Deformation and transport processes in halite: a microtectonics study

本研究的目的是量化的变形和流体输送历史的盐从中欧盆地，通过微观构造分析。岩盐样品将进行研究，通过整合的透射光显微镜的伽玛装饰的薄片，亚晶粒大小的抛光和化学蚀刻的样品，使用反射光显微镜，晶界结构和微观化学分析的SEM和micropobe，和X射线取向成像使用X射线衍射仪与聚焦光束和2D探测器的新技术。我们将通过详细研究德国和波兰盐矿中暴露的有据可查的地下结构来验证该方法。然后，该方法将被应用于从中欧盆地的钻井岩心的盐样品，得到的变形历史，机械性能，古应力，重结晶和流体输运的信息。该项目的长期目标是提供一个定量模型的机械性能和运输过程中的中欧盆地的陨石，整合的结果与其他projetcs在SPP，并提供输入的大规模，基于过程的模型，这是Schwerpunktprogramm的最终目标。

This study is aimed at quantifying the deformation and fluid transport history of salt from the Central-European Basin, by mircrotectonic analysis. Halite samples will be studied by integrating the novel techniques of transmitted light microscopy of Gamma- decorated thin sections, subgrain size paleopiezometry of polished and chemically etched samples using reflected light microscopy, analysis of grain boundary structure and microchemistry by SEM and micropobe, and X-ray orientation imaging using an X-ray diffratometer with a focussed beam and a 2D detector. We will validate the method with a detailed study of well-documented underground structures exposed in salt mines in Germany and Poland. Then the method will be applied to salt samples from drillcores from the Central-European Basin, to derive information on the deformation history, mechanical properties, paleostress, recrystallization, and fluid transport. Long-term aim of the project is to provide a quantitative model of the mechanical properties and transport processes in the evaporites of the Central European Basin, integrate the results with those of other projetcs in the SPP, and provide input for the large-scale, process-based model which is the final goal of the Schwerpunktprogramm.