Collaborative Research: Characterization of Subduction Channel Processes - Borehole Sampling at Active Serpentinite Mud Volcanoes on the Mariana Forearc

合作研究:俯冲通道过程的表征 - 马里亚纳弧前活跃蛇纹岩泥火山的钻孔采样

基本信息

  • 批准号:
    1921654
  • 负责人:
  • 金额:
    $ 26.97万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2019
  • 资助国家:
    美国
  • 起止时间:
    2019-09-01 至 2022-11-30
  • 项目状态:
    已结题

项目摘要

The Mariana Trench is the deepest location on Earth, resulting from the subduction of the Pacific Plate under the Philippine Plate. Fluids that were trapped in the pores and minerals of the Pacific Plate are liberated during this subduction. These fluids react with rock in the overriding Philippine Plate to produce a slurry of mud and fluids that are very alkaline (with a pH up to 12.5, more alkaline than Clorox), yet support microbial life that thrives in such extreme environments. The discharge produces the largest mud volcanoes on Earth, some spanning 50 km in diameter and several kilometers in height. Probing the mud volcanoes by sampling fluids from boreholes drilling into them, provides the means to examine processes that occur at depth during subduction. The subduction zone environment is the epicenter for most large earthquakes on Earth, and the fluids that flow through subduction zones can be connected with that earthquake generation. Moreover, the reactions that occur to produce the fluids provide energy that can support a wide variety of microbes, a subseafloor biosphere that is present throughout what has been referred to broadly as a "deep crustal aquifer".The research team proposes to the sample fluids and dissolved gases from this ascending slurry in three mud volcanoes that tap different pressure (depths ranging from 10 to 20 km) and temperature conditions at depth. These ascending fluids discharge from scientific boreholes that were emplaced during International Ocean Discovery Program (IODP) Expedition 366. Prior to sampling these fluids, CORK-Lite instruments will be deployed to enable sampling operations. This infrastructure will also provide for a range of potential experimentation and monitoring efforts that can be used in the future. Specifically, the project will: (i) design, fabricate, and deploy CORK-Lites, (ii) sample discharging fluids with gas-tight and large volume sampling systems, (iii) analyze collected fluids for a range of solutes, dissolved gases, and isotopes, and (iv) measure borehole pressure and fluid discharge rates. The CORK-Lites will be sealed at the end of the field program for future experimentation and monitoring efforts. Results from this effort will test a model of abiotic methane formation, constrain the extent of serpentinization during the initial stages of subduction, set limits on potential microbial metabolic capabilities, and resolve water-rock reactions and solute sources.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
玛丽安娜(Mariana)的沟渠是地球上最深的位置,这是由于菲律宾板块下太平洋板块的俯冲而导致的。在此俯冲期间,将被困在太平洋板块的孔和矿物质中的液体被释放。这些流体与岩石在菲律宾板块中的岩石反应,以产生非常碱性的泥浆和液体(pH值为12.5,碱性比Clorox高),但支持在这种极端环境中繁荣发展的微生物生命。排放产生地球上最大的泥土火山,有些直径为50公里,高度几公里。通过对钻孔进行采样液体来探测泥石火山,提供了检查俯冲过程中深度发生的过程的手段。俯冲带环境是地球上大多数大地震的震中,流过俯冲带的流体可以与地震产生相连。 Moreover, the reactions that occur to produce the fluids provide energy that can support a wide variety of microbes, a subseafloor biosphere that is present throughout what has been referred to broadly as a "deep crustal aquifer".The research team proposes to the sample fluids and dissolved gases from this ascending slurry in three mud volcanoes that tap different pressure (depths ranging from 10 to 20 km) and temperature conditions at depth.这些上升的液体从国际海洋发现计划(IODP)探险366期间放置的科学钻孔排出。在对这些液体进行采样之前,将部署软木仪仪器以启用采样操作。这种基础设施还将提供一系列潜在的实验和监视工作,这些实验和监视工作将来可以使用。具体而言,该项目将:(i)设计,制造和部署软木塞,(ii)用气密和大容量采样系统排放液体的样品,(III)分析收集的液体,以范围的溶质,溶解的气体,同位素和(iv)测量井孔压力和流体排放率。在现场计划的末尾将密封软木塞,以进行未来的实验和监测工作。这项工作的结果将测试一个非生物甲烷形成的模型,限制了俯冲阶段期间蛇形化的程度,对潜在的微生物代谢能力设定了限制,解决了水上摇滚反应和溶质源。该奖项反映了NSF的法定任务,并通过评估了基金会的智力效果。

