Weak and vanishing upper mantle discontinuities generated by large-scale lithospheric delamination in the Longmenshan area, China

Abstract A large amount of high-quality teleseismic data is used for common conversion point (CCP) stacking of receiver functions in the Longmenshan area and near-by region. The results show that a large-scale high-velocity anomaly (LHVA) or lithospheric delamination can modify the structure of uppe...

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Autor principal:	Chuansong He
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5c2148847b1f47369d44b86b9d0da632
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spelling	oai:doaj.org-article:5c2148847b1f47369d44b86b9d0da6322021-11-08T10:49:21ZWeak and vanishing upper mantle discontinuities generated by large-scale lithospheric delamination in the Longmenshan area, China10.1038/s41598-021-01061-42045-2322https://doaj.org/article/5c2148847b1f47369d44b86b9d0da6322021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01061-4https://doaj.org/toc/2045-2322Abstract A large amount of high-quality teleseismic data is used for common conversion point (CCP) stacking of receiver functions in the Longmenshan area and near-by region. The results show that a large-scale high-velocity anomaly (LHVA) or lithospheric delamination can modify the structure of upper mantle discontinuities or weaken the phase boundary of olivine, which is a very important finding and can be used to assess stagnant slabs in the mantle transition zone globally. The deepening region of the 660 km discontinuity beneath the Songpan-Ganzi terrane identified in this study might be generated by the LHVA.Chuansong HeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Chuansong He Weak and vanishing upper mantle discontinuities generated by large-scale lithospheric delamination in the Longmenshan area, China
description	Abstract A large amount of high-quality teleseismic data is used for common conversion point (CCP) stacking of receiver functions in the Longmenshan area and near-by region. The results show that a large-scale high-velocity anomaly (LHVA) or lithospheric delamination can modify the structure of upper mantle discontinuities or weaken the phase boundary of olivine, which is a very important finding and can be used to assess stagnant slabs in the mantle transition zone globally. The deepening region of the 660 km discontinuity beneath the Songpan-Ganzi terrane identified in this study might be generated by the LHVA.
format	article
author	Chuansong He
author_facet	Chuansong He
author_sort	Chuansong He
title	Weak and vanishing upper mantle discontinuities generated by large-scale lithospheric delamination in the Longmenshan area, China
title_short	Weak and vanishing upper mantle discontinuities generated by large-scale lithospheric delamination in the Longmenshan area, China
title_full	Weak and vanishing upper mantle discontinuities generated by large-scale lithospheric delamination in the Longmenshan area, China
title_fullStr	Weak and vanishing upper mantle discontinuities generated by large-scale lithospheric delamination in the Longmenshan area, China
title_full_unstemmed	Weak and vanishing upper mantle discontinuities generated by large-scale lithospheric delamination in the Longmenshan area, China
title_sort	weak and vanishing upper mantle discontinuities generated by large-scale lithospheric delamination in the longmenshan area, china
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/5c2148847b1f47369d44b86b9d0da632
work_keys_str_mv	AT chuansonghe weakandvanishinguppermantlediscontinuitiesgeneratedbylargescalelithosphericdelaminationinthelongmenshanareachina
_version_	1718442619412938752

Weak and vanishing upper mantle discontinuities generated by large-scale lithospheric delamination in the Longmenshan area, China

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