Barbados Accretionary Prism: Seismic, Geothermal, Geochemical Fluid Expulsion Features

该项目将分析和解释在巴巴多斯吸积杂岩中收集的地球物理数据。该项目的目标和成果包括：(1)开发一幅关于吸积棱柱的三维表面形态与海底结构之间关系的综合图景，(2)进一步定义巴巴多斯海脊吸积复合体中的热流分布，(3)用地震反射法和热、化学、孔隙压力梯度测量方法研究了研究区的流体通量和排液特征；(4)测定岩心沉积物的渗透率和热物性，分析1988年获得的现场长期孔压记录，以确定原地孔隙弹性性质；(5)进一步发展增生杂岩发育的热和水文模型。

This project will analyze and interpret geophysical data collected in the Barbados Accretionary Complex. The goals and products of the project include: (1) development of a comprehensive picture of the relation between the 3-D surface morphology of the accretionary prism and subbottom structures, (2) further definition of the distribution of heat flow in the Barbados Ridge accretionary complex, (3) characterization of the fluid flux and fluid expulsion features in areas that have been surveyed with seismic reflection methods and measurements of thermal, chemical and pore pressure gradients, (4) determination of the permeability and thermal properties of sediments taken in cores and analysis of long-term in site pore- pressure records obtained in 1988 to determine the in situ poro- elastic properties, and (5) further development of thermal and hydrological models of accretionary complex development.