Early to middle Cenozoic paleoenvironment and erosion estimates of the southwestern Barents Sea: Insights from a regional mass-balance approach
Accepted manuscript version, licensed CC BY-NC-ND 4.0 . Published version available at https://doi.org/10.1016/j.marpetgeo.2018.05.039 . The Cenozoic pre-glacial development of the southwestern Barents Sea is discussed, with focus on the early to middle Cenozoic net erosion that was poorly constrain...
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Online Access: | https://hdl.handle.net/10037/14428 https://doi.org/10.1016/j.marpetgeo.2018.05.039 |
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ftunivtroemsoe:oai:munin.uit.no:10037/14428 2023-05-15T14:27:18+02:00 Early to middle Cenozoic paleoenvironment and erosion estimates of the southwestern Barents Sea: Insights from a regional mass-balance approach Lasabuda, Amando Putra Ersaid Laberg, Jan Sverre Knutsen, Stig-Morten Høgseth, Gert 2018-06-02 https://hdl.handle.net/10037/14428 https://doi.org/10.1016/j.marpetgeo.2018.05.039 eng eng Elsevier Marine and Petroleum Geology info:eu-repo/grantAgreement/RCN/PETROSENTR/228107/Norway/Research Centre for Arctic Petroleum Exploration/ARCEx/ Lasabuda, A. L., Laberg, J. S., Knutsen, S. & Høgseth, G. (2018). Early to middle Cenozoic paleoenvironment and erosion estimates of the southwestern Barents Sea: Insights from a regional mass-balance approach. Marine and Petroleum Geology 96, 501-521. https://doi.org/10.1016/j.marpetgeo.2018.05.039 FRIDAID 1590272 doi:10.1016/j.marpetgeo.2018.05.039 0264-8172 1873-4073 https://hdl.handle.net/10037/14428 openAccess VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Sedimentologi: 456 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Sedimentology: 456 Seismisk interpretasjon / Seismic interpretation Tektonikk / Tectonics Journal article Tidsskriftartikkel Preprint Manuskript 2018 ftunivtroemsoe https://doi.org/10.1016/j.marpetgeo.2018.05.039 2021-06-25T17:56:19Z Accepted manuscript version, licensed CC BY-NC-ND 4.0 . Published version available at https://doi.org/10.1016/j.marpetgeo.2018.05.039 . The Cenozoic pre-glacial development of the southwestern Barents Sea is discussed, with focus on the early to middle Cenozoic net erosion that was poorly constrained. From 2D and 3D seismic mapping, the western Barents Sea continental margin development shows a complex history of structural configuration of highs and basins related to the Greenland and Eurasian plate movement and subsequent seafloor spreading in the Norwegian-Greenland Sea. Our subdivision of the Sørvestsnaget Basin allows for a closer focus on the tectonostratigraphic development in an overall transtensional setting. To the west, the lower to middle Cenozoic sediments are observed to be systematically overlying the oceanic crust in the Lofoten Basin in accordance to the progressive seafloor's opening. Based on interpretation of five seismic units including sediment progradation (clinoforms) as well as lithology information from exploration wells, the paleoenvironments for the Paleocene, Eocene, Oligocene, and Neogene periods were reconstructed. The mass-balance approach has then been used to quantify the corresponding erosion of the southwestern Barents Sea source area. The Stappen High, the Loppa High, and part of mainland Northern Norway are proposed as the key drainage areas covering a combined area of 191,500 to 334,000 km 2 , depending on the location of its eastern limit. Our result shows that an average net erosion of 858–1362 m and an average erosion rate of 0.014–0.021 m/k.y have characterized the Cenozoic pre-glacial period. The calculated sediment discharge is 8.7 × 10 6 t/y and the sediment yield is 26.2–45.7 t/km 2 /y. Comparison with present-day fluvial systems shows a similar rate of sediment discharge suggesting that our estimates are reasonable. The pre-glacial sedimentation rate is estimated to be 0.026–0.071 m/k.y, which is on average one order of magnitude lower than for the preceding glacial period characterizing this area. Article in Journal/Newspaper Arctic Barents Sea Greenland Greenland Sea Lofoten Loppa Northern Norway University of Tromsø: Munin Open Research Archive Barents Sea Greenland Lofoten Lofoten Basin ENVELOPE(4.000,4.000,70.000,70.000) Loppa ENVELOPE(22.351,22.351,70.240,70.240) Norway Sørvestsnaget ENVELOPE(17.500,17.500,73.667,73.667) Marine and Petroleum Geology 96 501 521 |
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::Sedimentologi: 456 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Sedimentology: 456 Seismisk interpretasjon / Seismic interpretation Tektonikk / Tectonics |
spellingShingle |
VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Sedimentologi: 456 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Sedimentology: 456 Seismisk interpretasjon / Seismic interpretation Tektonikk / Tectonics Lasabuda, Amando Putra Ersaid Laberg, Jan Sverre Knutsen, Stig-Morten Høgseth, Gert Early to middle Cenozoic paleoenvironment and erosion estimates of the southwestern Barents Sea: Insights from a regional mass-balance approach |
