石油与天然气地质 ›› 1995, Vol. 16 ›› Issue (2): 132-137.doi: 10.11743/ogg19950206

• 论文 • 上一篇    下一篇

江汉盆地下第三系火山岩年代

徐论勋1, 阎春德1, 俞惠隆1, 王宝清1, 余芳权2, 王典敷2   

  1. 1. 江汉石油学院, 湖北荆沙, 434102;
    2. 江汉石油管理局勘探开发研究院, 湖北潜江, 433124
  • 收稿日期:1994-09-16 出版日期:1995-06-25 发布日期:2012-01-16

CHRONOLOGY OF PALEOGENE VOLCANIC ROCKS IN JIANGHAN BASIN

Xu Lunxun1, Yan Chunde1, Yu Huilong1, Wang Baoqing1, Yu Fangquan2, Wang Dianfu2   

  1. 1. Jianghan Petroleum institute, Jingsha, Hubei;
    2. Institute of Petroleum Exploration and Development, Jianghan Petroleum Administration, Qianjiang, Hubei
  • Received:1994-09-16 Online:1995-06-25 Published:2012-01-16

PDF (PC)

984

被引次数

25

摘要：

对江汉盆地下第三系23个重武岩样品K-Ar同位素年龄测定,并按不同层位进行等时线处理,表明各组样品的年龄分别为潜江组四段41.0Ma、荆沙组45.5Ma、新沟嘴组51.2Ma、沙市组62.4Ma,与所处的地层时代基本一致。据此,编制了与火山活动事件紧密相关的江汉盆地早第三纪地层地质年代表。

关键词: 地质年代学, K-Ar年龄, 火山岩储层, 早第三纪, 江汉盆地

Abstract:

The K-Ar isotopic ages of 23 Paleogene basalt specimens collected from Jianghan Basin were determined and isochrones were made according to different horizons.Isochron dating results are given as follows:the 4th member of Qianjiang Formation(Eq4)is 41.0 Ma;Jingsha Formation(Ej),45.5 Ma;Xingouzui Formation (Eχ),51.2 Ma;Shashi Formation (Es),62.4 Ma.The results are generally coincident with their stratigraphic times. Based on the results, the Paleogene geochronologic scale of the basin that is closely related to volanic activites has been made.