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

9614108该研究所建议对热液条件下沉积物变形和成岩过程中发生的机械和化学耦合过程的动力学进行实验研究。在此授权期内，中国人民解放军S将开始在一个更典型的天然沉积盆地系统上进行实验。由2长花岗岩组成的砂岩在水热条件下将与水卤水的孔隙流体一起变形，其成分与沉积盆地中的典型成分相同。将热流体连续循环通过样品并测量渗透率随时间的变化，以研究我们在他们的工作中发现的沉淀密封机理。我们将研究封闭和开放的流体系统。将定期对孔隙流体进行采样，以监测其化学演化。实验后的材料将进行研究，以确定溶解和沉淀的机制、物种及其定位。***

9614108 Scholz 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. ***