Methane seepage at Vestnesa Ridge (NW Svalbard) since the Last Glacial Maximum
Accepted manuscript version. Published version available at https://doi.org/10.1016/j.quascirev.2018.06.006 . Licensed CC BY-NC-ND 4.0. Multiple proxies in the geological record offshore NW Svalbard track shallow subseafloor diagenesis and seafloor methane seepage during the Last Glacial Maximum (LG...
Published in: | Quaternary Science Reviews |
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Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier
2018
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Online Access: | https://hdl.handle.net/10037/13900 https://doi.org/10.1016/j.quascirev.2018.06.006 |
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ftunivtroemsoe:oai:munin.uit.no:10037/13900 |
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openpolar |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 Micropaleontology Foraminifers Stable isotopes Methane seepage Authigenic carbonate Holocene Pleistocene Paleogeography Deglaciation Arctic Ocean |
spellingShingle |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 Micropaleontology Foraminifers Stable isotopes Methane seepage Authigenic carbonate Holocene Pleistocene Paleogeography Deglaciation Arctic Ocean Schneider, Andrea Panieri, Giuliana Lepland, Aivo Consolaro, Chiara Crémière, Antoine Forwick, Matthias Johnson, J.E. Plaza-Faverola, Andreia Sauer, Simone Knies, Jochen Methane seepage at Vestnesa Ridge (NW Svalbard) since the Last Glacial Maximum |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 Micropaleontology Foraminifers Stable isotopes Methane seepage Authigenic carbonate Holocene Pleistocene Paleogeography Deglaciation Arctic Ocean |
description |
Accepted manuscript version. Published version available at https://doi.org/10.1016/j.quascirev.2018.06.006 . Licensed CC BY-NC-ND 4.0. Multiple proxies in the geological record offshore NW Svalbard track shallow subseafloor diagenesis and seafloor methane seepage during the Last Glacial Maximum (LGM) extent and the disintegration of the Svalbard Barents Sea Ice Sheet (SBIS). Vestnesa Ridge, located at 79°N and in 1200 m water depth, is one of the northernmost known active methane seep sites and is characterised by a subseafloor fluid flow system, numerous seafloor pockmarks and gas flares in the water column. In this study, we develop a Late Pleistocene and Holocene stratigraphic framework, use stable oxygen and carbon isotope signatures (δ 18 O, δ 13 C) of benthic and planktic foraminifera, the mineralogical and carbon isotope composition of methane-derived authigenic carbonate (MDAC) and sediment geochemical data of ten sediment cores to assess methane seepage variability on Vestnesa Ridge. The studied cores cover the age range between 31.9 and 10 cal ka BP and record 32 negative δ 13 C excursions in benthic and planktic foraminifera with amplitudes down to −29 ‰ VPDB. These δ 13 C excursions are often associated with elevated Ca/Ti and Sr/Ti elemental ratios in sediments and MDAC nodules. The precipitation of MDAC overgrowth on foraminiferal tests explains most of the negative δ 13 C excursions. In this dataset, the oldest recorded methane emission episodes on Vestnesa Ridge occurred between the LGM (24–23.5 cal ka BP) and Heinrich Event 1 (HE 1; 17.7–16.8 cal ka BP). Geological indicators for past subseafloor methane cycling and seafloor methane seepage, such as negative foraminiferal δ 13 C excursions, MDAC nodules, and elevated Sr/Ti elemental ratios recorded in post-LGM sediments, possibly represent vertical migration of the sulphate-methane transition zone (SMTZ) and post-date sedimentation by up to 13.4 ka. However, it is important to note that indications of post-LGM seafloor methane seepage at Vestnesa Ridge also correspond to the established methane efflux chronology for the adjacent Barents Sea shelf, implying that glacio-isostatic adjustments and associated re-activation of pre-existing deep-seated faults after disintegration of the SBIS are likely important controlling factors on fluid migration towards the seafloor. |
format |
Article in Journal/Newspaper |
author |
Schneider, Andrea Panieri, Giuliana Lepland, Aivo Consolaro, Chiara Crémière, Antoine Forwick, Matthias Johnson, J.E. Plaza-Faverola, Andreia Sauer, Simone Knies, Jochen |
author_facet |
Schneider, Andrea Panieri, Giuliana Lepland, Aivo Consolaro, Chiara Crémière, Antoine Forwick, Matthias Johnson, J.E. Plaza-Faverola, Andreia Sauer, Simone Knies, Jochen |
author_sort |
Schneider, Andrea |
title |
Methane seepage at Vestnesa Ridge (NW Svalbard) since the Last Glacial Maximum |
title_short |
Methane seepage at Vestnesa Ridge (NW Svalbard) since the Last Glacial Maximum |
title_full |
Methane seepage at Vestnesa Ridge (NW Svalbard) since the Last Glacial Maximum |
title_fullStr |
Methane seepage at Vestnesa Ridge (NW Svalbard) since the Last Glacial Maximum |
title_full_unstemmed |
Methane seepage at Vestnesa Ridge (NW Svalbard) since the Last Glacial Maximum |
title_sort |
methane seepage at vestnesa ridge (nw svalbard) since the last glacial maximum |
publisher |
Elsevier |
publishDate |
2018 |
url |
https://hdl.handle.net/10037/13900 https://doi.org/10.1016/j.quascirev.2018.06.006 |
geographic |
Arctic Arctic Ocean Barents Sea Svalbard |
