造和岩石学的任务 最近的一次，第140段。 他的初步工作表明， 矿脉丰度等特征的显著趋势和/或周期 可能存在次生矿物。 PI现在希望将此 通过检查和描述核心材料的工作， 前五（5）个钻井腿。 本研究的目的是 提供一个标准的和更详细的描述性日志， 重要的海洋地壳参考部分，并确定 构造和岩石学特征的总体趋势和周期 存在于井下。 反过来，这些信息将提供见解， 海洋地壳的形成过程，以及 洋壳次生热液蚀变

This project seeks support to quantify and codify measurements of structural, igneous, and metamorphic/alteration features observed in core materials and logs of Ocean Drilling Program Hole 504B. At just over 2 kilometers sub-seafloor depth, 504B is the deepest borehole in ocean crust, and the only one that samples the pillow basalt/sheeted dike transition. This borehole has been successfully deepened through six (6) DSDP and ODP legs. PI began the task of detailed description of structural and petrologic features on the most recent, Leg 140. His initial work shows that significant trends and/or cycles in such features as vein abundance and secondary minerals may exist. PI now wishes to extend this work through examination and description of core materials from the previous five (5) drilling legs. The goals of this research are to provide a standard and more detailed descriptive log of this important ocean crustal reference section, and to determine what overall trends and cycles in structural and petrologic features exist down hole. This information, in turn, will provide insights to processes of ocean crust formation, as well as processes of secondary hydrothermal alteration of ocean crust.