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LIP formation and protracted lower mantle upwelling induced by rifting and delamination

Large Igneous Provinces (LIPs) are commonly attributed to mantle plumes, hot upwellings from the deep lower mantle, apparently unrelated to plate motions. However, LIPs often form in association with rifting and breakup. Using numerical modelling, we introduce a novel idea that explains plume-like m...

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Autores principales: Petersen, Kenni Dinesen, Schiffer, Christian, Nagel, Thorsten
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6224380/
https://www.ncbi.nlm.nih.gov/pubmed/30410091
http://dx.doi.org/10.1038/s41598-018-34194-0
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author Petersen, Kenni Dinesen
Schiffer, Christian
Nagel, Thorsten
author_facet Petersen, Kenni Dinesen
Schiffer, Christian
Nagel, Thorsten
author_sort Petersen, Kenni Dinesen
collection PubMed
description Large Igneous Provinces (LIPs) are commonly attributed to mantle plumes, hot upwellings from the deep lower mantle, apparently unrelated to plate motions. However, LIPs often form in association with rifting and breakup. Using numerical modelling, we introduce a novel idea that explains plume-like mantle upwelling by plate tectonic processes. Our model indicates that rifting-induced delamination of orogenic lithosphere can perturb the thermochemical mantle stratification and induce lower mantle upwelling which causes syn-rift LIP formation followed by protracted and enhanced mid ocean ridge basalt (MORB) generation. Our model provides an explanation for the geographical correlation between the Caledonian suture, the North Atlantic Igneous Province (NAIP) and present-day Icelandic magmatism.
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spelling pubmed-62243802018-11-13 LIP formation and protracted lower mantle upwelling induced by rifting and delamination Petersen, Kenni Dinesen Schiffer, Christian Nagel, Thorsten Sci Rep Article Large Igneous Provinces (LIPs) are commonly attributed to mantle plumes, hot upwellings from the deep lower mantle, apparently unrelated to plate motions. However, LIPs often form in association with rifting and breakup. Using numerical modelling, we introduce a novel idea that explains plume-like mantle upwelling by plate tectonic processes. Our model indicates that rifting-induced delamination of orogenic lithosphere can perturb the thermochemical mantle stratification and induce lower mantle upwelling which causes syn-rift LIP formation followed by protracted and enhanced mid ocean ridge basalt (MORB) generation. Our model provides an explanation for the geographical correlation between the Caledonian suture, the North Atlantic Igneous Province (NAIP) and present-day Icelandic magmatism. Nature Publishing Group UK 2018-11-08 /pmc/articles/PMC6224380/ /pubmed/30410091 http://dx.doi.org/10.1038/s41598-018-34194-0 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Petersen, Kenni Dinesen
Schiffer, Christian
Nagel, Thorsten
LIP formation and protracted lower mantle upwelling induced by rifting and delamination
title LIP formation and protracted lower mantle upwelling induced by rifting and delamination
title_full LIP formation and protracted lower mantle upwelling induced by rifting and delamination
title_fullStr LIP formation and protracted lower mantle upwelling induced by rifting and delamination
title_full_unstemmed LIP formation and protracted lower mantle upwelling induced by rifting and delamination
title_short LIP formation and protracted lower mantle upwelling induced by rifting and delamination
title_sort lip formation and protracted lower mantle upwelling induced by rifting and delamination
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6224380/
https://www.ncbi.nlm.nih.gov/pubmed/30410091
http://dx.doi.org/10.1038/s41598-018-34194-0
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