geographic_facet |
Arctic Arctic Ocean Barents Sea Svalbard |
genre |
Arctic Arctic Arctic Ocean Barents Sea Foraminifera* Ice Sheet Sea ice Svalbard Svalbard-Barents Sea Ice sheet |
genre_facet |
Arctic Arctic Arctic Ocean Barents Sea Foraminifera* Ice Sheet Sea ice Svalbard Svalbard-Barents Sea Ice sheet |
op_relation |
Quaternary Science Reviews info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ info:eu-repo/grantAgreement/RCN/PETROMAKS2/255150/Norway/Norwegian margin fluid systems and methane- derived carbonate crusts - Recent scientific advances in service of petroleum exploration// Schneider, A., Panieri, G., Lepland, A., Consolaro, C., Crémière, A., Forwick, M., . Knies, J. (2018). Methane seepage at Vestnesa Ridge (NW Svalbard) since the Last Glacial Maximum. Quaternary Science Reviews, 193, 98-117. https://doi.org/10.1016/j.quascirev.2018.06.006 FRIDAID 1593167 doi:10.1016/j.quascirev.2018.06.006 0277-3791 1873-457X https://hdl.handle.net/10037/13900 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2018.06.006 |
container_title |
Quaternary Science Reviews |
container_volume |
193 |
container_start_page |
98 |
op_container_end_page |
117 |
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1766301651588612096 |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/13900 2023-05-15T14:27:45+02:00 Methane seepage at Vestnesa Ridge (NW Svalbard) since the Last Glacial Maximum Schneider, Andrea Panieri, Giuliana Lepland, Aivo Consolaro, Chiara Crémière, Antoine Forwick, Matthias Johnson, J.E. Plaza-Faverola, Andreia Sauer, Simone Knies, Jochen 2018-06-21 https://hdl.handle.net/10037/13900 https://doi.org/10.1016/j.quascirev.2018.06.006 eng eng Elsevier Quaternary Science Reviews info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ info:eu-repo/grantAgreement/RCN/PETROMAKS2/255150/Norway/Norwegian margin fluid systems and methane- derived carbonate crusts - Recent scientific advances in service of petroleum exploration// Schneider, A., Panieri, G., Lepland, A., Consolaro, C., Crémière, A., Forwick, M., . Knies, J. (2018). Methane seepage at Vestnesa Ridge (NW Svalbard) since the Last Glacial Maximum. Quaternary Science Reviews, 193, 98-117. https://doi.org/10.1016/j.quascirev.2018.06.006 FRIDAID 1593167 doi:10.1016/j.quascirev.2018.06.006 0277-3791 1873-457X https://hdl.handle.net/10037/13900 openAccess VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 Micropaleontology Foraminifers Stable isotopes Methane seepage Authigenic carbonate Holocene Pleistocene Paleogeography Deglaciation Arctic Ocean Journal article Tidsskriftartikkel Peer reviewed 2018 ftunivtroemsoe https://doi.org/10.1016/j.quascirev.2018.06.006 2021-06-25T17:56:09Z Accepted manuscript version. Published version available at https://doi.org/10.1016/j.quascirev.2018.06.006 . Licensed CC BY-NC-ND 4.0. Multiple proxies in the geological record offshore NW Svalbard track shallow subseafloor diagenesis and seafloor methane seepage during the Last Glacial Maximum (LGM) extent and the disintegration of the Svalbard Barents Sea Ice Sheet (SBIS). Vestnesa Ridge, located at 79°N and in 1200 m water depth, is one of the northernmost known active methane seep sites and is characterised by a subseafloor fluid flow system, numerous seafloor pockmarks and gas flares in the water column. In this study, we develop a Late Pleistocene and Holocene stratigraphic framework, use stable oxygen and carbon isotope signatures (δ 18 O, δ 13 C) of benthic and planktic foraminifera, the mineralogical and carbon isotope composition of methane-derived authigenic carbonate (MDAC) and sediment geochemical data of ten sediment cores to assess methane seepage variability on Vestnesa Ridge. The studied cores cover the age range between 31.9 and 10 cal ka BP and record 32 negative δ 13 C excursions in benthic and planktic foraminifera with amplitudes down to −29 ‰ VPDB. These δ 13 C excursions are often associated with elevated Ca/Ti and Sr/Ti elemental ratios in sediments and MDAC nodules. The precipitation of MDAC overgrowth on foraminiferal tests explains most of the negative δ 13 C excursions. In this dataset, the oldest recorded methane emission episodes on Vestnesa Ridge occurred between the LGM (24–23.5 cal ka BP) and Heinrich Event 1 (HE 1; 17.7–16.8 cal ka BP). Geological indicators for past subseafloor methane cycling and seafloor methane seepage, such as negative foraminiferal δ 13 C excursions, MDAC nodules, and elevated Sr/Ti elemental ratios recorded in post-LGM sediments, possibly represent vertical migration of the sulphate-methane transition zone (SMTZ) and post-date sedimentation by up to 13.4 ka. However, it is important to note that indications of post-LGM seafloor methane seepage at Vestnesa Ridge also correspond to the established methane efflux chronology for the adjacent Barents Sea shelf, implying that glacio-isostatic adjustments and associated re-activation of pre-existing deep-seated faults after disintegration of the SBIS are likely important controlling factors on fluid migration towards the seafloor. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Barents Sea Foraminifera* Ice Sheet Sea ice Svalbard Svalbard-Barents Sea Ice sheet University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean Barents Sea Svalbard Quaternary Science Reviews 193 98 117 |