The Håkon Mosby mud volcano: 330 000 years of focused fluid flow activity at the SW Barents Sea slope
Studying the morphology and subsurface geometry of mud volcanoes provides insights into their activity. This paper describes the internal structure of the Håkon Mosby mud volcano (HMMV) in the southwestern Barents Sea and presents a conceptual model of its evolution. The lack of a mud edifice and th...
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ftoceanrep:oai:oceanrep.geomar.de:4702 2024-09-30T14:32:53+00:00 The Håkon Mosby mud volcano: 330 000 years of focused fluid flow activity at the SW Barents Sea slope Perez-Garcia, C. Feseker, Tomas Mienert, Jürgen Berndt, Christian 2009 text https://oceanrep.geomar.de/id/eprint/4702/ https://oceanrep.geomar.de/id/eprint/4702/1/895_Perez-Garcia_2009_RecentEvolutionAndDynamicsOf_Artzeit_pubid12740.pdf https://doi.org/10.1016/j.margeo.2009.03.022 en eng Elsevier https://oceanrep.geomar.de/id/eprint/4702/1/895_Perez-Garcia_2009_RecentEvolutionAndDynamicsOf_Artzeit_pubid12740.pdf Perez-Garcia, C., Feseker, T., Mienert, J. and Berndt, C. (2009) The Håkon Mosby mud volcano: 330 000 years of focused fluid flow activity at the SW Barents Sea slope. Marine Geology, 262 (1/4). pp. 105-115. DOI 10.1016/j.margeo.2009.03.022 <https://doi.org/10.1016/j.margeo.2009.03.022>. doi:10.1016/j.margeo.2009.03.022 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2009 ftoceanrep https://doi.org/10.1016/j.margeo.2009.03.022 2024-09-04T05:04:40Z Studying the morphology and subsurface geometry of mud volcanoes provides insights into their activity. This paper describes the internal structure of the Håkon Mosby mud volcano (HMMV) in the southwestern Barents Sea and presents a conceptual model of its evolution. The lack of a mud edifice and the profuse gas flares suggest that in the recent past the mud volcano evolution was predominantly controlled by venting of gas-rich fluids and free gas. However, the analysis of high-resolution single-channel seismic (SCS) data reveals for the first time the existence of a pseudo-mud chamber at the top of the 3 km deep central conduit. It was once created at the seabed and is now a buried expression that acts as mud chamber. The pseudo-mud chamber is situated approximately 300 m below the seafloor, directly above the 330 ka Bear Island Slide (BIS) scar reflection and below glacigenic debris flow deposits that constitute the sediment on top. The sediment profiler data indicates a younger mud deposit above the debris flows, which points to a reactivation of the mud volcano. The reactivation was most likely triggered by the contrast in density between the gas-rich mud chamber and the high-density debris flow deposits. Three stages, i.e. initiation, sealing and reactivation, and a second active period define the evolution of this young mud volcano. Both, the morphology and size of the conduit as well as in-situ temperature gradients point towards a focused and rapid fluid flow. Article in Journal/Newspaper Barents Sea Bear Island OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Barents Sea Bear Island ENVELOPE(-67.250,-67.250,-68.151,-68.151) Marine Geology 262 1-4 105 115 |
institution |
Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Studying the morphology and subsurface geometry of mud volcanoes provides insights into their activity. This paper describes the internal structure of the Håkon Mosby mud volcano (HMMV) in the southwestern Barents Sea and presents a conceptual model of its evolution. The lack of a mud edifice and the profuse gas flares suggest that in the recent past the mud volcano evolution was predominantly controlled by venting of gas-rich fluids and free gas. However, the analysis of high-resolution single-channel seismic (SCS) data reveals for the first time the existence of a pseudo-mud chamber at the top of the 3 km deep central conduit. It was once created at the seabed and is now a buried expression that acts as mud chamber. The pseudo-mud chamber is situated approximately 300 m below the seafloor, directly above the 330 ka Bear Island Slide (BIS) scar reflection and below glacigenic debris flow deposits that constitute the sediment on top. The sediment profiler data indicates a younger mud deposit above the debris flows, which points to a reactivation of the mud volcano. The reactivation was most likely triggered by the contrast in density between the gas-rich mud chamber and the high-density debris flow deposits. Three stages, i.e. initiation, sealing and reactivation, and a second active period define the evolution of this young mud volcano. Both, the morphology and size of the conduit as well as in-situ temperature gradients point towards a focused and rapid fluid flow. |
format |
Article in Journal/Newspaper |
author |
Perez-Garcia, C. Feseker, Tomas Mienert, Jürgen Berndt, Christian |
spellingShingle |
Perez-Garcia, C. Feseker, Tomas Mienert, Jürgen Berndt, Christian The Håkon Mosby mud volcano: 330 000 years of focused fluid flow activity at the SW Barents Sea slope |
author_facet |
Perez-Garcia, C. Feseker, Tomas Mienert, Jürgen Berndt, Christian |
author_sort |
Perez-Garcia, C. |
title |
The Håkon Mosby mud volcano: 330 000 years of focused fluid flow activity at the SW Barents Sea slope |
title_short |
The Håkon Mosby mud volcano: 330 000 years of focused fluid flow activity at the SW Barents Sea slope |
title_full |
The Håkon Mosby mud volcano: 330 000 years of focused fluid flow activity at the SW Barents Sea slope |
title_fullStr |
The Håkon Mosby mud volcano: 330 000 years of focused fluid flow activity at the SW Barents Sea slope |
title_full_unstemmed |
The Håkon Mosby mud volcano: 330 000 years of focused fluid flow activity at the SW Barents Sea slope |
title_sort |
håkon mosby mud volcano: 330 000 years of focused fluid flow activity at the sw barents sea slope |
publisher |
Elsevier |
publishDate |
2009 |
url |
https://oceanrep.geomar.de/id/eprint/4702/ https://oceanrep.geomar.de/id/eprint/4702/1/895_Perez-Garcia_2009_RecentEvolutionAndDynamicsOf_Artzeit_pubid12740.pdf https://doi.org/10.1016/j.margeo.2009.03.022 |
long_lat |
ENVELOPE(-67.250,-67.250,-68.151,-68.151) |
geographic |
Barents Sea Bear Island |
geographic_facet |
Barents Sea Bear Island |
genre |
Barents Sea Bear Island |
genre_facet |
Barents Sea Bear Island |
op_relation |
https://oceanrep.geomar.de/id/eprint/4702/1/895_Perez-Garcia_2009_RecentEvolutionAndDynamicsOf_Artzeit_pubid12740.pdf Perez-Garcia, C., Feseker, T., Mienert, J. and Berndt, C. (2009) The Håkon Mosby mud volcano: 330 000 years of focused fluid flow activity at the SW Barents Sea slope. Marine Geology, 262 (1/4). pp. 105-115. DOI 10.1016/j.margeo.2009.03.022 <https://doi.org/10.1016/j.margeo.2009.03.022>. doi:10.1016/j.margeo.2009.03.022 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.margeo.2009.03.022 |
container_title |
Marine Geology |
container_volume |
262 |
container_issue |
1-4 |
container_start_page |
105 |
op_container_end_page |
115 |
_version_ |
1811636945527242752 |