Mantle plume and rift-related volcanism during the evolution of the Rio Grande Rise
The Rio Grande Rise in the western South Atlantic Ocean has been interpreted as either an oceanic plateau related to the Tristan-Gough mantle plume, or a fragment of detached continental crust. Here we present new major and trace element data for volcanic rocks from the western and eastern Rio Grand...
Published in: | Communications Earth & Environment |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Nature Research
2022
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Online Access: | https://oceanrep.geomar.de/id/eprint/55215/ https://oceanrep.geomar.de/id/eprint/55215/1/s43247-022-00349-1.pdf https://oceanrep.geomar.de/id/eprint/55215/2/43247_2022_349_MOESM1_ESM.pdf https://oceanrep.geomar.de/id/eprint/55215/3/43247_2022_349_MOESM2_ESM.pdf https://oceanrep.geomar.de/id/eprint/55215/4/43247_2022_349_MOESM3_ESM.xlsx https://doi.org/10.1038/s43247-022-00349-1 |
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ftoceanrep:oai:oceanrep.geomar.de:55215 2024-02-11T10:08:37+01:00 Mantle plume and rift-related volcanism during the evolution of the Rio Grande Rise Hoyer, Patrick A. Haase, Karsten M. Regelous, Marcel O’Connor, John M. Homrighausen, Stephan Geissler, Wolfram H. Jokat, Wilfried 2022-02-07 text https://oceanrep.geomar.de/id/eprint/55215/ https://oceanrep.geomar.de/id/eprint/55215/1/s43247-022-00349-1.pdf https://oceanrep.geomar.de/id/eprint/55215/2/43247_2022_349_MOESM1_ESM.pdf https://oceanrep.geomar.de/id/eprint/55215/3/43247_2022_349_MOESM2_ESM.pdf https://oceanrep.geomar.de/id/eprint/55215/4/43247_2022_349_MOESM3_ESM.xlsx https://doi.org/10.1038/s43247-022-00349-1 en eng Nature Research https://oceanrep.geomar.de/id/eprint/55215/1/s43247-022-00349-1.pdf https://oceanrep.geomar.de/id/eprint/55215/2/43247_2022_349_MOESM1_ESM.pdf https://oceanrep.geomar.de/id/eprint/55215/3/43247_2022_349_MOESM2_ESM.pdf https://oceanrep.geomar.de/id/eprint/55215/4/43247_2022_349_MOESM3_ESM.xlsx Hoyer, P. A., Haase, K. M., Regelous, M., O’Connor, J. M., Homrighausen, S., Geissler, W. H. and Jokat, W. (2022) Mantle plume and rift-related volcanism during the evolution of the Rio Grande Rise. Open Access Communications Earth & Environment, 3 . Art.Nr. 18 (2022). DOI 10.1038/s43247-022-00349-1 <https://doi.org/10.1038/s43247-022-00349-1>. doi:10.1038/s43247-022-00349-1 cc_by_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed info:eu-repo/semantics/article 2022 ftoceanrep https://doi.org/10.1038/s43247-022-00349-1 2024-01-15T00:25:07Z The Rio Grande Rise in the western South Atlantic Ocean has been interpreted as either an oceanic plateau related to the Tristan-Gough mantle plume, or a fragment of detached continental crust. Here we present new major and trace element data for volcanic rocks from the western and eastern Rio Grande Rise and the adjacent Jean Charcot Seamount Chain. The eastern Rio Grande Rise and older parts of the western Rio Grande Rise are comprised of tholeiitic basalt with moderately enriched trace element compositions and likely formed above the Tristan-Gough mantle plume close to the southern Mid-Atlantic Ridge. Younger alkalic lavas from the western Rio Grande Rise and the Jean Charcot Seamount Chain were formed by lower degrees of melting beneath thicker lithosphere in an intraplate setting possibly during rifting of the plateau. There is no clear geochemical evidence that remnants of continental crust are present beneath the Rio Grande Rise. Article in Journal/Newspaper South Atlantic Ocean OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Charcot ENVELOPE(139.017,139.017,-69.367,-69.367) Gough ENVELOPE(159.367,159.367,-81.633,-81.633) Mid-Atlantic Ridge Tristan ENVELOPE(140.900,140.900,-66.735,-66.735) Communications Earth & Environment 3 1 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
