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

[9614149] Leger P.I.s提议对热液条件下沉积物变形和成岩过程中发生的耦合力学和化学过程的动力学进行实验研究。在此奖励期间，p.i。科学家们将开始在一个更典型的自然沉积盆地系统上进行实验。含2长石花岗岩成分的砂在热液条件下会发生变形，其孔隙流体为具有沉积盆地典型成分的盐水。将热流体在试样中连续循环，并测量渗透率随时间的变化，以研究我们在工作中发现的降水密封机理。封闭流体系统和开放流体系统都将被研究。孔隙流体将定期取样以监测其化学演化。实验后的材料将被研究，以确定溶解和沉淀机制，种类和他们的定位。＊＊＊

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. ***