First-order kinematic problems of salt-influenced inversion structures

盐影响反转构造的一阶运动学问题

• 批准号: 84600811
• 负责人: Professor Dr. Jonas Kley
• 金额: --
• 依托单位: Abteilung Strukturgeologie und Geodynamik
• 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 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/84600811?language=en
• 关键词: First; order; kinematic; problems; salt

We propose a project to study the kinematic development of complex inversion structures on two case studies in Central Germany (Oberes Allertal and Sontra). We will target specific, recurrent structural peculiarities identified in a preceding SPP subproject. These fit none of the models proposed in the literature for inversion structures. Kinematic reconstruction is an efficient tool to understand such complex structures, even where the evolution of inverted rifts and graben structures is combined with diapirism that makes quantitative restoration difficult. The basinwide, uniform pulse of Late Cretaceous contraction offers the opportunity to identify the principal factors, such as the initial salt thickness or variations of the suprasalt stratigraphy, that led to the evolution of different structure types in the same tectonic environment. In the spectrum of inversion structures observed, the two target areas represent end members with different degrees of salt influence. The Allertal structure is well explored through drilling, mining and recent geological mapping. The Sontra study will benefit from the high resolution database created during planning and construction of the A44 motorway in Central Germany.

我们提出了一个项目，通过德国中部的两个案例研究（Oberes Allertal 和 Sontra）来研究复杂反转结构的运动学发展。我们将针对先前 SPP 子项目中确定的特定的、经常性的结构特点。这些都不适合文献中提出的反演结构模型。运动学重建是理解此类复杂结构的有效工具，即使倒转裂谷和地堑结构的演化与底辟作用相结合，使得定量恢复变得困难。晚白垩世收缩的全盆地均匀脉动为识别导致同一构造环境中不同结构类型演化的主要因素提供了机会，例如初始盐厚度或盐上地层变化。在观测到的反演结构谱中，两个目标区域代表了具有不同程度盐影响的端元。通过钻探、采矿和最近的地质测绘，阿勒塔尔构造得到了很好的勘探。 Sontra 研究将受益于德国中部 A44 高速公路规划和建设期间创建的高分辨率数据库。