Muddy Waters: Deep-seated fluid flow processes, seismic faulting and mud volcanism in a mature collision zone

Muddy Waters：成熟碰撞带中的深层流体流动过程、地震断层和泥浆火山活动

• 批准号: 0926759
• 负责人: Michael Tryon
• 金额: $ 11.92万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0926759&HistoricalAwards=false
• 关键词: Muddy; Waters; Deep; seated; fluid

Geotechnical, geochemical, and pore pressure data will be collected during a German?led site survey of the Hellenic Subduction Zone in the eastern Mediterranean in support of IODP Proposal 555-Full 3. The aim of this survey and the IODP proposal is to understand the ?intermediate loops? of the subduction factory, which are several tens to hundreds of kilometers behind the toe. The Mediterranean Ridge is a mature zone of collision and provides easy drilling access to deep seated fluid flow processes in an accretionary prism and its buttress. This project will focus on fault-driven fluid release from the frontal and intermediate loop, which will be quantified in situ and calibrated by hydrothermal geotechnical experiments and geochemical analyses of the pore fluids. CAT flow meters will be deployed, in situ pore pressures measured, and gravity cores collected at the outcrops of the faults for geochemical analyses. The geotechnical and geochemical data will be incorporated into a numerical model of fluid flow between the accretionary complex and its hinterland. Broader impacts: The research will deepen our understanding of the geodynamic and physico-chemical processes along fault zones in the buttress region of an accretionary complex. The data and information from this project will support a highly ranked IODP Proposal and will strengthen international collaborations between IODP scientists. The PI is an early career scientist who will work with educators at the Birch Aquarium at the Scripps Institution of Oceanography in order to disseminate the information generated from this project to a broad non-academic audience.

岩土工程，地球化学和孔隙压力数据将收集在德国？领导对地中海东部的希腊俯冲带进行现场调查，以支持IODP提案555-Full 3。本次调查的目的和IODP的建议是了解？中间回路？俯冲工厂的一部分，在趾后几十到几百公里处。地中海海脊是一个成熟的碰撞区，为研究增生棱柱体及其扶壁中的深层流体流动过程提供了方便的钻探途径。该项目将侧重于断层驱动的流体从前缘和中间环的释放，这将在现场量化，并通过热液岩土实验和孔隙流体的地球化学分析进行校准。 将部署CAT流量计，现场测量孔隙压力，并在断层露头处收集重力岩心进行地球化学分析。地质技术和地球化学数据将纳入增生杂岩与其腹地之间流体流动的数值模型。更广泛的影响：这一研究将加深我们对增生杂岩扶垛区沿沿着断裂带的地球动力学和物理化学过程的认识。该项目的数据和信息将支持一个高级别的IODP提案，并将加强IODP科学家之间的国际合作。 PI是一名早期职业科学家，他将与斯克里普斯海洋学研究所桦树水族馆的教育工作者合作，以便将该项目产生的信息传播给广泛的非学术受众。