Ni-Ir anomaly and fusulinid extinction across the Permian-Triassic boundary in Dongluo, Guangxi

• 出 处: Chinese Science Bulletin
• 发表日期: 1997年13期
• 关键词: Triassic Guangxi extinction Permian Cretaceous anomaly Tertiary shale Alvarez ni

SINCE Alvarez first used iridium anomaly to explain the Cretaceous-Tertiary impact eventand mass extinction, more than 70 sites of iridium-nickel anomalies have been found. The Per-mian-Triassic boundary extinction is more prominent than that of the Cretaceous-Tertiary.This leads us to make research on whether similar events happened during that period.

SINCE Alvarez first used iridium anomaly to explain the Cretaceous-Tertiary impact event and mass extinction, more than 70 sites of iridium-nickel anomalies have been found. The Per-mian-Triassic boundary extinction is more prominent than that of the Cretaceous-Tertiary.This leads us to make research on may similar happened happened during that period.