论文摘要
The most drastic biotic event in the whole Phanerozoic, which occurred in the transitional period between latest Permian and Early Triassic, caused the biggest mass extinction and the most profound ecosystem reconstruction process in the geological age.As for the potential reasons, the couple of secondary disasters(e.g., global warming, anoxic) leaded by the volcanic events were considered as the main trigger mechanism.Recently, pyrite framboids is a widely used to indicate the redox condition of oceanic environments, especially to track how anoxic event caused the extinction and delayed the reconstruction process in the Permian–Triassic transitional period.This study analyzed the size distribution of pyrite framboids from the uppermost Permian to Lower Triassic at Liuzhi section, Guizhou Province, and revealed the marine anoxic event from the latest Changhsingian to Induan in this region.Significantly, this new study case shows that the redox condition of marine environment is fluctuant in the Lower Triassic, and abundant benthic fossils occur in the certain layers where possess higher oxygen content at Liuzhi section.
论文目录
文章来源
类型: 国际会议
作者: Jing DOU,Yang ZHANG
来源: 第一届亚洲古生物学大会—暨中国古生物学会成立90周年纪念 2019-11-17
年度: 2019
分类: 基础科学
专业: 生物学,地质学
单位: School of Earth Sciences and Resources, China University of Geosciences(Beijing)
分类号: Q91;P534.4
页码: 77
总页数: 1
文件大小: 221k
下载量: 8