石油与天然气地质 ›› 2006, Vol. 27 ›› Issue (2): 152-158.doi: 10.11743/ogg20060203

• 盆地演化与构造-沉积作用 • 上一篇    下一篇

鄂尔多斯盆地侏罗纪早中期甘陕古河的演化变迁

赵俊兴, 陈洪德   

  1. 成都理工大学, 沉积地质研究院, "油气藏地质及开发工程"国家重点实验室, 四川, 成都, 610059
  • 收稿日期:2006-02-13 出版日期:2006-04-25 发布日期:2012-01-16
  • 基金资助:

    国家重点基础研究发展规划(973)项目(2003CB214601)

Evolution of Gan-Shaan paleochannel during Early and Middle Jurassic in Ordos basin

Zhao Junxing, Chen Hongde   

  1. Chengdu University of Technology, Chengdu, Sichuan, 610059
  • Received:2006-02-13 Online:2006-04-25 Published:2012-01-16

摘要:

鄂尔多斯盆地侏罗纪早中期沉积前经过印支运动强烈的构造抬升,使上三叠统延长组遭受不同程度的剥蚀及河谷下切作用,形成了起伏不平的古地形。在侏罗纪早期发育了甘陕古河、庆西等5大古河,其中甘陕古河为主河道。在甘陕古河流域,从富县组到延安组各个时期具有不同的沉积与古地理特点,并一起反映了盆地的构造沉积演化历程。

关键词: 古地貌, 富县组, 侏罗系, 甘陕古, 河延安组, 鄂尔多斯盆地

Abstract:

The Upper Triassic Yanchang Fm underwent denudation and incision of river valley to different degrees before the deposition of Lower and Middle Jurassic in Ordos basin due to the strong tectonic uplifting du-(ring) Indosinian movement,resulting in rolling paleotopography.Five major paleo-streams,including Gan-Shaan and Qingxi,were developed in early Jurassic'of which Gan-Shaan paeo-stream was the main stream channel.In the Gan-Shaan paleo-stream drainage area, the strata from Fuxian Fm to Yan'an Fm have different sedimentary and palaeogeographic characteristics,and they altogether reflect the structural and sedimentary evolution history of the basin.

Key words: Gan-Shaan paleo-stream, palaeogeomorphology, Fuxian Formation, Jurassic, Yan'an Formation, (Ordos) basin

中图分类号: