从放射虫生物地层学、黏土矿物事件地层学和有机碳同位素地层学方面对广西柳桥地区东攀二叠系-三叠系深水相剖面进行了研究,并与浙江煤山剖面(GSSP)同期地层进行了对比。结果表明,东攀剖面上二叠系-三叠系界线处与煤山剖面具有较好的可比性:①东攀剖面放射虫A.yaoi带可以与煤山剖面的Clarkina changxingensis-C.postwangi-C.postsubcarinata-C.deflecta组合带对比;②两剖面都具有性质相似、廷伸稳定的界线黏土岩;③在两剖面界线黏土岩中,有机碳同位素组成都发生了巨减。
Multidisciplinary stratigraphic data were analyzed from a well-preserved deep-water PTB section (Dongpan section) and used to define and correlate the PTB in Liuqiao area,Guangxi. The correlation was also conducted well by radiolarian biostratigraphy, claystone eventostratigraphy and organic carbon isotope stratigraphy between Dongpan section and Meishan section. The results show some simillar stratigraphic characteristics in both sections, including: ①A. yaoi assemblage of radiolarian in Dongpan section corresponds to Clarkina changxingensis-C, postwangi-C, postsubcarinata-C, deflecta zone of conodont in Meishan section;②there are boundary claystones originated from volcanoclastic rocks in both sections; and ③ the most negative excursion of δ(^13 Corg) values found in the boundary claystone bed in both sections.