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

盐挤压表面的微观构造、变形机制和流变学、伽马辐射对盐微结构的修饰

• 批准号: 126157913
• 负责人: Professor Dr. Janos L. Urai (†)
• 金额: --
• 依托单位: Lehrstuhl für Geologie und Paläontologie (GIA)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/126157913?language=en
• 关键词: Microtectonics; deformation; mechanisms; rheology; surface

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).

该项目的目的是通过对在伊朗（zagros）可能仍然活跃的盐冰川（Kuh-e- namak和Qum Kuh冰川）收集的大量盐样本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。目的是量化不同盐冰川岩石的变形机制，以了解不同结构水平下微观结构的演化和盐流。为了修饰盐样品的微观结构特征，将使用伽玛辐照，这是一种成熟的技术，在申请人的研究所。该技术是基于在大约100ºC的高剂量伽马射线照射样品后着色的不均匀分布。装饰薄片显示了令人惊讶的丰富的微观结构细节（晶界，亚晶界，生长带），可以用来推断变形，再结晶和流体输运过程。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，在j<e:1>利希的研究反应堆中，用于对我们的样品进行伽玛照射的独特辐照设施已不再可用，尽管在这一领域仍有很大的进一步研究潜力。因此，我们开始与慕尼黑的研究反应堆合作。在这里，我们申请资金建造一个新的样品集装箱并获得认证（TÜV）。