Constraints on the Mechanics of Ocean Crustal Faults

洋壳断层力学的约束

• 批准号: 0961775
• 负责人: Nicholas Hayman
• 金额: $ 35.85万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0961775&HistoricalAwards=false
• 关键词: Constraints; Mechanics; Ocean; Crustal; Faults

Over the years much has been learned about faulting and fault processes on land through the study of samples collects from exposed fault, ?fault rocks?. Measurements of fabric elements (such as grain orientation and sense of shear), deformation histories and properties such as strength and permeability have been the focus of research in many laboratories for decades, but owing to their inaccessibility, no such studies of fault rocks have been carried out. Using samples from a variety of sources including submersible sampling, drilling and ophiolites where oceanic rocks are exposed on land, this study will be the first of fault rocks from the seafloor. As a first venture into a new area of research it will face a number of difficulties, but will likewise almost certainly yield new insights. The broader impacts of this work are its contribution to fundamental knowledge, support for a young investigator, and support for a graduate student.

多年来，通过研究从暴露的断层、断层岩石中收集的样品，人们对陆地上的断层和断层过程有了很多了解。几十年来，组构元素(如颗粒取向和剪切感)、变形历史和强度和渗透率等性质的测量一直是许多实验室研究的重点，但由于它们无法获得，因此还没有对断层岩进行这样的研究。这项研究使用了来自各种来源的样品，包括潜水取样、钻探和陆上暴露海洋岩石的蛇绿岩，这将是首次从海底提取断层岩。作为进入一个新研究领域的第一次冒险，它将面临许多困难，但几乎肯定会产生新的见解。这项工作更广泛的影响是它对基础知识的贡献，对年轻研究人员的支持，以及对研究生的支持。