摘要
:针对目前全球上元古系命名上存在的分歧 ,从整个元古界系级单位划分命名的基本原则出发 ,结合末元古纪全球生物多样性的特点 ,提出了将全球上元古系用多细胞后生生物 (包括各种微体和宏体的多细胞动、植物 )首次大量的、以多样化和特色化形式广布全球这一重要事件给予正式命名 ,称其为“后生生物系 (纪 )”,简称为“后生系”(Metabiotian)这一新的命名方案不仅符合国际地层委员会 1989年通过的前寒武系划分方案中关于元古界系级单位划分命名的基本精神 ,而且充分体现了末元古纪全球生物发展演化的重要特色。同时有利于消除目前世界许多国家争用各自的地名来命名上元古系所造成的分歧。
To counter the divergence of the nomenclature of global Terminal Proterozoic System at present,the authors suggest that the nomenclature of the global Terminal Proterozoic System should be on the basis of the important biologic events,when a lot of metazoa and macroalgae fossils widespread occurred in the Terminal Proterozoic System on the earth.They made this suggestion after systematically discussing the characteristics of Neoproterozoic biologic diversity and emphasizing that the basic rules of subdivision and nomenclature of all the system units of Proterozoic were mainly based on the important geological events in the internalinoal stratigraphic chart (1989).Finally,they have put forward a new plan that the “Metabiotian System (period)” is nominated for the global Terminal Proterozocic System.
出处
《地质科技情报》
CAS
CSCD
北大核心
2000年第4期45-49,共5页
Geological Science and Technology Information
关键词
上元古系
命名
生物多样性
后生系
Terminal Proterozoic System
nomenclature,biologic diversity,Metabiotian System
