Microtectonics, deformation mechanisms and rheology of surface reaching salt extrusions, decoration of salt microstructures by gamma-irradiation

该项目的目的是通过对可能仍在活动的伊朗盐冰川(Zagros)(Keh-e-Namak和Qum Keh冰川)收集的大量盐样进行详细和系统的微观结构研究，更好地了解盐冰川的变形机制和流变学。其目的是量化不同含盐冰川岩石的变形机制，以了解不同构造层次的微结构和盐流的演化。为了装饰盐样的微观结构特征，将使用伽马辐照，这是申请者所在研究所的一项成熟技术。这项技术是基于在大约100°C的高剂量伽马射线照射样品后着色的不均匀分布。经过装饰的薄片显示了令人惊讶的丰富的微结构细节(晶界、亚晶界、生长分带)，可用于推断变形、再结晶和流体传输过程。大约五年前，我们在亚琛开始使用这项技术，并根据这些结果发表了一系列论文。不幸的是，Jülich研究反应堆中用来对我们的样品进行伽马辐照的独特辐照设施已经不再可用，尽管在这一领域仍有很大的进一步研究潜力。因此，我们启动了与慕尼黑研究反应堆的合作。在这里，我们申请资金建造一个新的样品容器并获得认证(TÜV)。

The aim of this project is a better understanding of deformation mechanisms and rheology of salt glaciers by a detailed and systematic microstructural study of large number of salt samples collected on salt glaciers in Iran (zagros) which are probably still active (the Kuh-e-Namak and the Qum Kuh glaciers) . The goal is to quantify deformation mechanisms in different salt glacier rocks in order to understand the evolution of microstructures and salt flow at different structural levels. In order to decorate the microstructural features in salt specimens, gammairradiation will be used, which is a well established technique in the institute of the applicants. The technique is based on the inhomogeneous distribution of coloring after irradiating the samples with high doses of gamma-rays at approximately 100 ºC. Decorated thin sections show a surprisingly rich detail of microstructures (grain boundaries, subgrain boundaries, growth zonation) which can be used to infer deformation, recrystallization and fluid transport processes. We started using the technique in Aachen about five years ago and published a series of papers based on these results. Unfortunately, the unique irradiation facility at the Research Reactor in Jülich which was used to gamma-irradiate our samples is no longer available, although there is still a lot of potential for further research in this field. Therefore, we initiated cooperation with the Research Reactor in Munich. Here, we apply for funding to build a new sample container and obtain certification (TÜV).