Fabric genesis, strength and physical properties of young Sediments, Ursa and Brazos-Trinity basins, Gulf of Mexico. A follow-up laboratory study of IODP Expedition 308

墨西哥湾乌尔萨盆地和布拉索斯-三一盆地年轻沉积物的结构成因、强度和物理特性。

• 批准号: 28607881
• 负责人: Professor Dr. Jan-Hinrich Behrmann
• 金额: --
• 依托单位: Institut für Erdwissenschaften
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/28607881?language=en
• 关键词: Fabric; genesis; strength; physical; properties

How do catastrophic submarine mass movements come about, and are sediment consolidation, fabric genesis, and texture development important controlling factors? This is the principal question of the FastSed project proposed here for funding. In an environment which has arguably the fastest finegrained sedimentation on modern Earth, IODP Expedition 308, Gulf of Mexico Hydrogeology, has created a unique and comprehensive data set of sediment petrography, physical properties, and downhole measurements of overpressure. These data serve as foundation for a study of geotechnical properties, microfabric and crystallographic preferred orientation of clays to identify and quantify fabric building mechanisms in muds sedimented by fallout and by submarine mass transport. The analytical techniques employed are triaxial testing and ring shear testing. Reference materials will be studied by scanning electron microscopy and X-ray texture goniometry. It is hoped that FastSed results will make a basic contribution to the assessment of stability problems of sedimented continental slopes. This is especially relevant for areas where current and future exploration for hydrocarbons require major technical installations at the seafloor, such as the Gulf of Mexico or the mid-Norwegian margin.

灾难性的海底质量运动如何产生，沉积物合并，织物创造和质地发展重要的控制因素？这是此处提出的供资金的禁食项目的主要问题。在一个现代地球上最快的沉积物的环境中，IODP Expedition 308，墨西哥水文地质学的IODP Expedition 308创造了一个独特而全面的数据集，这些数据集的沉积物岩石学，物理特性和下压力的下孔测量。这些数据是研究岩土特性，微型代理和晶体学首选粘土方向的基础，以识别和量化因辐射和海底质量传输而沉积的泥浆中的织物建筑机制。所采用的分析技术是三轴测试和环剪切测试。参考材料将通过扫描电子显微镜和X射线纹理测量法研究。希望禁食的结果能为评估沉积大陆斜率的稳定性问题做出基本贡献。这与当前和将来的碳氢化合物探索需要在海底进行主要技术装置的地区尤其重要，例如墨西哥湾或北野湾的边缘。