Thermal history of deeply buried sedimentary rocks in the vicinity of salt diapirs (Schleswig-Holstein area)

盐底辟附近深埋沉积岩的热史（石勒苏益格-荷尔斯泰因地区）

• 批准号: 5403425
• 负责人: Professor Dr. Ralf Littke
• 金额: --
• 依托单位: Lehrstuhl für Organische Biogeochemie in Geo-Systemen (OBG)
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2003
• 资助国家: 德国
• 起止时间: 2002-12-31 至 2007-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5403425?language=en
• 关键词: Thermal; history; deeply; buried; sedimentary

A detailed study of the thermal evolution of deeply buried Mesozoic and Palaeozoic sedimentary rocks in the Schleswig-Holstein area is proposed to bridge the gap to adjacent areas in the Central European Basin studied previously. The Schleswig-Holstein area has a complex basin evolution reaching maximum burial and hence thermal maturation partly during Mesozoic (Jurassic) times and partly during the Neogene. Furthermore, it is characterized by the most intensive salt tectonics within the entire basin. As salt has a much higher thermal conductivity than other sedimentary rocks, the temperature and maturity distribution in the basin will be significantly affected by salt tectonics. Accordingly, it is one major goal of this project to study maturity evolution in the vicinity of salt domes. Many other sedimentary basins, including major oil and gas provinces, are also charaterized by abundant salt diapirs and other salt structures. Therefore, the results of this part can be applied to other basins as well. The German petroleum industry meanwhile agreed to allow sampling in the vicinity of two important salt structures within the Central European Basin. Finally high levels of maturation are to be expected in the Palaeozoic section of the Schleswig-Holstein area, but evolution of vitrinite maturation at such high maturation levels has not been studied sufficiently. Therefore laboratory experiments on maturation of prematured vitrinite should be perfomed. The results can be of great importance in other numerical basin modelling studies.

对石勒苏益格-荷尔斯泰因地区深埋的中生代和古生代沉积岩的热演化进行详细研究，以弥补与先前研究的中欧盆地相邻地区之间的差距。石勒苏益格-荷尔斯泰因地区盆地演化复杂，部分在中生代（侏罗纪）时期达到最大埋藏，因此部分在新近纪达到热成熟。此外，它的特点是最强烈的盐构造在整个盆地。由于作为盐具有比其它沉积岩高得多的热导率，因此盐构造对盆地内温度和成熟度的分布具有重要的影响。因此，研究盐丘附近的成熟度演化是本项目的主要目标之一。许多其他沉积盆地，包括主要的油气区，也以丰富的盐底辟和其他盐构造为特征。因此，本部分的研究成果也可以推广到其他盆地。与此同时，德国石油工业同意在中欧盆地内两个重要的盐结构附近进行取样。最后，预计石勒苏益格-荷尔斯泰因地区古生代剖面的成熟度较高，但在如此高的成熟度水平下镜质体成熟度的演化尚未得到充分研究。因此，有必要开展成熟前期镜质体的成熟实验。其结果对其他数值盆地模拟研究具有重要意义。