Integrated fluid inclusion and petrological studies of the PACMANUS hydrothermal system - building upon the results of ODP Leg 193

PACMANUS 热液系统的综合流体包裹体和岩石学研究 - 基于 ODP Leg 193 的结果

• 批准号: 0425591
• 负责人: David Vanko
• 金额: $ 4.66万
• 依托单位: Towson University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-07-15 至 2007-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0425591&HistoricalAwards=false
• 关键词: Integrated; fluid; inclusion; petrological; studies

This project will acquire new samples from the PACMANUS hydrothermal system during an already scheduled oceanographic cruise and will conduct fluid inclusion and petrologic studies of the silicate and sulfate mineral assemblages. On the basis of heating and freezing techniques, fluid inclusion geothermometry will elucidate the past thermal history of the system and complement information gleaned from vent fluid sampling, isotopic analyses, mineral chemistry, and thermal measurements. Microprobe studies of the inclusion-bearing samples will constrain mineral chemistry and provide the context for the fluid inclusion studies. Through a collaborative effort, samples may also be analyzed for Cl/Br and chloride isotopes, a new technique that may constrain the nature of the volatile input based on principles related to the fractionation of species between brines and vapor. The research program will contribute to further analysis of samples obtained during ODP Leg 193 drilling at PACMANUS and to the assessment of this site for potential future drilling as part of IODP. The research will involve an undergraduate student at every phase of the project, including the oceanographic cruise.

该项目将在已经安排的海洋学巡航期间从Pacmanus热液系统中获取新样品，并将对硅酸盐和硫酸盐矿物质组合进行液体包容和岩石学研究。 在加热和冷冻技术的基础上，流体包含地热测法将阐明系统的过去热历史，并根据排气流体采样，同位素分析，矿物质化学和热测量收集的补充信息。 对纳入样品的微探针研究将限制矿物化学，并为液体包容性研究提供背景。 通过协作的工作，还可以分析样品的CL/BR和氯化物同位素，这是一种新技术，可能会根据与盐水和蒸气之间物种分数相关的原理来限制挥发性输入的性质。 该研究计划将有助于进一步分析PACMANUS ODP腿193钻孔中获得的样品，并评估本网站作为IODP的一部分，以便将来的钻探潜在钻探。 该研究将在项目的每个阶段，包括海洋学巡游中涉及一名本科生。