SUMMARY

On  the  Permian/Triassic  boundary in Việt Nam

Đoàn Nhật Trưởng, Đặng Trần Huyên,
Nguyễn Xuân Khiển, Tạ Hoà Phương

The Meishan D section (Changxing Country, Zhejiang, South China) has been ratified as Global Stratotype Section and Point of the Permian/Triassic boundary. The P/T biostratigraphic boundary is defined by first appearance of Hindeodus parvus and the eventostratigraphic boundary - by mass extinction with lithological change. In Việt Nam, two Permian/Triassic boundary sections have been preliminary investigated and the conodont Hindeodus parvus has been found at one of them. Based on the mass extinction of Permian fauna and lithological change recorded from these sections, the eventostratigraphic boundary at both sections has been established. These are sections of potential for studying P/T biostratigraphic boundary in Việt Nam.

Ngày nhận bài: 28-5-2004
Người biên tập: Vũ Khúc