globalchange  > 科学计划与规划
DOI: 10.1002/2015GL063767
论文题名:
Evidence for a wide and gently dipping Main Himalayan Thrust in western Bhutan
作者: Le Roux-Mallouf R.; Godard V.; Cattin R.; Ferry M.; Gyeltshen J.; Ritz J.-F.; Drupka D.; Guillou V.; Arnold M.; Aumaître G.; Bourlès D.L.; Keddadouche K.
刊名: Geophysical Research Letters
ISSN: 0094-9126
EISSN: 1944-8857
出版年: 2015
卷: 42, 期:9
起始页码: 3257
结束页码: 3265
语种: 英语
英文关键词: Bhutan ; cosmonuclide ; denudation ; Himalaya ; lateral variation ; Main Himalayan Thrust
Scopus关键词: Global positioning system ; Bhutan ; Cosmonuclide ; Denudation ; Himalayas ; Lateral variations ; Main himalayan thrusts ; Earthquakes ; decollement ; denudation ; dip ; earthquake magnitude ; structural geology ; uplift ; Bhutan ; Himalayas
英文摘要: The Main Himalayan Thrust (MHT) is the source of great earthquakes that have been documented along the range. Its geometry is a key parameter that influences accommodation of tectonic loading and earthquake magnitudes along the Himalayan Arc. Although seismic images are available for both the western and the central part of the range, this geometry remains poorly constrained for the Bhutanese Himalayas. Here we address this issue using a 10Be cosmogenic nuclides denudation transect across western Bhutan. We observe a wide low denudation rate domain between 50km and 110km from the front followed by a strong northward increase. Using a joint inversion of denudation rates, GPS data, and Holocene uplift rates, we interpret this pattern as a consequence of a flat-ramp transition along the MHT. Compared to central Nepal and Sikkim, this location of the ramp suggests a wider décollement, with implications for greater seismogenic potential of the MHT in western Bhutan. Key Points Assessment of denudation rates in Himalayas Robust constrain on the location of the flat-ramp transition of the MHT Evidence of a strong lateral variation in the MHT geometry ©2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930481246&doi=10.1002%2f2015GL063767&partnerID=40&md5=da8db10161f9cf27d66560662112aa00
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被引频次[WOS]:34   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8742
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Géosciences Montpellier, CNRS, Université de Montpellier, Montpellier, France

Recommended Citation:
Le Roux-Mallouf R.,Godard V.,Cattin R.,et al. Evidence for a wide and gently dipping Main Himalayan Thrust in western Bhutan[J]. Geophysical Research Letters,2015-01-01,42(9).
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