A Petrologic and Geochemical Study of Fluid Flow, Diagenesisand Deformation in the Frontal Region of the Cascadia Accretionary Wedge

了解循环流体在控制中的作用 沿着会聚边缘的沉积特性已成为一个高 海洋地球科学的优先研究目标。 中 可以直接对排放流体进行采样的区域的数量， 关于循环深度的推断， 周围的沉积物，以及沉积物的改性程度 物理参数。 海底沉积物取样和 随后的分析可以使循环系统的历史 接受检查 该奖项将支持对岩石学的检查， 碳酸盐沉积物的地球化学， 沿着俄勒冈州边缘流动的液体 样品将 是1990年9月由潜水器打捞上来的 样品将 分析了它们的主要元素化学和同位素 混合物.

Understanding the role of circulating fluids in controlling sedimentary properties along convergent margins has become a high priority research objective in the marine geosciences. In a number of areas the discharging fluid can be sampled directly and inferences made about the depth of circulation, interaction with surrounding sediments, and degree of modification of sedimentary physical parameters. Sampling of sea-floor sediments and subsequent analysis can allow the history of circulation systems to be examined. This award will support an examination of the petrography and geochemistry of carbonate sediments that have been deposited by circulating fluids along the Oregon margin. Samples will be recovered by submersible in September of 1990. Samples will be analyzed for their major element chemistry and isotope composition.