在沉积岩中粘土矿物是分布最广的一种矿物,它不仅存在于占沉积岩70%以上的泥岩及页岩中,而且在砂岩、石灰岩……等沉积岩中也有一定的含量,因而对粘土矿物在成岩作用过程中的转变的研究就具有普遍意义。粘土矿物这一质点性层状硅酸盐,对地球化学环境的变化的反映又十分敏感,因而选择这类矿物的转变,作为标志是十分理想的;而这些标志又直接或间接指示着生油成气的成熟度。 Clay minerals are the most widely distributed minerals in sedimentary rocks. They are not only found in mudstone and shale, which accounts for more than 70% of sedimentary rocks, but also in some sedimentary rocks such as sandstone, limestone, etc. Therefore, The study of the transformation in the process of diagenesis has universal meaning. Clay minerals, a particulate phyllosilicate, are also very sensitive to changes in the geochemical environment and therefore the choice of such minerals is ideal as a marker; these markers, in turn, directly or indirectly indicate the origin of oil Into the gas maturity.