石油与天然气地质 ›› 1992, Vol. 13 ›› Issue (4): 381-389.doi: 10.11743/ogg19920403

• 论文 • 上一篇    下一篇

巴彦浩特盆地东部古生代沉积的发现及其大地构造意义

袁效奇, 耿国仓   

  1. 长庆石油勘探局勘探开发研究院 甘肃 庆阳 745101
  • 收稿日期:1991-08-03 修回日期:1991-11-11 出版日期:1992-12-25 发布日期:2012-01-16

DISCOVERY OF PALEOZOIC SEDIMENTS IN EAST BAYANHOT BASIN AND ITS TECTONIC SIGNIFICANCE

Yuan Xiaoqi, Geng Guocang   

  1. Institute of Petroleum Exploration and Development, Changqing Petroleum Exploration Bureau
  • Received:1991-08-03 Revised:1991-11-11 Online:1992-12-25 Published:2012-01-16

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摘要：

地球物理和钻井资料证实,巴彦浩特盆地东部保存有较完整的古生代沉积。其中奥陶纪特马道克-阿伦尼格期,为稳定的华北地台型沉积,兰维思-兰代洛期属贺兰坳拉槽沉积体系;石炭纪杜内-维宪期,为相对稳定的海侵沉积,纳缪尔-维斯发期是贺兰坳拉槽再度复活形成贺兰碰撞谷的沉积。

关键词: 阿拉善地块, 巴彦浩特盆地, 奥陶系, 石炭系, 坳拉槽, 碰撞谷

Abstract:

Geophysical and drilling data-proved that Upper Paleozoic sediments of several thou-sand meters thick are preserved in east part of Bayanhot Basin,of which the Ordovician Tremadocian-Arenigian and Llanvirnian-Llandeilian are respectively typical platform de-posits and Helan aulacoge deposits;Carboniferous Tournaisian-Visean and Namurian-Westfalian are respectively steady transgressional deposits and Helan collisional valley de-posits.The discovery shows that the study region had not uplifted all the time.