Geochemical Modeling of How Hydrothermal Water-Rock Reactions Support Near-Ridge Subsurface Microbial Ecosystems

热液水-岩石反应如何支持近山脊地下微生物生态系统的地球化学模型

• 批准号: 0232070
• 负责人: Everett Shock
• 金额: $ 1.86万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-07-01 至 2003-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0232070&HistoricalAwards=false
• 关键词: Geochemical; Modeling; How; Hydrothermal; Water

The primary goal of the research is to predict the extent and diversity of near-ridge subsurface microbial habitats by constructing thermodynamic and kinetic models of the geochemical interactions between rocks, fluids, and microorganisms in the hydrothermally influenced subseafloor. The geochemistry of ridge axis subseafloor environments will be modeled by calculating the full range of likely fluid compositions and available microbial energy. The work will build on the current state of the art in reaction path and reactive transport models by considering interactions between fluids, rock and microbes, involving a suite of likely crustal compositions, phase-separated fluids, conductivity-cooled fluids, and mixtures of these with seawater and conductively-heated seawater.

这项研究的主要目标是通过建立受热液影响的海底岩石、流体和微生物之间的地球化学作用的热力学和动力学模型来预测近海脊地下微生物栖息地的范围和多样性。将通过计算所有可能的流体成分和可用的微生物能量来模拟海脊轴线海底下环境的地球化学。这项工作将通过考虑流体、岩石和微生物之间的相互作用，建立反应路径和反应传输模型的最新技术水平，涉及一套可能的地壳成分、相分离流体、导电冷却流体，以及这些物质与海水和导电加热海水的混合物。