First-order kinematic problems of salt-influenced inversion structures

我们提出了一个项目来研究复杂的反演结构的运动学发展在德国中部的两个案例研究（奥贝雷斯Allertal和Sontra）。我们将针对之前SPP子项目中确定的特定的、反复出现的结构特性。这些都不适合文献中提出的倒转结构模型。运动学重建是理解这种复杂构造的有效工具，即使在反向裂谷和地堑构造的演化与底辟作用相结合的情况下，也使定量恢复变得困难。晚白垩世盆地范围内的均匀收缩脉冲为识别在同一构造环境下导致不同构造类型演化的主要因素（如初始盐层厚度或盐上地层的变化）提供了机会。在观测到的倒置结构光谱中，两个目标区域代表不同程度盐影响的端元。通过钻井、采矿和最近的地质填图，对Allertal构造进行了很好的勘探。Sontra的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。

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.