Collaborative Research: Experimental Deformation and Diagenesis of Sediments Under Hydrothermal Conditions

合作研究：热液条件下沉积物的实验变形与成岩作用

• 批准号: 9614149
• 负责人: Edmond Mathez
• 金额: $ 1.34万
• 依托单位: American Museum Natural History
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-06-01 至 1999-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9614149&HistoricalAwards=false
• 关键词: Collaborative; Research; Experimental; Deformation; Diagenesis

9614149 Leger The P.I.s propose an experimental study of the dynamics of coupled mechanical and chemical processes that occur during the deformation and diagenesis of sediments under hydrothermal conditions. During this award period, the P. I.'s will begin experimentation on a system more typical of that which occurs in natural sedimentary basins. A sand with the composition of a 2-feldspar granite will be deformed under hydrothermal conditions with a pore fluid of aqueous brine with a composition typical of that found in sedimentary basins. The hot fluid will be continuously circulated through the sample and permeability measured as a function of time in order to study the precipitation sealing mechanism discovered in our their work. Both closed and open fluid systems will be studied. The pore fluids will be sampled periodically to monitor its chemical evolution. The post-experimental material will be studied to determine the dissolution and precipitation mechanisms, species and their localization. ***

小行星9614149 P.I.s建议对热液条件下沉积物变形和成岩过程中发生的耦合机械和化学过程的动力学进行实验研究。在此期间，P.I.的将开始实验的系统更典型的是发生在自然沉积盆地。具有2-长石花岗岩成分的砂在热液条件下会发生变形，其中含有盐水孔隙流体，其成分与沉积盆地中发现的典型成分相同。 将热流体连续地循环通过样品，并测量渗透率作为时间的函数，以研究我们的工作中发现的沉淀密封机制。 将研究封闭和开放的流体系统。 将定期对孔隙流体进行取样，以监测其化学演化。 将对实验后材料进行研究，以确定溶解和沉淀机制、物质及其定位。 ***