Reutilisation of hydrothermal vent complexes for focused fluid flow on continental margins (Modgunn Arch, Norwegian Sea)
Conventional three‐dimensional (3D) seismic data reveal abundant igneous activity on the Modgunn Arch, mid‐Norwegian margin. Magmatic sills and associated hydrothermal vent complexes located at various depths prove the repeated utilisation of Paleocene‐Eocene magmatic conduits. In total, 125 sills a...
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:135272 2023-05-15T17:47:05+02:00 Reutilisation of hydrothermal vent complexes for focused fluid flow on continental margins (Modgunn Arch, Norwegian Sea) Roelofse, Chantelle Alves, Tiago M. Omosanya, Kamal'deen O. 2021-04-30 application/pdf https://orca.cardiff.ac.uk/id/eprint/135272/ https://doi.org/10.1111/bre.12507 https://orca.cardiff.ac.uk/id/eprint/135272/7/bre.12507.pdf en eng Wiley https://orca.cardiff.ac.uk/id/eprint/135272/7/bre.12507.pdf Roelofse, Chantelle https://orca.cardiff.ac.uk/view/cardiffauthors/A2245863A.html, Alves, Tiago M. https://orca.cardiff.ac.uk/view/cardiffauthors/A106896T.html orcid:0000-0002-2765-3760 orcid:0000-0002-2765-3760 and Omosanya, Kamal'deen O. 2021. Reutilisation of hydrothermal vent complexes for focused fluid flow on continental margins (Modgunn Arch, Norwegian Sea). Basin Research 33 (2) , pp. 1111-1134. 10.1111/bre.12507 https://doi.org/10.1111/bre.12507 file https://orca.cardiff.ac.uk/135272/7/bre.12507.pdf doi:10.1111/bre.12507 cc_by CC-BY Article PeerReviewed 2021 ftunivcardiff https://doi.org/10.1111/bre.12507 2022-11-10T23:38:01Z Conventional three‐dimensional (3D) seismic data reveal abundant igneous activity on the Modgunn Arch, mid‐Norwegian margin. Magmatic sills and associated hydrothermal vent complexes located at various depths prove the repeated utilisation of Paleocene‐Eocene magmatic conduits. In total, 125 sills and 85 hydrothermal vent complexes were identified and mapped, with vent complexes ranging in diameter from 300 to 3,100 m and sills from 0.5 to 50 km. Three examples of stacked vent complexes are presented, revealing large eruptions of hydrothermal fluids vertically through the same conduit, from sills to the palaeo‐sea floor. The vent complexes are found throughout Paleocene strata (66–56 Ma), whilst at least ten (10) vents were active during the Eocene. This study emphasises the importance of characterising ancient magmatic structures, as hydrothermal conduits and vent structures were, and may still be, reutilised as preferential fluid flow pathways to shallower strata. A minimum of four phases of hydrothermal vent complex formation are inferred. Cretaceous faults are both bypassed and used for magma and fluid flow. The reutilisation of magmatic structures here described may bring to light previously overlooked plays and renew interest in exploring magma‐rich continental margins. Article in Journal/Newspaper Norwegian Sea Cardiff University: ORCA (Online Research @ Cardiff) Norwegian Sea Basin Research 33 2 1111 1134 |
institution |
Open Polar |
collection |
Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
English |
description |
Conventional three‐dimensional (3D) seismic data reveal abundant igneous activity on the Modgunn Arch, mid‐Norwegian margin. Magmatic sills and associated hydrothermal vent complexes located at various depths prove the repeated utilisation of Paleocene‐Eocene magmatic conduits. In total, 125 sills and 85 hydrothermal vent complexes were identified and mapped, with vent complexes ranging in diameter from 300 to 3,100 m and sills from 0.5 to 50 km. Three examples of stacked vent complexes are presented, revealing large eruptions of hydrothermal fluids vertically through the same conduit, from sills to the palaeo‐sea floor. The vent complexes are found throughout Paleocene strata (66–56 Ma), whilst at least ten (10) vents were active during the Eocene. This study emphasises the importance of characterising ancient magmatic structures, as hydrothermal conduits and vent structures were, and may still be, reutilised as preferential fluid flow pathways to shallower strata. A minimum of four phases of hydrothermal vent complex formation are inferred. Cretaceous faults are both bypassed and used for magma and fluid flow. The reutilisation of magmatic structures here described may bring to light previously overlooked plays and renew interest in exploring magma‐rich continental margins. |
format |
Article in Journal/Newspaper |
author |
Roelofse, Chantelle Alves, Tiago M. Omosanya, Kamal'deen O. |
spellingShingle |
Roelofse, Chantelle Alves, Tiago M. Omosanya, Kamal'deen O. Reutilisation of hydrothermal vent complexes for focused fluid flow on continental margins (Modgunn Arch, Norwegian Sea) |
author_facet |
Roelofse, Chantelle Alves, Tiago M. Omosanya, Kamal'deen O. |
author_sort |
Roelofse, Chantelle |
title |
Reutilisation of hydrothermal vent complexes for focused fluid flow on continental margins (Modgunn Arch, Norwegian Sea) |
title_short |
Reutilisation of hydrothermal vent complexes for focused fluid flow on continental margins (Modgunn Arch, Norwegian Sea) |
title_full |
Reutilisation of hydrothermal vent complexes for focused fluid flow on continental margins (Modgunn Arch, Norwegian Sea) |
title_fullStr |
Reutilisation of hydrothermal vent complexes for focused fluid flow on continental margins (Modgunn Arch, Norwegian Sea) |
title_full_unstemmed |
Reutilisation of hydrothermal vent complexes for focused fluid flow on continental margins (Modgunn Arch, Norwegian Sea) |
title_sort |
reutilisation of hydrothermal vent complexes for focused fluid flow on continental margins (modgunn arch, norwegian sea) |
publisher |
Wiley |
publishDate |
2021 |
url |
https://orca.cardiff.ac.uk/id/eprint/135272/ https://doi.org/10.1111/bre.12507 https://orca.cardiff.ac.uk/id/eprint/135272/7/bre.12507.pdf |
geographic |
Norwegian Sea |
geographic_facet |
Norwegian Sea |
genre |
Norwegian Sea |
genre_facet |
Norwegian Sea |
op_relation |
https://orca.cardiff.ac.uk/id/eprint/135272/7/bre.12507.pdf Roelofse, Chantelle https://orca.cardiff.ac.uk/view/cardiffauthors/A2245863A.html, Alves, Tiago M. https://orca.cardiff.ac.uk/view/cardiffauthors/A106896T.html orcid:0000-0002-2765-3760 orcid:0000-0002-2765-3760 and Omosanya, Kamal'deen O. 2021. Reutilisation of hydrothermal vent complexes for focused fluid flow on continental margins (Modgunn Arch, Norwegian Sea). Basin Research 33 (2) , pp. 1111-1134. 10.1111/bre.12507 https://doi.org/10.1111/bre.12507 file https://orca.cardiff.ac.uk/135272/7/bre.12507.pdf doi:10.1111/bre.12507 |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1111/bre.12507 |
container_title |
Basin Research |
container_volume |
33 |
container_issue |
2 |
container_start_page |
1111 |
op_container_end_page |
1134 |
_version_ |
1766151398453411840 |