Moytirra: discovery of the first known deep-sea hydrothermal vent field on the slow-spreading mid-atlantic ridge north of the azores
Geological, biological, morphological, and hydrochemical data are presented for the newly discovered Moytirra vent field at 45 degrees N. This is the only high temperature hydrothermal vent known between the Azores and Iceland, in the North Atlantic and is located on a slow to ultraslowspreading mid...
Published in: | Geochemistry, Geophysics, Geosystems |
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Wiley-Blackwell
2013
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Online Access: | http://hdl.handle.net/10379/14412 https://doi.org/10.1002/ggge.20243 |
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ftnuigalway:oai:aran.library.nuigalway.ie/:10379/14412 2023-06-11T04:13:06+02:00 Moytirra: discovery of the first known deep-sea hydrothermal vent field on the slow-spreading mid-atlantic ridge north of the azores Wheeler, A. J. Murton, B. Copley, J. Lim, A. Carlsson, J. Collins, P. Dorschel, B. Green, D. Judge, M. Nye, V. Benzie, J. Antoniacomi, A. Coughlan, M. Morris, K. 2013-10-01 http://hdl.handle.net/10379/14412 https://doi.org/10.1002/ggge.20243 unknown Wiley-Blackwell Geochemistry, Geophysics, Geosystems Wheeler, A. J. Murton, B.; Copley, J.; Lim, A.; Carlsson, J.; Collins, P.; Dorschel, B.; Green, D.; Judge, M.; Nye, V.; Benzie, J.; Antoniacomi, A.; Coughlan, M.; Morris, K. (2013). Moytirra: discovery of the first known deep-sea hydrothermal vent field on the slow-spreading mid-atlantic ridge north of the azores. Geochemistry, Geophysics, Geosystems 14 (10), 4170-4184 1525-2027 http://hdl.handle.net/10379/14412 doi:10.1002/ggge.20243 Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ mid-atlantic ridge hydrothermal vent massive sulfides vent biota median valley fault floor massive sulfides east pacific rise ne atlantic rimicaris-exoculata reykjanes ridge communities fauna biodiversity ocean invertebrates Article 2013 ftnuigalway https://doi.org/10.1002/ggge.20243 2023-05-28T18:06:05Z Geological, biological, morphological, and hydrochemical data are presented for the newly discovered Moytirra vent field at 45 degrees N. This is the only high temperature hydrothermal vent known between the Azores and Iceland, in the North Atlantic and is located on a slow to ultraslowspreading mid-ocean ridge uniquely situated on the 300 m high fault scarp of the eastern axial wall, 3.5 km from the axial volcanic ridge crest. Furthermore, the Moytirra vent field is, unusually for tectonically controlled hydrothermal vents systems, basalt hosted and perched midway up on the median valley wall and presumably heated by an off-axis magma chamber. The Moytirra vent field consists of an alignment of four sites of venting, three actively emitting "black smoke," producing a complex of chimneys and beehive diffusers. The largest chimney is 18 m tall and vigorously venting. The vent fauna described here are the only ones documented for the North Atlantic (Azores to Reykjanes Ridge) and significantly expands our knowledge of North Atlantic biodiversity. The surfaces of the vent chimneys are occupied by aggregations of gastropods (Peltospira sp.) and populations of alvinocaridid shrimp (Mirocaris sp. with Rimicaris sp. also present). Other fauna present include bythograeid crabs (Segonzacia sp.) and zoarcid fish (Pachycara sp.), but bathymodiolin mussels and actinostolid anemones were not observed in the vent field. The discovery of the Moytirra vent field therefore expands the known latitudinal distributions of several ventendemic genera in the north Atlantic, and reveals faunal affinities with vents south of the Azores rather than north of Iceland. Article in Journal/Newspaper Iceland North Atlantic National University of Ireland (NUI), Galway: ARAN Pacific Mid-Atlantic Ridge Reykjanes ENVELOPE(-22.250,-22.250,65.467,65.467) Geochemistry, Geophysics, Geosystems 14 10 4170 4184 |
institution |
Open Polar |
collection |
National University of Ireland (NUI), Galway: ARAN |
op_collection_id |
ftnuigalway |
language |
unknown |
topic |
mid-atlantic ridge hydrothermal vent massive sulfides vent biota median valley fault floor massive sulfides east pacific rise ne atlantic rimicaris-exoculata reykjanes ridge communities fauna biodiversity ocean invertebrates |
spellingShingle |
