Upper cretaceous-paleogene stratigraphy and development of the Mímir High, Vøring transform margin, Norwegian Sea
Transform margins represent strike-slip type of plate boundaries that form during continental breakup and initial ocean opening. They are often characterized by margin-parallel highs with exposed pre- and syn-rift sequences. The Vøring Transform Margin, offshore mid-Norway, initiated in the earliest...
Published in: | Marine and Petroleum Geology |
---|---|
Main Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2020
|
Subjects: | |
Online Access: | https://hdl.handle.net/11250/2764697 https://doi.org/10.1016/j.marpetgeo.2020.104717 |
id |
ftunivbergen:oai:bora.uib.no:11250/2764697 |
---|---|
record_format |
openpolar |
spelling |
ftunivbergen:oai:bora.uib.no:11250/2764697 2023-05-15T16:57:03+02:00 Upper cretaceous-paleogene stratigraphy and development of the Mímir High, Vøring transform margin, Norwegian Sea Polteau, Stephane Planke, Sverre Zastrozhnov, