湖北神农架地区埃迪卡拉纪管状化石及其地层意义  

EDIACARAN TUBULAR FOSSILS FROM THE SHENNONGJIA AREA,HUBEI PROVINCE AND THEIR STRATIGRAPHIC SIGNIFICANCE

作　　者：杨犇[1] 尚晓冬[1] Michael Steiner 刘鹏举[1] YANG Ben;SHANG Xiao-dong;STEINER Michael;LIU Peng-ju(MNR Key Laboratory of Stratigraphy and Palaeontology,Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037;Department of Earth Sciences,Freie Universitcit Berlin,Berlin 12249)

机构地区：[1]自然资源部地层与古生物重点实验室,中国地质科学院地质研究所,北京100037 [2]Department of Earth Sciences,Freie Universitat Berlin,Berlin 12249

出　　处：《地层学杂志》2020年第4期448-454,共7页Journal of Stratigraphy

基　　金：国家自然科学基金(41972026、41902019、41872024);中国地质调查局地质调查项目(DD20190008)共同资助。

摘　　要：埃迪卡拉纪晚期出现的管状化石广布于世界各地,具有重要的地层指示意义。笔者近期于神农架地区水磨山剖面和天燕剖面灯影组顶部含砾白云岩中发现典型管状化石组合,包括Cloudina lucianoi、Sinotubulites baimatuoensis及一些壳体光滑的管状化石。此次发现扩大了此类化石在扬子板块的分布范围。结合其产出层位及化石组合特征,据此提出神农架地区含管状化石层位可与陕西宁强灯影组高家山段—碑湾段和三峡地区灯影组石板滩段含管状化石层位相对比。Ediacaran tubular fossils have been recovered globally indicating high importance on stratigraphic correlation.Here we report some typical tubular fossils from conglomeratic dolostone in the top Dengying Formation of Shuimoshan and Tianyan sections in Shennongjia area,Hubei Province,South China.The fossils include Cloudina lucianoi,Sinotubulites baimatuoensis and tubular fossils with smooth surface.The discovery expanded the distribution of the tubular fossils on the Yangtze Block.In consideration with their taxonomic and stratigraphic features,we correlate the fossil-bearing interval in Shennongjia area with the Gaojiashan and Beiwan members in the Ningqiang area of Shaanxi Province as well as the Shibantan Member in the Three Gorges Region of Hubei Province.

关 键 词：管状化石 埃迪卡拉纪 灯影组 神农架地区 

分 类 号：P534.1[天文地球—古生物学与地层学]