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Subduction history of the Caribbean from upper-mantle seismic imaging and plate reconstruction

The margins of the Caribbean and associated hazards and resources have been shaped by a poorly understood history of subduction. Using new data, we improve teleseismic P-wave imaging of the eastern Caribbean upper mantle and compare identified subducted-plate fragments with trench locations predicte...

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Autores principales: Braszus, Benedikt, Goes, Saskia, Allen, Rob, Rietbrock, Andreas, Collier, Jenny, Harmon, Nick, Henstock, Tim, Hicks, Stephen, Rychert, Catherine A., Maunder, Ben, van Hunen, Jeroen, Bie, Lidong, Blundy, Jon, Cooper, George, Davy, Richard, Kendall, J. Michael, Macpherson, Colin, Wilkinson, Jamie, Wilson, Marjorie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8270990/
https://www.ncbi.nlm.nih.gov/pubmed/34244511
http://dx.doi.org/10.1038/s41467-021-24413-0
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author Braszus, Benedikt
Goes, Saskia
Allen, Rob
Rietbrock, Andreas
Collier, Jenny
Harmon, Nick
Henstock, Tim
Hicks, Stephen
Rychert, Catherine A.
Maunder, Ben
van Hunen, Jeroen
Bie, Lidong
Blundy, Jon
Cooper, George
Davy, Richard
Kendall, J. Michael
Macpherson, Colin
Wilkinson, Jamie
Wilson, Marjorie
author_facet Braszus, Benedikt
Goes, Saskia
Allen, Rob
Rietbrock, Andreas
Collier, Jenny
Harmon, Nick
Henstock, Tim
Hicks, Stephen
Rychert, Catherine A.
Maunder, Ben
van Hunen, Jeroen
Bie, Lidong
Blundy, Jon
Cooper, George
Davy, Richard
Kendall, J. Michael
Macpherson, Colin
Wilkinson, Jamie
Wilson, Marjorie
author_sort Braszus, Benedikt
collection PubMed
description The margins of the Caribbean and associated hazards and resources have been shaped by a poorly understood history of subduction. Using new data, we improve teleseismic P-wave imaging of the eastern Caribbean upper mantle and compare identified subducted-plate fragments with trench locations predicted from plate reconstruction. This shows that material at 700–1200 km depth below South America derives from 90–115 Myr old westward subduction, initiated prior to Caribbean Large-Igneous-Province volcanism. At shallower depths, an accumulation of subducted material is attributed to Great Arc of the Caribbean subduction as it evolved over the past 70 Ma. We interpret gaps in these subducted-plate anomalies as: a plate window and tear along the subducted Proto-Caribbean ridge; tearing along subducted fracture zones, and subduction of a volatile-rich boundary between Proto-Caribbean and Atlantic domains. Phases of back-arc spreading and arc jumps correlate with changes in age, and hence buoyancy, of the subducting plate.
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spelling pubmed-82709902021-07-23 Subduction history of the Caribbean from upper-mantle seismic imaging and plate reconstruction Braszus, Benedikt Goes, Saskia Allen, Rob Rietbrock, Andreas Collier, Jenny Harmon, Nick Henstock, Tim Hicks, Stephen Rychert, Catherine A. Maunder, Ben van Hunen, Jeroen Bie, Lidong Blundy, Jon Cooper, George Davy, Richard Kendall, J. Michael Macpherson, Colin Wilkinson, Jamie Wilson, Marjorie Nat Commun Article The margins of the Caribbean and associated hazards and resources have been shaped by a poorly understood history of subduction. Using new data, we improve teleseismic P-wave imaging of the eastern Caribbean upper mantle and compare identified subducted-plate fragments with trench locations predicted from plate reconstruction. This shows that material at 700–1200 km depth below South America derives from 90–115 Myr old westward subduction, initiated prior to Caribbean Large-Igneous-Province volcanism. At shallower depths, an accumulation of subducted material is attributed to Great Arc of the Caribbean subduction as it evolved over the past 70 Ma. We interpret gaps in these subducted-plate anomalies as: a plate window and tear along the subducted Proto-Caribbean ridge; tearing along subducted fracture zones, and subduction of a volatile-rich boundary between Proto-Caribbean and Atlantic domains. Phases of back-arc spreading and arc jumps correlate with changes in age, and hence buoyancy, of the subducting plate. Nature Publishing Group UK 2021-07-09 /pmc/articles/PMC8270990/ /pubmed/34244511 http://dx.doi.org/10.1038/s41467-021-24413-0 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/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/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Braszus, Benedikt
Goes, Saskia
Allen, Rob
Rietbrock, Andreas
Collier, Jenny
Harmon, Nick
Henstock, Tim
Hicks, Stephen
Rychert, Catherine A.
Maunder, Ben
van Hunen, Jeroen
Bie, Lidong
Blundy, Jon
Cooper, George
Davy, Richard
Kendall, J. Michael
Macpherson, Colin
Wilkinson, Jamie
Wilson, Marjorie
Subduction history of the Caribbean from upper-mantle seismic imaging and plate reconstruction
title Subduction history of the Caribbean from upper-mantle seismic imaging and plate reconstruction
title_full Subduction history of the Caribbean from upper-mantle seismic imaging and plate reconstruction
title_fullStr Subduction history of the Caribbean from upper-mantle seismic imaging and plate reconstruction
title_full_unstemmed Subduction history of the Caribbean from upper-mantle seismic imaging and plate reconstruction
title_short Subduction history of the Caribbean from upper-mantle seismic imaging and plate reconstruction
title_sort subduction history of the caribbean from upper-mantle seismic imaging and plate reconstruction
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8270990/
https://www.ncbi.nlm.nih.gov/pubmed/34244511
http://dx.doi.org/10.1038/s41467-021-24413-0
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