Integrated records of tectonic and climate interactions in the Northern Alpine Foreland Basin sedimentary architecture

北高山前陆盆地沉积构造构造与气候相互作用的综合记录

• 批准号: 442540772
• 负责人: Professor Dr. Todd Alan Ehlers
• 金额: --
• 依托单位: School of Geographical and Earth Sciences
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/442540772?language=en
• 关键词: Integrated; records; tectonic; climate; interactions

Foreland basin architecture records the tectonic evolution and climate history of the neighboring mountain belt. The Northern Alpine Foreland Basin (NAFB) shows along-strike heterogeneity in the sedimentary architecture. Previous geological and geophysical observational studies have led to the hypothesis that slab tearing and break-off influences the along strike heterogeneous architecture of the NAFB. However, this cause-and-effect relationship is based on deductive reasoning and so far quantitative assessment of the effect of this process on the NAFB architecture is lacking. In this study, we will test the hypothesis that slab tearing and break-off influences the along strike heterogeneous architecture of NAFB. The hypothesis will be tested by (1) 3D simulation of depositional dynamics of the foreland basin above slab break-off and tearing using an integrated geodynamic and 3D stratigraphic (depositional) model, and by (2) evaluating end-member model scenarios through detailed comparison to the present day NAFB architecture. This state-of-the-art modelling approach combined with observational geological and geophysical data from other aspects of 4DMB will enable us to separate and quantify the effect of the slab break-off and tearing on the NAFB architecture. It will also allow us to assess to which extent slab tearing and break-off can be overprinted by other tectonic processes, climate change, and sea level variations. In close collaboration with complementary proposals within the 4DMB, and in collaboration with other national and international collaborators, this project will make a significant contribution in disentangling the surface responses to the changes in the deep structure (Theme 2 of the SPP).

前陆盆地构造记录了邻近山带的构造演化和气候历史。北阿尔卑斯前陆盆地在沉积构型上表现出沿走向的非均质性。以往的地质和地球物理观测研究已经提出了一种假设，即板块撕裂和断裂影响了NAFB的顺走非均质构造。然而，这种因果关系是基于演绎推理的，到目前为止，还缺乏对这一过程对NAFB结构影响的定量评估。在本研究中，我们将检验板坯撕裂和断裂影响NAFB沿向非均质结构的假设。该假设将通过(1)使用综合地球动力学和三维地层（沉积）模型对板块断裂和撕裂上方的前陆盆地的沉积动力学进行三维模拟，以及(2)通过与当前NAFB结构的详细比较来评估端元模型情景来验证。这种最先进的建模方法与4DMB其他方面的观测地质和地球物理数据相结合，将使我们能够分离和量化平板断裂和撕裂对NAFB结构的影响。它还将使我们能够评估其他构造过程、气候变化和海平面变化在多大程度上叠加了板块撕裂和断裂。通过与4DMB内的互补方案的密切合作，以及与其他国家和国际合作者的合作，该项目将在解开深层结构变化的表面响应方面做出重大贡献（SPP的主题2）。