摘要
全球二叠系-三叠系界线(PTB)层型及点("金钉子")定位我国浙江省长兴县煤山D剖面,极大地推动了PTB及二叠系和三叠系研究进展。在简要介绍地层单位与全球界线层型与点建立的相关概念、术语和有关规定、地层划分的主要种类及其地层单位术语的基础上,以全球二叠系—三叠系界线层型及点(中国浙江省长兴县煤山D剖面)为研究实例,综述了该金钉子剖面牙形石生物地层和年代地层研究现状。煤山D剖面构建了目前全球最完整的PTB地层牙形石带序列,为研究二叠纪末大灭绝后生物残存和复苏过程提供了重要的时间坐标系,也为相关的地质事件研究奠定了坚实的基础。
The establishment of the Global Stratotype Section and Point (Golden Spike) of the PermianTriassic boundary (PTB) at the Meishan section D, Changxing, Zhejiang Province, China has greatly improved the researches on the PTB,Permian and Triassic. After a brief introduction to the concept, terminology and relational prescription, primary category of stratigraphic subdivision and terminology of stratigraphic unit, as a research example, this paper summarized the research work of conodont biostra'tigraphy and chronostratigraphy of the Meishan type section. The current detailed conodont biostratigraphy of the PTB at this section provided important time scale for studying the biotic survive and recovery process after the end-Permian mass extinction, and the relevant geological events.
出处
《地质科技情报》
CAS
CSCD
北大核心
2012年第5期23-42,共20页
Geological Science and Technology Information
基金
国家自然科学基金项目(40921062)
中国地质调查局项目(1212011220529)