三叠纪年代地层与生物复苏

二叠纪末大灭绝之后，三叠纪初残存期和复苏期生态系研究成为当今热点。这也是2005年5月在安徽巢湖召开的“三叠纪年代地层与生物复苏国际学术会议”上的主导论题。逐一介绍了会议学术报告的主题内容，以期提炼相关领域的学术关键和学科发展趋向。学术主题之一是早三叠世年代地层格架，尤其是印度阶―奥伦尼克阶界线层型；第二是二叠纪―三叠纪之交灭绝和环境事件的表现形式和过程；第三是二叠纪―三叠纪之交及早三叠世微生物岩及其代表的特殊生态系；第四是灭绝事件后三叠纪初一些关键生物类别的演变历程；第五是中生代初生态系复苏过程和型式；第六是早三叠世生物迟滞复苏的原因。

TRIASSIC CHRONOSTRATIGRAPHY AND BIOTIC RECOVERY

The study of the ecosystems in the survival and recovery time in the Early Triassic following the end-Permian mass extinction becomes a hotspot. It was also the leading topic at the International Symposium on Triassic Chronostratigraphy and Biotic Recovery held in Chaohu, Anhui Province from 23rd to 25th May 2005. All of the oral presentations are here summarized one by one and some key scientific subjects and the development in the field are abstracted. One of the key subjects reported at the symposium is the Early Triassic chronostratigraphy, esp. the GSSP for the Induan-Olenekian boundary; the second is the expression and process of biotic and environmental events during the Permian-Triassic transition; the third is the calcimicrobialite and the specific ecosystems at the Permian-Triassic boundary and in the Early Triassic; the fourth is the evolution and lineages of some key taxonomic groups in the Early Triassic ; the fifth is the recovery process and pattern of the ecosystems at the beginning of the Mesozoic; and the sixth is the causes of the delayed biotic recovery in the Early Triassic.