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.

该项目将在已安排的海洋学巡航期间从 PACMANUS 热液系统获取新样本，并对硅酸盐和硫酸盐矿物组合进行流体包裹体和岩石学研究。 在加热和冷冻技术的基础上，流体包裹体地温测量将阐明系统过去的热历史，并补充从喷口流体采样、同位素分析、矿物化学和热测量中收集的信息。 对含有包裹体的样品进行微探针研究将限制矿物化学并为流体包裹体研究提供背景。 通过合作，还可以分析样品中的 Cl/Br 和氯化物同位素，这是一种新技术，可以根据与盐水和蒸汽之间的物质分馏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在 PACMANUS 的 ODP Leg 193 钻探期间获得的样本，并评估该地点作为 IODP 未来钻探的一部分。 该研究将在项目的每个阶段都有一名本科生参与，包括海洋巡航。