石油学报 ›› 1992, Vol. 13 ›› Issue (2): 121-126.DOI: 10.7623/syxb199202020

• 论文 • 上一篇    下一篇

江汉盆地西北缘下第三系古地磁特征及底界

张师本1, 高琴琴1, 刘椿2, 金增信2, 鲁连仲3   

  1. 1. 江汉石油管理局勘探开发研究院;
    2. 中国科学院地质研究所;
    3. 中国地质大学 武汉
  • 收稿日期:1991-02-18 出版日期:1992-04-25 发布日期:2013-07-08

PALEOMAGNETIC CHARACTERISTICS OF EOGENE SYSTEM AND ITS BASAL BOUNDARY ON NORTHWEST MARGIN OF JIANGHAN BASIN

Zhang Shiben1, Gao Qinqin1, Liu Chun2, Jin Zengxin2, Lu Lianzhong3   

  1. 1. Institute of Exploration & Development, Jianghan Petroleum Administration;
    2. Institute of Geology, Academia Sinica;
    3. China University of Geosciences
  • Received:1991-02-18 Online:1992-04-25 Published:2013-07-08

摘要: 本文通过对江汉盆地西北缘下第三系剖面的研究,建立了下第三系地磁极性年代系统,得出了地层形成时期的古纬度;在前人所划下第三系中发现了典型的晚白垩世介形类Talicyprideachinensis,Cypria triangularia等,结合地磁极性年代,将第三系底界上移45.3m.

关键词: 江汉盆地, 早第三纪, 古地磁, 古地磁地层学, 生物地层学, 地层剖面, 地层划分

Abstract: Based on the studies of the outcrop of Eogene System on the northwest margin of Jianghan Basin,the following results have been obtained:establishment of Eogene paleomagnetic polar time table,Eogene paleolatitude at that area and a discovery of upper Cretaceous index fossil Talycyprideu chinensis in previous"Eogene System".In consideration of the discovery and paleomagnetic time table,the Tertiary basal boundary has been corrected by moving 45.3m upward.