Multiple Division And Correlation Of Lower Paleozoic Strata In Northeast China

Multiple stratigraphic division and correlation of Lower Paleozoic are proceeded using integrated stratigraphy in Northeastern China which include east Inner Mongolia Autonomous Region, most of Liaoning Province, Heilongjiang Province and Jilin Province. On the base of system analysis of predecessors' material, the North China Stratigraphic Province and North Xingjiang & Xing'an Stratigraphic Province as the contrast units, Cambrian section of Baishan of Jilin and Huma of Heilongjiang, Ordovician section of Baishan of Jilin and Huma of Heilongjiang, Silurian section of Jilin of Yongji and Nenjiang of Heilongjiang are selected as typical sections of Early Paleozoic in Northeast of China. The lithostratigraphic units of typical section are checked up and revised in this article. The lithostratigraphic units and lithostratigraphic series which accord with stratigraphic regulation are revised and improved. The fossil assemblage zone series and biostratigraphy frame of every layer are straightened out on the base of system summarization on paleontology information. The chronostratigraphic units of typical section are classified according to the newest international geological time division standard (2007 edition) on the base of multidisciplinary analysis of rock, Paleontological fossils, isotopic age, volcanic activity and so on. The article firstly revises the boundary between Series of Cambrian according to the new division standard of four Series ten Stages in Cambrian. The chronostatigraphic units' boundary of Ordovician and Silurian are arranged, too. The chronostratigraphic frame of Eopaleozoic in Northeast China is found after arrangement of relationship of correspondence between fossil assemblage zone series and lithostratigraphic series and definition of lithostratigraphic attachment. Further, preliminary regional contrast is proceeded which may lays the foundation for the entire area scope stratigraphic division and correlation.