Structural and geophysical characterization of the Messinian evaporites and their tectonic evolution in the Levant Basin

黎凡特盆地墨西拿蒸发岩的构造和地球物理特征及其构造演化

• 批准号: 29591041
• 负责人: Professor Dr. Christian Hübscher
• 金额: --
• 依托单位: Institut für Geophysik (IfG)
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/29591041?language=en
• 关键词: Structural; geophysical; characterization; Messinian; evaporites

This project aims on the advanced understanding of the structure and dynamics of the massive Messinian evaporites in the eastern Mediterranean. Owing to its well known geometry the solitary Levant Basin can be considered as a natural laboratory, where the deposition and initial tectonics of evaporites and the early development of potential hydrocarbon reservoirs, respectively, can be investigated. Previous studies pointed towards a complex evaporite stratigraphy and both syn- and post-depositional deformation. Furthermore, there are hints for coupled fluid flow through or out of the evaporitic succession, which apparently contradicts the established assumption of impermeable salts. In the past, any advanced analysis of the observed features has been prevented since no appropriate geophysical data were accessible to the scientific community. Recently, industrial multi-channel seismic data of outstanding quality (7.35 km offset, 144 fold, 9.1s TWT) have been released to the University of Hamburg. With this data we intend to parameterize the individual evaporitic sequences and fluid related features by means of seismic attributes and, consequently, unravel the evolutional history of the evaporites and related processes like fluid flow and intense mass wasting. From this project and together with international partners who hold 3D- seismic data from the same area, possible drill sites will be determined for a future IODP proposal.

该项目旨在深入了解地中海东部巨大的梅西尼亚蒸发岩的结构和动力学。孤立的莱凡特盆地由于其众所周知的几何形状，可以被视为一个天然实验室，在那里可以分别研究蒸发岩的沉积和初始构造以及潜在油气藏的早期发展。前人的研究指向复杂的蒸发岩地层和同沉积及后沉积变形。此外，还有耦合流体流过或流出蒸发序列的迹象，这显然与已建立的不渗透盐的假设相矛盾。过去，由于科学界无法获得适当的地球物理数据，因此无法对观测到的特征进行任何高级分析。近日，质量出众的工业多道地震数据(7.35公里炮检距、144倍、9.1s行波)已向汉堡大学发布。利用这些数据，我们打算通过地震属性将各个蒸发序列和与流体有关的特征参数化，从而揭示蒸发岩的演化史和相关的过程，如流体流动和强烈的质量损耗。根据该项目，并与持有同一地区三维地震数据的国际合作伙伴一起，将为未来IODP提案确定可能的钻探地点。