Volcanically hosted venting with indications of ultramafic influence at Aurora hydrothermal field on Gakkel Ridge
The Aurora hydrothermal field (Arctic Ocean) is hosted in volcanic rocks but also shows evidence of mantle rock influence in the shallow sub-surface. Our discovery is pertinent to disciplines from marine mining to the search for life beyond Earth. The Aurora hydrothermal system, Arctic Ocean, hosts...
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ftpubman:oai:pure.mpg.de:item_3487761 2023-08-27T04:07:43+02:00 Volcanically hosted venting with indications of ultramafic influence at Aurora hydrothermal field on Gakkel Ridge German, C. Reeves, E. Turke, A. Diehl, A. Albers, E. Bach, W. Purser, A. Ramalho, S. Suman, S. Mertens, C. Walter, M. Ramirez-Llodra, E. Schlindwein, V. Bunz, S. Boetius, A. 2022-10-31 application/pdf http://hdl.handle.net/21.11116/0000-000C-76D0-4 http://hdl.handle.net/21.11116/0000-000C-76D2-2 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-022-34014-0 http://hdl.handle.net/21.11116/0000-000C-76D0-4 http://hdl.handle.net/21.11116/0000-000C-76D2-2 info:eu-repo/semantics/openAccess NATURE COMMUNICATIONS info:eu-repo/semantics/article 2022 ftpubman https://doi.org/10.1038/s41467-022-34014-0 2023-08-02T01:38:08Z The Aurora hydrothermal field (Arctic Ocean) is hosted in volcanic rocks but also shows evidence of mantle rock influence in the shallow sub-surface. Our discovery is pertinent to disciplines from marine mining to the search for life beyond Earth. The Aurora hydrothermal system, Arctic Ocean, hosts active submarine venting within an extensive field of relict mineral deposits. Here we show the site is associated with a neovolcanic mound located within the Gakkel Ridge rift-valley floor, but deep-tow camera and sidescan surveys reveal the site to be >= 100 m across-unusually large for a volcanically hosted vent on a slow-spreading ridge and more comparable to tectonically hosted systems that require large time-integrated heat-fluxes to form. The hydrothermal plume emanating from Aurora exhibits much higher dissolved CH4/Mn values than typical basalt-hosted hydrothermal systems and, instead, closely resembles those of high-temperature ultramafic-influenced vents at slow-spreading ridges. We hypothesize that deep-penetrating fluid circulation may have sustained the prolonged venting evident at the Aurora hydrothermal field with a hydrothermal convection cell that can access ultramafic lithologies underlying anomalously thin ocean crust at this ultraslow spreading ridge setting. Our findings have implications for ultra-slow ridge cooling, global marine mineral distributions, and the diversity of geologic settings that can host abiotic organic synthesis - pertinent to the search for life beyond Earth. Article in Journal/Newspaper Arctic Arctic Ocean Max Planck Society: MPG.PuRe Arctic Arctic Ocean Gakkel Ridge ENVELOPE(90.000,90.000,87.000,87.000) Nature Communications 13 1 |
institution |
Open Polar |
collection |
Max Planck Society: MPG.PuRe |
op_collection_id |
ftpubman |
language |
English |
description |
The Aurora hydrothermal field (Arctic Ocean) is hosted in volcanic rocks but also shows evidence of mantle rock influence in the shallow sub-surface. Our discovery is pertinent to disciplines from marine mining to the search for life beyond Earth. The Aurora hydrothermal system, Arctic Ocean, hosts active submarine venting within an extensive field of relict mineral deposits. Here we show the site is associated with a neovolcanic mound located within the Gakkel Ridge rift-valley floor, but deep-tow camera and sidescan surveys reveal the site to be >= 100 m across-unusually large for a volcanically hosted vent on a slow-spreading ridge and more comparable to tectonically hosted systems that require large time-integrated heat-fluxes to form. The hydrothermal plume emanating from Aurora exhibits much higher dissolved CH4/Mn values than typical basalt-hosted hydrothermal systems and, instead, closely resembles those of high-temperature ultramafic-influenced vents at slow-spreading ridges. We hypothesize that deep-penetrating fluid circulation may have sustained the prolonged venting evident at the Aurora hydrothermal field with a hydrothermal convection cell that can access ultramafic lithologies underlying anomalously thin ocean crust at this ultraslow spreading ridge setting. Our findings have implications for ultra-slow ridge cooling, global marine mineral distributions, and the diversity of geologic settings that can host abiotic organic synthesis - pertinent to the search for life beyond Earth. |
format |
Article in Journal/Newspaper |
author |
German, C. Reeves, E. Turke, A. Diehl, A. Albers, E. Bach, W. Purser, A. Ramalho, S. Suman, S. Mertens, C. Walter, M. Ramirez-Llodra, E. Schlindwein, V. Bunz, S. Boetius, A. |
spellingShingle |
German, C. Reeves, E. Turke, A. Diehl, A. Albers, E. Bach, W. Purser, A. Ramalho, S. Suman, S. Mertens, C. Walter, M. Ramirez-Llodra, E. Schlindwein, V. Bunz, S. Boetius, A. Volcanically hosted venting with indications of ultramafic influence at Aurora hydrothermal field on Gakkel Ridge |
author_facet |
German, C. Reeves, E. Turke, A. Diehl, A. Albers, E. Bach, W. Purser, A. Ramalho, S. Suman, S. Mertens, C. Walter, M. Ramirez-Llodra, E. Schlindwein, V. Bunz, S. Boetius, A. |
author_sort |
German, C. |
title |
Volcanically hosted venting with indications of ultramafic influence at Aurora hydrothermal field on Gakkel Ridge |
title_short |
Volcanically hosted venting with indications of ultramafic influence at Aurora hydrothermal field on Gakkel Ridge |
title_full |
Volcanically hosted venting with indications of ultramafic influence at Aurora hydrothermal field on Gakkel Ridge |
title_fullStr |
Volcanically hosted venting with indications of ultramafic influence at Aurora hydrothermal field on Gakkel Ridge |
title_full_unstemmed |
Volcanically hosted venting with indications of ultramafic influence at Aurora hydrothermal field on Gakkel Ridge |
title_sort |
volcanically hosted venting with indications of ultramafic influence at aurora hydrothermal field on gakkel ridge |
publishDate |
2022 |
url |
http://hdl.handle.net/21.11116/0000-000C-76D0-4 http://hdl.handle.net/21.11116/0000-000C-76D2-2 |
long_lat |
ENVELOPE(90.000,90.000,87.000,87.000) |
geographic |
Arctic Arctic Ocean Gakkel Ridge |
geographic_facet |
Arctic Arctic Ocean Gakkel Ridge |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_source |
NATURE COMMUNICATIONS |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-022-34014-0 http://hdl.handle.net/21.11116/0000-000C-76D0-4 http://hdl.handle.net/21.11116/0000-000C-76D2-2 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41467-022-34014-0 |
container_title |
Nature Communications |
container_volume |
13 |
container_issue |
1 |
_version_ |
1775348439102521344 |