气候变化领域集成服务门户(CCPortal): Constraining the exhumation history of the Greater Himalayan Sequence, Kali Gandaki, Central Nepal

CCPortal

DOI	10.1144/jgs2023-100
	Constraining the exhumation history of the Greater Himalayan Sequence, Kali Gandaki, Central Nepal
	Pye, Alexandra E.; Hodges, Kip V.; Ehlers, Todd A.; van Soest, Matthijs C.; Mcdonald, Christopher S.; Bhandari, Basant
发表日期	2024
ISSN	0016-7649
EISSN	2041-479X
起始页码	181
结束页码	2
卷号	181 期号:2
英文摘要	To understand the evolution of the Himalayan orogen, we first need to understand how the South Tibetan Detachment System (STDS) evolved through time and space. We present new (and previously published) thermochronological results from a transect in the footwall and ductile shear zone of the basal structure of the STDS in the Kali Gandaki region: the Annapurna detachment. The exhumation history is interpreted from observations using 1D thermal-kinematic models that invert to give the exhumation rate of samples. Recently published data have suggested that high-temperature slip on the detachment persisted until at least c. 12 Ma, more recently than is commonly assumed for STDS deformation. Our new data and modelling support these findings and suggest that the cessation of slip coincided with a dramatic (>50%) decrease in the exhumation rate of the shear zone and its footwall at c. 12-10 Ma. Exhumation rates remained low until c. 3 Ma, after which they increased to levels comparable with those that characterized STDS activity. Plausible causes of this late pulse of exhumation include an intensification of the Asian winter monsoon and the establishment of today's Indian summer monsoon, glaciation and/or an internal structural reorganization of the Himalayan orogenic wedge driving localized rock uplift in the hinterland.
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001157576000001
来源期刊	JOURNAL OF THE GEOLOGICAL SOCIETY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/296280
作者单位	Arizona State University; Arizona State University-Tempe; University of Glasgow; Tribhuvan University
推荐引用方式 GB/T 7714	Pye, Alexandra E.,Hodges, Kip V.,Ehlers, Todd A.,et al. Constraining the exhumation history of the Greater Himalayan Sequence, Kali Gandaki, Central Nepal[J],2024,181(2).
APA	Pye, Alexandra E.,Hodges, Kip V.,Ehlers, Todd A.,van Soest, Matthijs C.,Mcdonald, Christopher S.,&Bhandari, Basant.(2024).Constraining the exhumation history of the Greater Himalayan Sequence, Kali Gandaki, Central Nepal.JOURNAL OF THE GEOLOGICAL SOCIETY,181(2).
MLA	Pye, Alexandra E.,et al."Constraining the exhumation history of the Greater Himalayan Sequence, Kali Gandaki, Central Nepal".JOURNAL OF THE GEOLOGICAL SOCIETY 181.2(2024).