Quantitative reconstruction of the temporal evolution of stress in the Dutch basins

荷兰盆地应力随时间演化的定量重建

• 批准号: 5450029
• 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: Priority Programmes
• 财政年份: 2005
• 资助国家: 德国
• 起止时间: 2004-12-31 至 2006-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5450029?language=en
• 关键词: Quantitative; reconstruction; temporal; evolution; stress

Changing stress fields through geological time were related to a wide range of processes in the Central European Basin (CEB): generation and reactivation of faults, changing patterns of sedimentation, retention and leakage of fluids for example. Based on 3D fault patterns and palinspastic reconstruction, we propose to carry out stress inversion analyses for selected horizons in a numer of areas. Our study is based on Nederlandse Aardolie Maatschappij¿s 3D seismic database, selecting domains in which the stress field at the time of interest is homogeneous. We will concentrate on four key time periods: the M. Tertiary and U. Cretaceous/L. Tertiary, the Jurassic, and the Triassic Buntsandstein. Active faults from these time periods will be selected and their 3D fault kinematics will be analysed. Fault morphology and kinematics will be used to determine the regional stress using the Angelier Method (1990). Comparion of the domain data will alow the reconstruction of the major far-field stresses active during the deposition of the CEB. Our results will provide: 1) An improved model of the dynamic evolution of the CEB in the areas studied, 2) a better understanding of the processes of tectonic inversion, and the interaction of salt tectonis and regional stress fields in the CEB.

随着地质时间的推移，应力场的变化与中欧盆地（CEB）的一系列广泛过程有关：例如，断层的产生和重新激活、沉积模式的变化、流体的滞留和泄漏。基于三维断层模式和弹性重建，我们建议对一些地区的选定层位进行应力反演分析。我们的研究是基于Nederlandse Aardolie Maatschappij¿s三维地震数据库，选择应力场在感兴趣的时间均匀的域。我们将集中研究四个关键时期：第三纪和白垩纪。第三纪，侏罗纪和三叠纪的邦茨斯坦。将选择这些时间段内的活动断层，并分析其三维断层运动学。断层形态和运动学将用于确定区域应力使用安杰里尔方法（1990）。区域数据的比较将允许重建在CEB沉积期间活跃的主要远场应力。本文的研究结果将提供：1)改进了研究区域内CEB的动态演化模型；2)更好地理解CEB的构造反转过程，以及盐构造与区域应力场的相互作用。