Analysis on Earthquake-Induced Soft-Sediment Deformation Structures in the Cambrian Dachenling Formation in the Tongcun Village, Zhejiang Province
详细信息
- 责任者：Liu Lijie (East China Institute of Technology ; Fuzhou 344000 ; China) ; Guo Fusheng
- 刊名：Acta Sedimentologica Sinica
- 出版年：2012
- 卷期：30(5)
- 关键词：震积岩 ; seismites ; 软沉积物变形 ; soft sediment deformation ; 浙江 ; Zhejiang Province
- 页码：p.795-805
- 图表：5 illus., 2 plates, 1 table, 40 refs.
- 分类号：0803
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
Through three horizons of soft sediment deformation events with earthquake-driven on the Cambrian Dachenling Formation in the Tongcun village in Zhejiang province, the abundant soft sediment deformation are seismic micro-fractures, micro-folding and liquefied structures. By observing and counting about special characteristics and properties of event horizons of the soft sediment deformation, and distinguishing the similar structures without earthquake-driven, these indicate that earthquake was the driven force. The discovery of three seismite events layers indicated that the deposition period of Dachenling formation is the period of paleoseimic occuring frequently. Counting the seismic disturbance and epicentral distance in the three events layer estimate the layer Ⅱ and layer Ⅲ magnitude are 6-7 level and about 6 level, and the autherand other preliminary view that the layers without the earthquake zone maybe exist molan tooth. So,the identification mark and lithological sequence of seismite get perfect,the understanding get deepening about the sedinentation of cambrian Dachenling formation resulting from seismic events in the west of Zhejiang Province.