宋妍妍,张元动,王志浩,方翔,马譞,刘鹏举

• 1:中国地质科学院地质研究所
• 2:国土资源部地层与古生物重点实验室
• 3:现代古生物学和地层学国家重点实验室
• 4:中国科学院南京地质古生物研究所和生物演化与环境卓越创新中心资源地层学与古地理学重点实验室

摘要(Abstract)：

奥陶系庙坡组在中扬子地区广泛分布,其中湖北宜昌真金、重庆城口大槽和蓼子口等地的庙坡组均含丰富的桑比期笔石动物群,为华南桑比期地层的高精度划分对比提供了重要依据。宜昌地区庙坡组自下而上可识别出中奥陶统达瑞威尔阶"Hustedograptus teretiusculus带"和上奥陶统桑比阶的Nemagraptus gracilis带;城口地区的庙坡组底界已进入N.gracilis带上部,比宜昌的庙坡组之底高出半个甚至一个笔石带。这一现象证实庙坡组底界在中扬子区具有明显的穿时性。

关键词(KeyWords)： 生物地层;笔石;穿时;庙坡组;奥陶系;湖北;重庆;中扬子区

Abstract:

Keywords:

基金项目(Foundation): 中国地质调查局项目(批准号:121201102000150010-06);; 现代古生物学和地层学国家重点实验室开放课题基金(批准号:163111);; 国家科技部项目(批准号:2013FY111000);; 中国科学院先导科技专项(XDB10010100,XDPB05)共同资助

作者(Author): 宋妍妍,张元动,王志浩,方翔,马譞,刘鹏举

DOI: 10.19839/j.cnki.dcxzz.2018.02.002

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