石油与天然气地质 ›› 1992, Vol. 13 ›› Issue (1): 71-77.doi: 10.11743/ogg19920107

• 论文 • 上一篇    下一篇

西北地区白垩系的划分及与侏罗系的界线

张守安, 易荣龙, 李明   

  1. 地质矿产部石油地质综合大队 湖北 江陵 434100
  • 收稿日期:1991-07-31 修回日期:1991-10-06 出版日期:1992-03-25 发布日期:2012-01-16

CLASSIFICATION OF CRETACEOUS AND ITS BOUNDARY WITH JURASSIC IN NORTHWEST CHINA

Zhang Shouan, Yi Ronglong, Li Ming   

  1. Comprehensive Research Institute of Petroleum Geology, MGMR, Jiangling, Hubei
  • Received:1991-07-31 Revised:1991-10-06 Online:1992-03-25 Published:2012-01-16

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摘要：

本文将吐谷鲁群、克孜勒苏群、卡普沙良群、庙沟群、河口群、赤金桥组、新民堡群等及其相当岩层划归下白垩统;将艾里克湖组、东沟组、巴什基奇克组、苏巴什组、金刚泉群、马连沟群、民和组等及其相当岩层划归上白垩统。侏罗、白垩系的分界,以划在喀拉扎组与吐谷鲁群之间,苦水峡组与河口群之间,红水沟群与犬牙沟群之间,万秀群与东河群之间较宜。

关键词: 西北地区, 白垩系, 地层对比, 地层界线

Abstract:

According to the stratigraphic paleontological characteristics,the Tugulu,Kizilsu,Ka-pushaliang,Miaogou,Hekou,Xingmingbao,Donghe Groups and Chijingqiao,Wuerta,Dashuigou Formations,the lower part of the Quanyagou Group and their correspounding stratums are classified to Lower Cretaceous;the Ailikehu,Donggou,Bashijiqik,Kumutag,Subashi,Wulanshaohu,Minghe Formations and the Jinggangquan,Maliangou,the upper Quanyagou Groups and their equivelent stratums are classified to the Upper Creta-ceous.The boundary between the Jurassic and the Cretaceous is suggested to be set be-tween Kalazha Formation and Tugulu Group,Hongshan Formation and Tugulu Group,Shazaohe Group and Miaogou Group,Kushuixia Formation and Hekou Group,Hong-shuigou Group and Quanyagou Group,Wanxiu Group and Donghe Group.