| DOI: | 10.1007/s00531-013-0891-7
|
| 论文题名: | Active tectonics of Himalayan Frontal Fault system |
| 作者: | Thakur V.C.
|
| 刊名: | International Journal of Earth Sciences
|
| 出版年: | 2013
|
| 卷: | 102, 期:7 | | 起始页码: | 1791
|
| 结束页码: | 1810
|
| 语种: | 英语
|
| 英文关键词: | Active faults
; Out-of-sequence faulting
; Paleoseismology
; Sub-Himalaya zone
; Surface ruptures
|
| Scopus关键词: | active fault
; earthquake rupture
; fault propagation
; fault scarp
; hanging wall
; paleoseismicity
; plate boundary
; plate tectonics
; Himalayas
; Siwalik Hills
|
| 英文摘要: | In the Sub-Himalayan zone, the frontal Siwalik range abuts against the alluvial plain with an abrupt physiographic break along the Himalayan Frontal Thrust (HFT), defining the present-day tectonic boundary between the Indian plate and the Himalayan orogenic prism. The frontal Siwalik range is characterized by large active anticline structures, which were developed as fault propagation and fault-bend folds in the hanging wall of the HFT. Fault scarps showing surface ruptures and offsets observed in excavated trenches indicate that the HFT is active. South of the HFT, the piedmont zone shows incipient growth of structures, drainage modification, and 2-3 geomorphic depositional surfaces. In the hinterland between the HFT and the MBT, reactivation and out-of-sequence faulting displace Late Quaternary-Holocene sediments. Geodetic measurements across the Himalaya indicate a ~100-km-wide zone, underlain by the Main Himalayan Thrust (MHT), between the HFT and the main microseismicity belt to north is locked. The bulk of shortening, 15-20 mm/year, is consumed aseismically at mid-crustal depth through ductile by creep. Assuming the wedge model, reactivation of the hinterland faults may represent deformation prior to wedge attaining critical taper. The earthquake surface ruptures, ≥240 km in length, interpreted on the Himalayan mountain front through paleoseismology imply reactivation of the HFT and may suggest foreland propagation of the thrust belt. © 2013 Springer-Verlag Berlin Heidelberg. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884399680&doi=10.1007%2fs00531-013-0891-7&partnerID=40&md5=3ede81df5732aa0fe8c62f6d959a220d
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/70500
|
| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
|
|
There are no files associated with this item.
|
|
作者单位: | Wadia Institute of Himalayan Geology, 33-GMS Road, Dehradun, 248001, India
|
| Recommended Citation: | |
Thakur V.C.. Active tectonics of Himalayan Frontal Fault system[J]. International Journal of Earth Sciences,2013-01-01,102(7)
|
|
|