The Rio Grande Rise in the western South Atlantic Ocean has been interpreted as either an oceanic plateau related to the Tristan-Gough mantle plume, or a fragment of detached continental crust. Here we present new major and trace element data for volcanic rocks from the western and eastern Rio Grande Rise and the adjacent Jean Charcot Seamount Chain. The eastern Rio Grande Rise and older parts of the western Rio Grande Rise are comprised of tholeiitic basalt with moderately enriched trace element compositions and likely formed above the Tristan-Gough mantle plume close to the southern Mid-Atlantic Ridge. Younger alkalic lavas from the western Rio Grande Rise and the Jean Charcot Seamount Chain were formed by lower degrees of melting beneath thicker lithosphere in an intraplate setting possibly during rifting of the plateau. There is no clear geochemical evidence that remnants of continental crust are present beneath the Rio Grande Rise. |
format |
Article in Journal/Newspaper |
author |
Hoyer, Patrick A. Haase, Karsten M. Regelous, Marcel O’Connor, John M. Homrighausen, Stephan Geissler, Wolfram H. Jokat, Wilfried |
spellingShingle |
Hoyer, Patrick A. Haase, Karsten M. Regelous, Marcel O’Connor, John M. Homrighausen, Stephan Geissler, Wolfram H. Jokat, Wilfried Mantle plume and rift-related volcanism during the evolution of the Rio Grande Rise |
author_facet |
Hoyer, Patrick A. Haase, Karsten M. Regelous, Marcel O’Connor, John M. Homrighausen, Stephan Geissler, Wolfram H. Jokat, Wilfried |
author_sort |
Hoyer, Patrick A. |
title |
Mantle plume and rift-related volcanism during the evolution of the Rio Grande Rise |
title_short |
Mantle plume and rift-related volcanism during the evolution of the Rio Grande Rise |
title_full |
Mantle plume and rift-related volcanism during the evolution of the Rio Grande Rise |
title_fullStr |
Mantle plume and rift-related volcanism during the evolution of the Rio Grande Rise |
title_full_unstemmed |
Mantle plume and rift-related volcanism during the evolution of the Rio Grande Rise |
title_sort |
mantle plume and rift-related volcanism during the evolution of the rio grande rise |
publisher |
Nature Research |
publishDate |
2022 |
url |
https://oceanrep.geomar.de/id/eprint/55215/ https://oceanrep.geomar.de/id/eprint/55215/1/s43247-022-00349-1.pdf https://oceanrep.geomar.de/id/eprint/55215/2/43247_2022_349_MOESM1_ESM.pdf https://oceanrep.geomar.de/id/eprint/55215/3/43247_2022_349_MOESM2_ESM.pdf https://oceanrep.geomar.de/id/eprint/55215/4/43247_2022_349_MOESM3_ESM.xlsx https://doi.org/10.1038/s43247-022-00349-1 |
long_lat |
ENVELOPE(139.017,139.017,-69.367,-69.367) ENVELOPE(159.367,159.367,-81.633,-81.633) ENVELOPE(140.900,140.900,-66.735,-66.735) |
geographic |
Charcot Gough Mid-Atlantic Ridge Tristan |
geographic_facet |
Charcot Gough Mid-Atlantic Ridge Tristan |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_relation |
https://oceanrep.geomar.de/id/eprint/55215/1/s43247-022-00349-1.pdf https://oceanrep.geomar.de/id/eprint/55215/2/43247_2022_349_MOESM1_ESM.pdf https://oceanrep.geomar.de/id/eprint/55215/3/43247_2022_349_MOESM2_ESM.pdf https://oceanrep.geomar.de/id/eprint/55215/4/43247_2022_349_MOESM3_ESM.xlsx Hoyer, P. A., Haase, K. M., Regelous, M., O’Connor, J. M., Homrighausen, S., Geissler, W. H. and Jokat, W. (2022) Mantle plume and rift-related volcanism during the evolution of the Rio Grande Rise. Open Access Communications Earth & Environment, 3 . Art.Nr. 18 (2022). DOI 10.1038/s43247-022-00349-1 <https://doi.org/10.1038/s43247-022-00349-1>. doi:10.1038/s43247-022-00349-1 |
op_rights |
cc_by_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s43247-022-00349-1 |
container_title |
Communications Earth & Environment |
container_volume |
3 |
container_issue |
1 |
_version_ |
1790608040297234432 |