Plume-Induced Subduction Initiation: Revisiting Models and Observations

Subduction initiation induced by a hot and buoyant mantle plume head is unique among proposed subduction initiation mechanisms because it does not require pre-existing weak zones or other forces for lithospheric collapse. Since recognition of the first evidence of subduction nucleation induced by a...

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Autores principales:	Marzieh Baes, Robert J. Stern, Scott Whattam, Taras V. Gerya, Stephan V. Sobolev
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	plume head lithospheric weakening plume-induced subduction initiation modeling studies geological observations Science Q
Acceso en línea:	https://doaj.org/article/40c55bc3084a4159a656501abb0e8cca
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spelling	oai:doaj.org-article:40c55bc3084a4159a656501abb0e8cca2021-11-15T04:57:03ZPlume-Induced Subduction Initiation: Revisiting Models and Observations2296-646310.3389/feart.2021.766604https://doaj.org/article/40c55bc3084a4159a656501abb0e8cca2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/feart.2021.766604/fullhttps://doaj.org/toc/2296-6463Subduction initiation induced by a hot and buoyant mantle plume head is unique among proposed subduction initiation mechanisms because it does not require pre-existing weak zones or other forces for lithospheric collapse. Since recognition of the first evidence of subduction nucleation induced by a mantle plume in the Late Cretaceous Caribbean realm, the number of studies focusing on other natural examples has grown. Here, we review numerical and physical modeling and geological-geochemical studies which have been carried out thus far to investigate onset of a new subduction zone caused by impingement of a mantle plume head. As geological-geochemical data suggests that plume-lithosphere interactions have long been important - spanning from the Archean to the present - modeling studies provide valuable information on the spatial and temporal variations in lithospheric deformation induced by these interactions. Numerical and physical modeling studies, ranging from regional to global scales, illustrate the key role of plume buoyancy, lithospheric strength and magmatic weakening above the plume head on plume-lithosphere interactions. Lithospheric/crustal heterogeneities, pre-existing lithospheric weak zones and external compressional/extensional forces may also change the deformation regime caused by plume-lithosphere interaction.Marzieh BaesMarzieh BaesRobert J. SternScott WhattamTaras V. GeryaStephan V. SobolevStephan V. SobolevFrontiers Media S.A.articleplume headlithospheric weakeningplume-induced subduction initiationmodeling studiesgeological observationsScienceQENFrontiers in Earth Science, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	plume head lithospheric weakening plume-induced subduction initiation modeling studies geological observations Science Q
spellingShingle	plume head lithospheric weakening plume-induced subduction initiation modeling studies geological observations Science Q Marzieh Baes Marzieh Baes Robert J. Stern Scott Whattam Taras V. Gerya Stephan V. Sobolev Stephan V. Sobolev Plume-Induced Subduction Initiation: Revisiting Models and Observations
description	Subduction initiation induced by a hot and buoyant mantle plume head is unique among proposed subduction initiation mechanisms because it does not require pre-existing weak zones or other forces for lithospheric collapse. Since recognition of the first evidence of subduction nucleation induced by a mantle plume in the Late Cretaceous Caribbean realm, the number of studies focusing on other natural examples has grown. Here, we review numerical and physical modeling and geological-geochemical studies which have been carried out thus far to investigate onset of a new subduction zone caused by impingement of a mantle plume head. As geological-geochemical data suggests that plume-lithosphere interactions have long been important - spanning from the Archean to the present - modeling studies provide valuable information on the spatial and temporal variations in lithospheric deformation induced by these interactions. Numerical and physical modeling studies, ranging from regional to global scales, illustrate the key role of plume buoyancy, lithospheric strength and magmatic weakening above the plume head on plume-lithosphere interactions. Lithospheric/crustal heterogeneities, pre-existing lithospheric weak zones and external compressional/extensional forces may also change the deformation regime caused by plume-lithosphere interaction.
format	article
author	Marzieh Baes Marzieh Baes Robert J. Stern Scott Whattam Taras V. Gerya Stephan V. Sobolev Stephan V. Sobolev
author_facet	Marzieh Baes Marzieh Baes Robert J. Stern Scott Whattam Taras V. Gerya Stephan V. Sobolev Stephan V. Sobolev
author_sort	Marzieh Baes
title	Plume-Induced Subduction Initiation: Revisiting Models and Observations
title_short	Plume-Induced Subduction Initiation: Revisiting Models and Observations
title_full	Plume-Induced Subduction Initiation: Revisiting Models and Observations
title_fullStr	Plume-Induced Subduction Initiation: Revisiting Models and Observations
title_full_unstemmed	Plume-Induced Subduction Initiation: Revisiting Models and Observations
title_sort	plume-induced subduction initiation: revisiting models and observations
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/40c55bc3084a4159a656501abb0e8cca
work_keys_str_mv	AT marziehbaes plumeinducedsubductioninitiationrevisitingmodelsandobservations AT marziehbaes plumeinducedsubductioninitiationrevisitingmodelsandobservations AT robertjstern plumeinducedsubductioninitiationrevisitingmodelsandobservations AT scottwhattam plumeinducedsubductioninitiationrevisitingmodelsandobservations AT tarasvgerya plumeinducedsubductioninitiationrevisitingmodelsandobservations AT stephanvsobolev plumeinducedsubductioninitiationrevisitingmodelsandobservations AT stephanvsobolev plumeinducedsubductioninitiationrevisitingmodelsandobservations
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Plume-Induced Subduction Initiation: Revisiting Models and Observations

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