东北地区晚古生代地层划分与对比

对赤峰-开源断裂带以北、内蒙古贺根山以东的东北地区晚古生代地层进行了综合地层学研究。将上古生界划分为4个地层区11个地层分区;进行了岩石地层单位清理;在全区晚古生代建立了2个牙形刺带、9个■带、12个珊瑚带、16个腕足带、6个头足(含菊石)带、1个双壳带和7个植物带等共计53个生物带,其中前人建立42个带,此次新建11个带。根据岩石地层、生物地层研究资料,结合同位素测年数据确立了各地层分区的代表性岩石地层单位的时代,建立了该区多重地层划分对比表,为岩相古地理图的编制打下基础。

The Division and Correlation of the Late Paleozoic Strata in Northeast China

Integrative stratigraphy of the Upper Palaeozoic were studied in this paper. The research area was located in the north of Chifeng-Kaiyuan fracture zone, the east of the Hcgenshan Mountain of Inner Mongolia in Northeast China. The Upper Paleozoic strata was divided into 11 stratigraphic subregions in 4 stratigraphic regions; The litbos tratigraphic strata were reappraised;53 biozones were established including 2 conodont zones, 9 fusulinid zones, 12 coral zones,16 brachiopoda zones, 6 eephalopoda zones （embrace ammonite）, 1 bivalvia zone, and 7 floral zones. Among them 42 biozones were established by predecessors and 11 biozones were newly added. The representative lithostratigraphic unit era of the stratigraphic subregion were clarified in view of the rock strata,biostratigraphic study data,and the isotopic dating data. The multiple stratigraphic division and correlation table was established. These lay the foundation for compilation of the lithofacies palaeogeography maps.