川西南区震旦系地层岩石变质了吗?这是大家十分关心的问题,因为它关系到寻找油气问题;牵涉到研究储渗空间的方法问题;涉及到沉积岩的阶段划分等问题。 在研究岩石中的有机物变质程度时,用挥发碳比能够获得良好效果,但它不一定能够反映出岩性的变质深浅。例如:四川侏罗系香溪群的煤层是有机物变质的典型,但其上下的泥岩砂岩却未曾发现什么变质标誌。 Is the Sinian stratigraphic rock in the southwest of Sichuan degenerated? This is a matter of great concern to all because it is related to the search for oil and gas problems, to the methods for studying the reservoir seepage space, and to the issues such as the stage division of sedimentary rocks. In the study of the degree of organic matter deterioration in rocks, the volatile carbon ratio can get good results, but it does not necessarily reflect the metamorphism of the lithology. For example, the coal seams of Xiangxi Group in Jurassic, Sichuan are typical of metamorphic organic matter, but no metamorphic marks have been found in mudstone sandstones above and below them.