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古地理学报 ›› 2011, Vol. 13 ›› Issue (3): 299-308. doi: 10.7605/gdlxb.2011.03.006

• 生物古地理学及古生态 • 上一篇    下一篇

湖北武汉下志留统坟头组化石组合及沉积环境*

纵瑞文1 刘琦1 龚一鸣1,2   

  1. 1 中国地质大学（武汉）地球科学学院，湖北武汉 430074
    2 中国地质大学生物地质与环境地质国家重点实验室，湖北武汉 430074
  • 收稿日期:2010-12-05 修回日期:2011-02-26 出版日期:2011-06-01 发布日期:2011-06-01
  • 通讯作者: 通讯作者简介 龚一鸣，男，中国地质大学（武汉）教授，主要从事泥盆纪、遗迹化石和沉积地质研究，E-mail:ymgong@cug.edu.cn E-mail:zong_1658@126.com
  • 作者简介:纵瑞文，男，1988年生，2007级在读本科生，已被保送攻读本校古生物学与地层学硕士研究生。通讯地址：湖北省武汉市洪山区鲁磨路388号中国地质大学（武汉）地球科学学院011072班；邮政编码：430074；E-mail:zong_1658@126.com。
    通讯作者简介 龚一鸣，男，中国地质大学（武汉）教授，主要从事泥盆纪、遗迹化石和沉积地质研究，E-mail:ymgong@cug.edu.cn。
  • 基金资助:
    国家自然科学基金项目(批准号: 40872001，41072252，40921062)和国家地质学理科基地人才培养基金项目（编号：J0830520）联合资助

Fossil association and sedimentary environments of the Lower Silurian Fentou Formation in Wuhan，Hubei Province

Zong Ruiwen1, Liu Qi1, Gong Yiming1,2   

  1. 1 Faculty of Earth Sciences，China University of Geosciences(Wuhan)，Wuhan 430074， Hubei
    2 State Key Laboratory of Biogeology and Environmental Geology，China University
    of Geosciences，Wuhan 430074，Hubei
  • Received:2010-12-05 Revised:2011-02-26 Online:2011-06-01 Published:2011-06-01
  • About author:Zong Ruiwen，born in 1988，is a candidate for his bachelor degree in China University of Geosciences(Wuhan)，and is engaged in studies of paleontology and stratigraphy.
    About the corresponding author Gong Yiming is a professor of China University of Geosciences(Wuhan)，and is mainly engaged in researches of Devonian，trace fossils and sedimentary geology.

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摘要： 文中报道了在武汉市铁箕山新发现的下志留统坟头组剖面。该剖面所在位置交通方便，出露较好，化石丰富，发现有三叶虫、腕足类、双壳类、腹足类、头足类、喙壳类、海百合、锥石、海星、鱼类及遗迹化石等，初步鉴定出13属17种。根据该剖面中的化石组合面貌及与邻区的对比认为，武汉地区坟头组的时代应为早志留世(兰多维列世)特列奇期。通过对该剖面化石组合特征、遗迹化石及其他相标志的分析，确定其下部为高能前滨环境，中上部为近滨和远滨环境。本剖面和相关化石材料及相标志的发现进一步丰富了武汉地区下志留统的生物面貌，并且为跨区域之间的地层和古环境对比提供了新资料。最后，作者建议取消武汉地区锅顶山组这一地层单位。

关键词: 下志留统, 坟头组, 化石组合, 武汉, 沉积环境

Abstract: The paper reports a new section of the Lower Silurian Fentou Formation which has been measured in Tiejishan Hill.This well-exposed section situates in the southeast of Wuhan，Hubei Province，just five kilometers from the downtown of Wuhan.Abundant fossils have been collected from this site，they were identified as 13 genera with 17 species in total，including trilobites，brachiopods，bivalves，gastropods，rostroconcha and piscis.Some of the species such as Coronocephalus wuningensis，C.gaoluoensis，Kailia intersulcata，Latiproetus sp.，Striispirifer shiqianensis，Striispirifer disparatus，Howellella sp.，Nucleospira calypta are common in the Fentou Formation of Jiangsu and Anhui Provinces，the Shamao Formation of west of Hubei Province and the Xiushan Formation in southwest China; Technophorus peregriuns has been reported from the upper part of the Xiushan Formation in Guizhou Province before，and also from both of the Wangjiawan Formation and Ningqiang Formation of Shaanxi Province.Orthonota perlata occurs frequently in the Fentou Formation in the Lower Yangtze River region.Based on biostratigraphic correlation，fossil assemblage from the Fentou Formation in Wuhan area belongs to the Early Silurian(Telychian，Llandovery). The lower part of the Fentou Formation might be deposited in a foreshore setting with a high energy，and the middle-upper part of this formation might be formed in an inshore and offshore setting with a lower energy.At last, the authors propose to cancel the stratigraphic unit of the Guodingshan Fomation in Wuhan area.

Key words: Lower Silurian, Fentou Formation, fossil association, Wuhan, sedimentary environment

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