中国南方古生界海相烃源岩的主变形期

Main deformation phases of the Paleozoic marine hydrocarbon source rocks in South China

中国南方海相碳酸盐岩层系中发育了多套烃源岩,它们在沉积之后经历了多期构造事件。在野外观测和地震剖面解释的基础上,对中国南方海相烃源岩的变形序列进行了剖析,甄别出4个变形期,分别为早古生代晚期(421～441 Ma)、晚三叠世(215～230 Ma)、晚侏罗世—早白垩世和早白垩世—第三纪,并指出中生代中晚期为主变形期,形成了不同尺度的叠加构造。

There are multiple sets of hydrocarbon source rocks developed in South China, which experienced several tectonic events. By analyzing deformation succession, four deformation phases are recognized for Paleozoic marine hydrocarbon source rocks in South China, on a basis of field observation and seismic section interpretation, i. e.,late Early Paleozoic （ 421 - 441 Ma）, Late Triassic （ 215 - 230 Ma）, Late Jurassic-Early Cretaceous and Early Cretaceous-Tertiary. It is suggested that the main deformation phases occur in the Middle-Late Mesozoic ,forming superimposed structures with different sizes.