Tectonic Characteristics of Su-Lu Segment of Tan-Lu Fault Zone Derived from RS and Gravity Multi-Source Information
详细信息
- 责任者：Jiang Wenliang (Institute of Crustal Dynamics ; China Earthquake Administration ; Beijing 100085 ; China) ; Zhang Jingfa
- 刊名：Acta Geoscientica Sinica
- 出版年：2011
- 卷期：32(2)
- 关键词：断裂带 ; fracture zones ; 郯庐断裂带 ; Tancheng-Lujiang Fault Zone
- 页码：p.143-153
- 图表：5 illus., 2 tables, 32 refs.
- 分类号：0300
- issnNo：ISSN1006-3021
- isbnNo：CN11-3474/P
摘要
Tectonic characteristics of Su-Lu segment of the Tan-Lu fault zone were studied in this paper. The method of tectonic geomorphology was used to study tectonic activity and geomorphological features of Su-Lu segment in Late Quaternary. Then inhomogeneous features of crust density along Su-Lu segment were analyzed, and deep tectonic characteristics were studied.Geomorphological features, such as offset streams, fault scarps and linear tectonics, are developed along Su-Lu segment. The uplift of the Moho occurs obviously beneath Linshu and Sihong areas, and the upwelling of high density materials of the upper mantle and asthenosphere occurs along the fault. The density structure displays inhomogenous features laterally along the fault. The Bouguer gravity anomalies produced by the upper crust are correlated with the surface geology and topographic features.