DOI: 10.1016/j.epsl.2017.11.048
Scopus记录号: 2-s2.0-85037330557
论文题名: Insight into the subducted Indian slab and origin of the Tengchong volcano in SE Tibet from receiver function analysis
作者: Xu M. ; Huang H. ; Huang Z. ; Wang P. ; Wang L. ; Xu M. ; Mi N. ; Li H. ; Yu D. ; Yuan X.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 482 起始页码: 567
结束页码: 579
语种: 英语
英文关键词: ChinArray
; mantle discontinuity
; receiver function
; subduction
; Tibet
Scopus关键词: Plates (structural components)
; Seismic waves
; Wave propagation
; ChinArray
; Mantle discontinuities
; Receiver functions
; subduction
; Tibet
; Volcanoes
; discontinuity
; Indian plate
; slab
; subduction
; transition zone
; upper mantle
; volcanism
; volcano
; China
; Qinghai-Xizang Plateau
; Tengchong
; Xizang
; Yunnan
英文摘要: The subduction of the Indian Plate beneath SE Tibet and its related volcanism in Tengchong are important geologic processes that accompany the evolution of the Tibetan Plateau. However, it is still not clear whether the subduction and volcanism are confined to the upper mantle or if they extend deep into the mantle transition zone (MTZ). Here, we imaged MTZ structures by using receiver function methods with the waveforms recorded by more than 300 temporary stations in SE Tibet. The results show significant depressions of both the 410-km and 660-km discontinuities and a thickened MTZ (260–280 km) beneath SE Tibet. The depression of the 660-km discontinuity (by 10–30 km) and the thickened MTZ correlate well with high P-wave velocity anomalies in the MTZ, indicating the presence of a subducted Indian slab within the MTZ. Significant depression of the 410-km discontinuity (by 10–20 km) beneath the Tengchong volcano indicates that the volcano originates from the MTZ and is closely related to the subducted Indian slab. Our results confirm the deep subduction of the Indian plate and the deep origin of the Tengchong volcano. However, it remains unknown whether a slab gap exists and contributes to the Tengchong volcano. © 2017 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110103
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210046, China; Institute of Geophysics and Geodynamics, Nanjing University, Nanjing, 210046, China; GeoForschungsZentrum Potsdam, Telegrafenberg, Potsdam, 14473, Germany; Center of Modern Earth Sciences, Nanjing University, Nanjing, 210046, China
Recommended Citation:
Xu M.,Huang H.,Huang Z.,et al. Insight into the subducted Indian slab and origin of the Tengchong volcano in SE Tibet from receiver function analysis[J]. Earth and Planetary Science Letters,2018-01-01,482