项目成果

期刊论文数量(0)
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会议论文数量(0)
专利数量(0)

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Susan Lang其他文献

New paradigm for teaching scientific writing in STEM.
STEM 科学写作教学的新范式。
Immigration and Immigrants
移民与移民
Computer-Assisted Corpus Analysis: An Introduction to Concepts, Processes, and Decisions
计算机辅助语料库分析:概念、过程和决策简介
A Taxonomy for Writing Analytics
编写分析的分类法
  • DOI:
    10.37514/jwa-j.2019.3.1.03
  • 发表时间:
    2019
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Susan Lang;Laura L. Aull;W. Marcellino
  • 通讯作者:
    W. Marcellino
Writing Analytics: Broadening the Community
写作分析:扩大社区
  • DOI:
    10.37514/jwa-j.2019.3.1.01
  • 发表时间:
    2019
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Joseph M. Moxley;N. Elliot;Susan Lang;Dave Eubanks;Margaret Vezzu;Jessica Nastal;Alaina Tackitt;Johanna Phelps;M. Osborn
  • 通讯作者:
    M. Osborn

Susan Lang的其他文献

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{{ truncateString('Susan Lang', 18)}}的其他基金

Operation of a National Ocean Sciences Accelerator Mass Spec
国家海洋科学加速器质谱仪的运行
  • 批准号:
    2244731
  • 财政年份:
    2023
  • 资助金额:
    $ 26.97万
  • 项目类别:
    Cooperative Agreement
Collaborative Research: Characterization of Subduction Channel Processes - Borehole Sampling at Active Serpentinite Mud Volcanoes on the Mariana Forearc
合作研究:俯冲通道过程的表征 - 马里亚纳弧前活跃蛇纹岩泥火山的钻孔采样
  • 批准号:
    2304493
  • 财政年份:
    2022
  • 资助金额:
    $ 26.97万
  • 项目类别:
    Continuing Grant
Collaborative Research: Investigating the Fate of Carbon at an Ultraslow Spreading Center
合作研究:调查碳在超慢扩散中心的命运
  • 批准号:
    1801036
  • 财政年份:
    2019
  • 资助金额:
    $ 26.97万
  • 项目类别:
    Standard Grant
Operation of A National Ocean Sciences Accelerator Mass Spectrometry Facility at The Woods Hole Oceanographic Institution
伍兹霍尔海洋研究所国家海洋科学加速器质谱设施的运行
  • 批准号:
    1755125
  • 财政年份:
    2018
  • 资助金额:
    $ 26.97万
  • 项目类别:
    Cooperative Agreement
Collaborative Research: Investigating the Lost City as an ultramafic urban center of the subseafloor, fueled by energy and carbon from the mantle
合作研究:调查失落之城是海底超镁铁质城市中心,以地幔能量和碳为燃料
  • 批准号:
    1536702
  • 财政年份:
    2015
  • 资助金额:
    $ 26.97万
  • 项目类别:
    Standard Grant
Early Career: Instrument and Technician Support for the Isotopic Analysis of Individual Organic Compounds in the Earth System
早期职业:地球系统中单个有机化合物同位素分析的仪器和技术人员支持
  • 批准号:
    1349539
  • 财政年份:
    2014
  • 资助金额:
    $ 26.97万
  • 项目类别:
    Standard Grant

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  • 批准号:
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合作研究:TRTech-PGR TRACK:小型 CRISPR 系统的发现和表征,用于基于病毒的植物遗传编辑传递。
  • 批准号:
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合作研究:在高熵合金缺陷产生和演化表征中连接原子尺度和介观尺度
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