石油与天然气地质 ›› 1987, Vol. 8 ›› Issue (4): 454-459.doi: 10.11743/ogg19870421

• 论文 • 上一篇    下一篇

华北地区环形构造与油气形成

陈光汉   

  1. 华北石油地质局地质研究大队
  • 收稿日期:1987-04-27 修回日期:1987-07-13 出版日期:1987-12-25 发布日期:2012-01-16

THE RING STRUCTURE AND FORMATION OF HYDROCARBON IN NORTH CHINA

Chen Guanhan   

  1. Ceological Research Brigade, North China Burear of Petroleum Geology
  • Received:1987-04-27 Revised:1987-07-13 Online:1987-12-25 Published:2012-01-16

摘要:

华北地区有10多个环形构造,分别组成四条北西—南东向的环形构造链,这是中新生代地幔热源活动和陆块漂移的结果,它们在一定条件下,可以形成断陷盆地,并赋存油气。

Abstract:

Ring structure is a kind of structural form formed in different geological times. A complete ring structure consists of inner ring, middle ring and outerring. The inner ring is the tractive-tensile area with basement arched upward.Normal faults and volcanic rocks developed and fault-subsided basin were formed there. The middle and outer rings are mainly compressive areas with folded arcs, granite arcs, overthrusts and nappes. More than ten ring structures are found in North China. They compose four NW-SE trending ring structural chains which are the traces of mantle heat source acted on shifting land block during the Meso-Cenozoic. The fault subsided basin formed in the late evolution stage of the raising of mantle heat source and crust expansion. If it bas proper size, depth and sedi-ments of great thickness, and also has source-reservoircap rock assemblage.it will certainly develop into a hydrocarbon basin. Oil and gas fields have been found in three ring structures and oil shows are discovered in another one in north China. All of them are related to Meso-Cenozoic fault-depressed basin.