mid-atlantic ridge hydrothermal vent massive sulfides vent biota median valley fault floor massive sulfides east pacific rise ne atlantic rimicaris-exoculata reykjanes ridge communities fauna biodiversity ocean invertebrates Wheeler, A. J. Murton, B. Copley, J. Lim, A. Carlsson, J. Collins, P. Dorschel, B. Green, D. Judge, M. Nye, V. Benzie, J. Antoniacomi, A. Coughlan, M. Morris, K. Moytirra: discovery of the first known deep-sea hydrothermal vent field on the slow-spreading mid-atlantic ridge north of the azores |
topic_facet |
mid-atlantic ridge hydrothermal vent massive sulfides vent biota median valley fault floor massive sulfides east pacific rise ne atlantic rimicaris-exoculata reykjanes ridge communities fauna biodiversity ocean invertebrates |
description |
Geological, biological, morphological, and hydrochemical data are presented for the newly discovered Moytirra vent field at 45 degrees N. This is the only high temperature hydrothermal vent known between the Azores and Iceland, in the North Atlantic and is located on a slow to ultraslowspreading mid-ocean ridge uniquely situated on the 300 m high fault scarp of the eastern axial wall, 3.5 km from the axial volcanic ridge crest. Furthermore, the Moytirra vent field is, unusually for tectonically controlled hydrothermal vents systems, basalt hosted and perched midway up on the median valley wall and presumably heated by an off-axis magma chamber. The Moytirra vent field consists of an alignment of four sites of venting, three actively emitting "black smoke," producing a complex of chimneys and beehive diffusers. The largest chimney is 18 m tall and vigorously venting. The vent fauna described here are the only ones documented for the North Atlantic (Azores to Reykjanes Ridge) and significantly expands our knowledge of North Atlantic biodiversity. The surfaces of the vent chimneys are occupied by aggregations of gastropods (Peltospira sp.) and populations of alvinocaridid shrimp (Mirocaris sp. with Rimicaris sp. also present). Other fauna present include bythograeid crabs (Segonzacia sp.) and zoarcid fish (Pachycara sp.), but bathymodiolin mussels and actinostolid anemones were not observed in the vent field. The discovery of the Moytirra vent field therefore expands the known latitudinal distributions of several ventendemic genera in the north Atlantic, and reveals faunal affinities with vents south of the Azores rather than north of Iceland. |
format |
Article in Journal/Newspaper |
author |
Wheeler, A. J. Murton, B. Copley, J. Lim, A. Carlsson, J. Collins, P. Dorschel, B. Green, D. Judge, M. Nye, V. Benzie, J. Antoniacomi, A. Coughlan, M. Morris, K. |
author_facet |
Wheeler, A. J. Murton, B. Copley, J. Lim, A. Carlsson, J. Collins, P. Dorschel, B. Green, D. Judge, M. Nye, V. Benzie, J. Antoniacomi, A. Coughlan, M. Morris, K. |
author_sort |
Wheeler, A. J. |
title |
Moytirra: discovery of the first known deep-sea hydrothermal vent field on the slow-spreading mid-atlantic ridge north of the azores |
title_short |
Moytirra: discovery of the first known deep-sea hydrothermal vent field on the slow-spreading mid-atlantic ridge north of the azores |
title_full |
Moytirra: discovery of the first known deep-sea hydrothermal vent field on the slow-spreading mid-atlantic ridge north of the azores |
title_fullStr |
Moytirra: discovery of the first known deep-sea hydrothermal vent field on the slow-spreading mid-atlantic ridge north of the azores |
title_full_unstemmed |
Moytirra: discovery of the first known deep-sea hydrothermal vent field on the slow-spreading mid-atlantic ridge north of the azores |
title_sort |
moytirra: discovery of the first known deep-sea hydrothermal vent field on the slow-spreading mid-atlantic ridge north of the azores |
publisher |
Wiley-Blackwell |
publishDate |
2013 |
url |
http://hdl.handle.net/10379/14412 https://doi.org/10.1002/ggge.20243 |
long_lat |
ENVELOPE(-22.250,-22.250,65.467,65.467) |
geographic |
Pacific Mid-Atlantic Ridge Reykjanes |
geographic_facet |
Pacific Mid-Atlantic Ridge Reykjanes |
genre |
Iceland North Atlantic |
genre_facet |
Iceland North Atlantic |
op_relation |
Geochemistry, Geophysics, Geosystems Wheeler, A. J. Murton, B.; Copley, J.; Lim, A.; Carlsson, J.; Collins, P.; Dorschel, B.; Green, D.; Judge, M.; Nye, V.; Benzie, J.; Antoniacomi, A.; Coughlan, M.; Morris, K. (2013). Moytirra: discovery of the first known deep-sea hydrothermal vent field on the slow-spreading mid-atlantic ridge north of the azores. Geochemistry, Geophysics, Geosystems 14 (10), 4170-4184 1525-2027 http://hdl.handle.net/10379/14412 doi:10.1002/ggge.20243 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ |
op_doi |
https://doi.org/10.1002/ggge.20243 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
14 |
container_issue |
10 |
container_start_page |
4170 |
op_container_end_page |
4184 |
_version_ |
1768389740288016384 |