石油与天然气地质 ›› 1983, Vol. 4 ›› Issue (2): 202-208.doi: 10.11743/ogg19830208

• 论文 • 上一篇    下一篇

华北断块区中生代大型沉积盆地的发育特征

张抗   

  1. 中国科学院地质研究所
  • 收稿日期:1982-03-22 出版日期:1983-06-25 发布日期:2012-01-16

THE EVOLUTION PROPERTIES OF A LARGE MESOZOIC SEDIMENTARY BASIN IN NORTH CHINA FAULT-BLOCK REGION

Zhang Kang   

  1. Institute of Geology, Academica Sinica
  • Received:1982-03-22 Online:1983-06-25 Published:2012-01-16

摘要:

华北断块区[1、2]的中生界有较好的含油气远景。因此,对它的研究,不但有重要的理论意义,而且富有实际价值。 前人对华北区中生代的地层和构造作了相当多的研究工作,积累了丰富的资料。一般认为,从三叠纪起,华北区的沉积呈"东西分异",即在华北区西部形成鄂尔多斯盆地,而中部和东部则为隆起区,其上仅有孤立的小型盆地。这一认识,在地质界有着深远的影响[3、4]

Abstract:

It has been considered for a long time that differences in sedimentation had existed between the eastern and the western parts in the North China faultblock region since the Trassic,i.e. there was an isolated sedimentary basin in the west (Ordos),and a large uplift with only a few small basins in the east.According to data collected recently from geological and seismic prospecting,the author suggests that as early as Trassic,there existed a entire large sedimentary basin at least ranging from the western edge of Ordos to the southern part of the North China plain. Sediments in this area are similar to those of upper Paleozoic,which are differentiation in the north and south. During the Middle Jurassic,the basin reduced and disintegrated,the south and north edges of the North China fault-block region as well as both the north and middle segments of Taihang Mountains uplifted. It was not until the Early Cretaceous that Ordos basin formed.Seismic prospecting has revealed that the sediments greater than 6000m of Mesozoic and upper Palcozoic have bccn found in the southward of Shijiazhuang-Dezhou region. This has also been proved by drilling,and the thickness of Mesozoic sediments may greater than that in southern Ordos and Jiyuan areas. So it is predicted that they might be well promissing to oil and gas.