The Biostratigraphic Correlation of the Permian-Triassic Boundary in Jinzhong Section,Weining,Guizhou,South China
Qiu Xincheng
Tong Jinnan
Tian Li
Chu Daoliang
Song Ting
Li Dongdong
Abstract：The Permian-Triassic extinction event,which was associated with major global environmental changes,was the most significant one in the Phanerozoic.However,fossil records around the Permian-Triassic boundary in the terrestrial section are not complete compared with those in the marine section,and the precise time framework is not available.Thus the study of the Permian-Triassic boundary in terrestrial section has been hot and complicated.The Jinzhong section located in the eastern mar-gin of the Kangdian Continent,near the transitional facies zone of the Permian and Triassic,can be compared with the marine section and terrestrial section at the same time in this period.The Jinzhong section has abundant fossils,including bivalve (4 genus 6 species),conchostracans (2 genus 4 species),plant fossils (9 genus)and brachiopods (1 genus).According to the age of the conchostracans fossil assemblages Euestheria gutta-Palaeolimnadia xuanweiensis ,the plant fossil assemblages Annale-pis sp.-Peltaspermum sp.and the bivalve fossil assemblages Pteria ussurica variabilis-Neoschizodus orbicularis ,the Permian-Triassic boundary in the Jinzhong section is at the bottom of Kayitou Formation.In addition,the conchostracans fossil assem-blages Euestheria gutta-Palaeolimnadia xuanweiensis and the bivalve fossil assemblages Pteria ussurica variabilis-Neoschizo-dus orbicularis can be used as a reliable marker of early Triassic in stratigraphic division and correlation in the marine-continen-tal transitional facies in South China.
Keywords：Permian-Triassic boundarybiostratigraphypaleobiolgyJinzhong sectionstratigraphy
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：14( 1709-1722 )