Characteristics of gravity field and faulted structure in Tuha Basin
详细信息
- 责任者：Shen Chen (College of Oil and Gas Resources ; Xi＇an Shiyou University ; Xi＇an 710065 ; China) ; Yuan Bingqiang
- 刊名：Fault-Block Oil and Gas Fields
- 出版年：2012
- 卷期：19(4)
- 页码：p.445-449
- issnNo：ISSN1005-8907
- isbnNo：CN41-1219/TE
摘要
In order to study the structural characteristics of Tuha Basin, characteristics and causes of gravity field of the study area have been discussed and analyzed, and the faulted structure system has been inferred through collecting and processing the existing gravity survey data of the area. The gravity high belt near west-east trending reflects the development features of Late Paleozoic in the southern part of study area. The gravity low belt is caused by basal depression in middle part and the northern part . Regional gravity high and gravity low reflect the regional uplift and depression structures. Developed faults are mainly north-east trending and west-east trending, which control the basin boundary and the distribution of developed formation within basin. Huangtiau bulge of Liaodun uplift region can be further divided into two structural units, namely North-West depression and Huangtian bulge. Cap rock of Tuba Basin is Mesozoic and Cenozoic, in which maximum thickness is about 2,000 m in Jurassic.