石油与天然气地质 ›› 1989, Vol. 10 ›› Issue (2): 158-169.doi: 10.11743/ogg19890209

• 论文 • 上一篇    下一篇

川中-川南过渡带地质发展特征

向鼎璞, 张小平, 吴大奎   

  1. 四川石油管理局地震资料处理解释中心
  • 收稿日期:1988-08-08 出版日期:1989-06-25 发布日期:2012-01-16

DEVELOPMENT CHARACTERISTICS OF THE TRANSITIONAL ZONE IN CENTRALSOUTH SICHUAN

Xiang Dingpu, Zhang Xiaoping, Wu Dakui   

  1. Seismic Interpretation Center, Sichuan Petroleum Administration
  • Received:1988-08-08 Online:1989-06-25 Published:2012-01-16

摘要:

本区加里东期有多次构造运动,对地质发展有重要影响。区内古隆起有三种型式:(1)加里东古隆起为渐变式,经过沉积隆起与剥蚀隆起的交替发展而形成;(2)印支期古隆起为突变式,原来仅有较弱的隆升,直至印支中期(泸州运动)才强烈隆升;(3)叠隆式,为加里东与印支期两次构造运动所形成。本区油气虽较分散,但点多、层多,是寻找非背斜隐蔽油气藏的重要地区。

Abstract:

The transitional zone in central-south Sichuan is a part of central Sichuan uplift.According to the exploration of a seismic section in this region,there had been tectonic movements between the Lower Cambrian and Middle-Upper Cambrian,the Middle-Upper Cambrian and Lower Ordovician,the Middle-Upper Ordovicion and the Wufeng Formation of the Upper Ordo-vician and the Silurian System as well,with obvious truncation and over-laps.Paleo-uplifts have three patterns in the present region:1.Gradual chang-ing pattern,represented by Caledonian paleo-uplift;2.Sudden changing pattern,represented by Luzhou paleo-uplift of the Indo-Chinese Epoch;3.Over laped uplift pattern resulted by Caledonian and Indo-China Movements.The stratigraphic thickness of Caledonian paleo-uplift differs from thatof Indo-Chinese ones in reverse.The land form during the Caledonian de-posit was high in the west and low in the east,but was reversed during the Variscian-Indo Chinese Epoch.The erosion surfaces of the Caledonian paleo-uplift in the north part of the region and that of the Indo-chinese paleo-uplift in the south may pro-bably form oil and gas pools of weathering crack,monadnock and karst types.