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

本文提出对石勒苏益格-荷尔斯泰因地区深埋的中生代和古生代沉积岩进行详细的热演化研究，以弥补与中欧盆地邻近地区研究的空白。石勒苏益格-荷尔斯泰因地区是一个复杂的盆地演化过程，在中生代（侏罗纪）和新近纪（第三纪）期间，盆地演化达到了最大埋藏期和热成熟期。此外，它还具有整个盆地内最强烈的盐构造特征。由于盐的热导率远高于其他沉积岩，因此盆地内的温度和成熟度分布将受到盐构造的显著影响。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，包括主要的油气省，也以丰富的盐底辟和其他盐构造为特征。因此，本部分的研究结果也可应用于其他盆地。与此同时，德国石油工业同意在中欧盆地两个重要的盐构造附近取样。最后，在石勒苏益格-荷尔斯泰因地区的古生代剖面中，预计将出现高水平的成熟，但在这种高成熟水平下镜质组的成熟演化尚未得到充分的研究。因此，应在室内对未成熟镜质组进行成熟实验。研究结果对其他数值盆地模拟研究具有重要意义。

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.