Studying Basement Fault Division in Southeast Hainan Basin of the South China Sea Using Gravity Horizontal Gradient Vector Method
详细信息
- 责任者：Liu Bing (Key Laboratory of Marginal Sea Geology ; South China Sea Institute of Oceanology ; CAS ; Guangzhou 510301 ; China) ; Wu Shimin
- 刊名：Journal of Tropical Oceanography
- 出版年：2011
- 卷期：30(5)
- 关键词：重力异常 ; gravity anomaly ; 断裂 ; fractures ; 琼东南盆地 ; Qiongdongnan Basin
- 页码：p.74-80
- 图表：4 illus., 33 refs.
- 分类号：1600
- issnNo：ISSN1009-5470
- isbnNo：CN44-1500/P
摘要
Basement fault is an associated structure with the basin. The deposition in a basin and the tectonic style as well as the distribution of resources are determined by basement faults. The gravity horizontal gradient vector data are obtained from the analysis of the Bouguer anomaly. The authors find 48 basement faults in the basin using the gravity horizontal gradient vector data, which are divided into three ranks,in-cluding five first rank faults, eight second rank faults, and 35 third rank faults. Comparing these findings with the results using other geological and geophysical methods such as seismic profiles, the authors find all results are consistent in terms of the main tec-tonic structure. However, the gravity horizontal gradient vector method has the advantages of being inexpensive,easy,and intuitive.
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