topic_facet |
VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Sedimentologi: 456 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Sedimentology: 456 Seismisk interpretasjon / Seismic interpretation Tektonikk / Tectonics |
description |
Accepted manuscript version, licensed CC BY-NC-ND 4.0 . Published version available at https://doi.org/10.1016/j.marpetgeo.2018.05.039 . The Cenozoic pre-glacial development of the southwestern Barents Sea is discussed, with focus on the early to middle Cenozoic net erosion that was poorly constrained. From 2D and 3D seismic mapping, the western Barents Sea continental margin development shows a complex history of structural configuration of highs and basins related to the Greenland and Eurasian plate movement and subsequent seafloor spreading in the Norwegian-Greenland Sea. Our subdivision of the Sørvestsnaget Basin allows for a closer focus on the tectonostratigraphic development in an overall transtensional setting. To the west, the lower to middle Cenozoic sediments are observed to be systematically overlying the oceanic crust in the Lofoten Basin in accordance to the progressive seafloor's opening. Based on interpretation of five seismic units including sediment progradation (clinoforms) as well as lithology information from exploration wells, the paleoenvironments for the Paleocene, Eocene, Oligocene, and Neogene periods were reconstructed. The mass-balance approach has then been used to quantify the corresponding erosion of the southwestern Barents Sea source area. The Stappen High, the Loppa High, and part of mainland Northern Norway are proposed as the key drainage areas covering a combined area of 191,500 to 334,000 km 2 , depending on the location of its eastern limit. Our result shows that an average net erosion of 858–1362 m and an average erosion rate of 0.014–0.021 m/k.y have characterized the Cenozoic pre-glacial period. The calculated sediment discharge is 8.7 × 10 6 t/y and the sediment yield is 26.2–45.7 t/km 2 /y. Comparison with present-day fluvial systems shows a similar rate of sediment discharge suggesting that our estimates are reasonable. The pre-glacial sedimentation rate is estimated to be 0.026–0.071 m/k.y, which is on average one order of magnitude lower than for the preceding glacial period characterizing this area. |
format |
Article in Journal/Newspaper |
author |
Lasabuda, Amando Putra Ersaid Laberg, Jan Sverre Knutsen, Stig-Morten Høgseth, Gert |
author_facet |
Lasabuda, Amando Putra Ersaid Laberg, Jan Sverre Knutsen, Stig-Morten Høgseth, Gert |
author_sort |
Lasabuda, Amando Putra Ersaid |
title |
Early to middle Cenozoic paleoenvironment and erosion estimates of the southwestern Barents Sea: Insights from a regional mass-balance approach |
title_short |
Early to middle Cenozoic paleoenvironment and erosion estimates of the southwestern Barents Sea: Insights from a regional mass-balance approach |
title_full |
Early to middle Cenozoic paleoenvironment and erosion estimates of the southwestern Barents Sea: Insights from a regional mass-balance approach |
title_fullStr |
Early to middle Cenozoic paleoenvironment and erosion estimates of the southwestern Barents Sea: Insights from a regional mass-balance approach |
title_full_unstemmed |
Early to middle Cenozoic paleoenvironment and erosion estimates of the southwestern Barents Sea: Insights from a regional mass-balance approach |
title_sort |
early to middle cenozoic paleoenvironment and erosion estimates of the southwestern barents sea: insights from a regional mass-balance approach |
publisher |
Elsevier |
publishDate |
2018 |
url |
https://hdl.handle.net/10037/14428 https://doi.org/10.1016/j.marpetgeo.2018.05.039 |
long_lat |
ENVELOPE(4.000,4.000,70.000,70.000) ENVELOPE(22.351,22.351,70.240,70.240) ENVELOPE(17.500,17.500,73.667,73.667) |
geographic |
Barents Sea Greenland Lofoten Lofoten Basin Loppa Norway Sørvestsnaget |
geographic_facet |
Barents Sea Greenland Lofoten Lofoten Basin Loppa Norway Sørvestsnaget |
genre |
Arctic Barents Sea Greenland Greenland Sea Lofoten Loppa Northern Norway |
genre_facet |
Arctic Barents Sea Greenland Greenland Sea Lofoten Loppa Northern Norway |
op_relation |
Marine and Petroleum Geology info:eu-repo/grantAgreement/RCN/PETROSENTR/228107/Norway/Research Centre for Arctic Petroleum Exploration/ARCEx/ Lasabuda, A. L., Laberg, J. S., Knutsen, S. & Høgseth, G. (2018). Early to middle Cenozoic paleoenvironment and erosion estimates of the southwestern Barents Sea: Insights from a regional mass-balance approach. Marine and Petroleum Geology 96, 501-521. https://doi.org/10.1016/j.marpetgeo.2018.05.039 FRIDAID 1590272 doi:10.1016/j.marpetgeo.2018.05.039 0264-8172 1873-4073 https://hdl.handle.net/10037/14428 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1016/j.marpetgeo.2018.05.039 |
container_title |
Marine and Petroleum Geology |
container_volume |
96 |
container_start_page |
501 |
op_container_end_page |
521 |
_version_ |
1766300991816204288 |