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Growth faults and the record of tectonic and sedimentary signals in growth strata

生长断层以及生长地层构造和沉积信号的记录

基本信息

批准号：
190666801
负责人：
Privatdozent Dr. Stefan Back
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：
2011
资助国家：
德国
起止时间：
2010-12-31 至 2015-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/190666801?language=en
关键词：
Growth faults record tectonic sedimentary

项目摘要

Gravity-driven growth faults and growth-faulted sedimentary successions have been identified in many parts of the world, often associated with economically important hydrocarbon ressources. However, few studies have targeted a detailed tectonic-sedimentary analysis of these systems, and therefore several issues concerning their development remain unsolved. Questions particularly arise when discussing (1) the relative importance of the main controlling factors for syn-sedimentary fault growth and syn-tectonic deposition, and the possibility to quantify these; (2) the mechanisms that control the initiation, activity and abandonment of kilometre-scale growth-fault-bound depocentres, including the explanation of the diverse structural development of the bounding faults concerning scale, dip direction, and fault movement; and (3) the predictability of lithological properties of growth successions from geophysical subsurface data lacking well or outcrop control. This study tackles the above issues by applying three different geological analysis approaches, 1) outcrop-based field work, 2) highresolution remote-sensing analysis, and 3) 2D/3D seismic interpretation to several large-scale growthfault systems located in different geographic and geological settings. The quantification and comparative analysis of the results from the different approaches and settings will allow to separate setting- or approach-specific observations from system-immanent information, exposing fundamental rules behind the development of growth faults and growth stratigraphy.

重力驱动的生长断层和生长断层沉积序列已在世界许多地方被发现，通常与具有重要经济意义的油气资源有关。然而，很少有研究针对这些系统的详细构造-沉积分析，因此，有关其发展的几个问题仍然没有解决。特别是在讨论（1）同沉积断层发育和同构造沉积的主控因素的相对重要性及其量化的可能性时，出现了一些问题;（2）控制超大规模生长断层约束沉积中心的形成、活动和废弃的机制，包括解释边界断层在规模、倾向、和断层运动;（3）从缺乏井或露头控制的地球物理地下数据中预测生长序列的岩性。本研究通过应用三种不同的地质分析方法来解决上述问题：1）基于露头的野外工作，2）高分辨率遥感分析，3）对位于不同地理和地质环境中的几个大型生长断层系统进行2D/3D地震解释。从不同的方法和设置的结果的量化和比较分析，将允许分离设置或方法的具体意见从系统的immunological信息，揭示生长断层和生长地层学的发展背后的基本规则。