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Part 1: Document Description
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Citation |
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Title: |
Replication data for: Contrasting Neogene–Quaternary continental margin evolution offshore mid-north Norway: Implications for source-to-sink systems |
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Identification Number: |
doi:10.18710/DWOUPL |
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Distributor: |
DataverseNO |
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Date of Distribution: |
2023-01-05 |
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Version: |
1 |
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Bibliographic Citation: |
Bjordal-Olsen, Stine; Rydningen, Tom Arne; Laberg, Jan Sverre; Lasabuda, Amando P.E.; Knutsen, Stig-Morten, 2023, "Replication data for: Contrasting Neogene–Quaternary continental margin evolution offshore mid-north Norway: Implications for source-to-sink systems", https://doi.org/10.18710/DWOUPL, DataverseNO, V1 |
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Citation |
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Title: |
Replication data for: Contrasting Neogene–Quaternary continental margin evolution offshore mid-north Norway: Implications for source-to-sink systems |
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Identification Number: |
doi:10.18710/DWOUPL |
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Authoring Entity: |
Bjordal-Olsen, Stine (UiT The Arctic University of Norway) |
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Rydningen, Tom Arne (UiT The Arctic University of Norway) |
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Laberg, Jan Sverre (UiT The Arctic University of Norway) |
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Lasabuda, Amando P.E. (UiT The Arctic University of Norway) |
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Knutsen, Stig-Morten (The Norwegian Petroleum Directorate) |
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Other identifications and acknowledgements: |
UiT The Arctic University of Norway |
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Producer: |
UiT The Arctic University of Norway |
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Software used in Production: |
Delph |
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Software used in Production: |
Petrel |
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Software used in Production: |
SeisSpace |
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Distributor: |
DataverseNO |
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Distributor: |
UiT The Arctic University of Norway |
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Access Authority: |
Laberg, Jan Sverre |
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Depositor: |
Bjordal-Olsen, Stine |
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Date of Deposit: |
2022-12-12 |
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Holdings Information: |
https://doi.org/10.18710/DWOUPL |
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Study Scope |
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Keywords: |
Earth and Environmental Sciences, Seismic, Seismic interpretation, Seismic stratigraphy, Mid-Norwegian margin, Lofoten-Vesterålen margin |
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Abstract: |
The dataset contains 5 seismic surveys of single-channel 2D seismic lines (62 in total) on the mid-Norwegian and Lofoten-Vesterålen continental margins (in the area of the Norwegian Sea, Vøring Marginal High and Lofoten Basin). These lines were collected by UiT The Arctic University of Norway during cruises in 2000, 2001, 2002, 2003 and 2010 with R/V Jan Mayen (now R/V Helmer Hanssen). The data is used in the accepted manuscript entitled "Contrasting Neogene-Quaternary continental margin evolution offshore mid-north Norway: Implications for source-to-sink systems".<br><br> |
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Abstract: The Neogene–Quaternary development of the ~700 km long mid-Norwegian and Lofoten–Vesterålen continental margin is reconstructed using a dense grid of 2D seismic data and exploration wellbores. Overall, widespread ocean current-controlled contourite drifts built up along the whole margin segment from the mid-Miocene onwards (c. 11 Ma, Kai Formation). The onset (c. 8.8 Ma) of a large inner shelf progradation (Molo Formation) was, however, restricted to the southern part of the study area, the inner mid-Norwegian shelf. In the Quaternary (c. 2.7 Ma), grounded ice sheets have repeatedly brought large sediment volumes (Naust Formation) to the shelf beyond the Molo Formation. A similar build-out is less pronounced further north, where contourite drift growth instead continued and resulted in build-up of the Lofoten and Vesterålen drifts. In contrast, the drifts of the southern part of the study area occur stratigraphically below, interbedded with and distal to the progradational Molo and Naust deposits.<br><br>The study area exemplifies pronounced variability in Neogene–Quaternary continental margin growth. The wide and gently dipping mid-Norwegian margin facilitated coastal and shelf progradation related to fluvial and glacial processes, while the narrow and steep Lofoten–Vesterålen margin received little input from these sources although exposed to the same paleoclimate. Instead, erosion of canyons promoted downslope reworking across the slope and into the deep basins. This is interpreted to be controlled by the size of the onshore source area, having an alpine relief in the north resulting in a small source area and thus low fluvial and glacial sediment input. To the south, hinterland relief allowed for a much larger fluvial and later, glacial source area. Both margin segments were throughout the studied period also influenced by contour currents, and we emphasize their importance for understanding the role of erosion and deposition in source-to-sink systems, and thus the need for these processes to be integrated within future source-to-sink models. |
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Date of Collection: |
2000-07-03-2010-06-06 |
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Country: |
Norway |
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Geographic Coverage: |
Mid-Norwegian and Lofoten-Vesterålen margin |
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Geographic Bounding Box: |
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Kind of Data: |
2D seismic data (unprocessed and unmigrated) |
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Methodology and Processing |
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Sources Statement |
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Data Access |
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Other Study Description Materials |
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Related Publications |
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Citation |
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Title: |
Bjordal-Olsen, S., Rydningen, T. A., Laberg, J. S., Lasabuda, A. P. E., & Knutsen, S.-M. (2023). Contrasting Neogene–Quaternary continental margin evolution offshore mid-north Norway: Implications for source-to-sink systems. Marine Geology, 456, 106974. https://doi.org/10.1016/j.margeo.2022.106974 |
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Identification Number: |
10.1016/j.margeo.2022.106974 |
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Bibliographic Citation: |
Bjordal-Olsen, S., Rydningen, T. A., Laberg, J. S., Lasabuda, A. P. E., & Knutsen, S.-M. (2023). Contrasting Neogene–Quaternary continental margin evolution offshore mid-north Norway: Implications for source-to-sink systems. Marine Geology, 456, 106974. https://doi.org/10.1016/j.margeo.2022.106974 |
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