Study on a Terrestrial Permian-Triassic Boundary Section―Zhejue Section, Weining County, Guizhou Province, China

摘要

The Zhejue Section is an excellent terrestrial Permian-Triassic boundary (TPTB) section not only for its convenient accessibility and good outcrop, but also for its abundant fossils. In addition, there are two claystone beds that were formed by events across the Permian-Triassic boundary (PTB) at this section. The claystones provide a bridge for high-resolution correlation between marine and terrestrial PTBs. Another advantage is that the PTB at the Zhejue Section can be correlated with that of littoral and neritic facies by tracing westwards. Synthesized stratigraphic studies, including biostratigraphy, eventostratigraphy (susceptibilities and carbon isotopes across the TPTB, and microspherules found in the boundary claystones) and sequence stratigraphy, are carried out at this section.