石油与天然气地质 ›› 2001, Vol. 22 ›› Issue (2): 105-107.doi: 10.11743/ogg20010204

• 油气空间 • 上一篇    下一篇

皖南上溪群中的虫牙类和疑源类化石及其地质意义

陈冠宝1, 尹磊明2, 徐树桐1   

  1. 1. 安徽省地质科学研究所, 安徽合肥230001;
    2. 中国科学院南京地质古生物研究所, 江苏南京210008
  • 收稿日期:1999-12-27 出版日期:2001-06-25 发布日期:2012-01-16
  • 基金项目:

    本文为国家自然科学基金(编号:49372137)和安徽省地质矿产局联合资助项目成果之一

FOSSILS OF SCOLECODONT AND ACRITARCH FROM SHANGXI GROUP IN SOUTHERN ANHUI AND THEIR GEOLOGICAL SIGNIFICANCE

Chen Guanbao1, Yin Leiming2, Xu Shutong1   

  1. 1. Anhui Institute of Geology, Hefei Anhui;
    2. Nanjing Institute of Geology and Palaeontology, Academia Sinica, Nanjing
  • Received:1999-12-27 Online:2001-06-25 Published:2012-01-16

PDF (PC)

712

被引次数

14

摘要：

"江南古陆"东北端上溪群中,发现了虫牙类化石和疑源类化石组合,为这套地层的准确定时,提供了直接证据.经鉴定,这一化石及化石组合的时代为寒武-奥陶纪,而不是以往所认为的中元古代.这些化石的发现说明依据岩体同位素年龄确定围岩年龄具有不确定性,另外,这一发现对研究该区的构造演化史具有重要意义.

关键词: "江南古陆", 虫牙类和疑源类化石, 上溪群, 皖南地区

Abstract:

Whether the distributive province of Shangxi Group metamorphosed strata in southern Anhui is an old land or an orogenic belt is quite controversial by geologists, but the age of the metamorphosed strata is very important to solve this problem. The scolecodonts and acritarchs reported here are new discoveries . They provide a direct evidence to the recognition of their ages and in the meantime some problems about the country rock ages determinated by the isotopic ages of intrusive bodies are presented. This discovery possesses important significance in the study of tectonic evolution of this area.

Key words: Jiangnan Old Land, scolecodont, Acritarch, Shangxi Group, southern Anhui

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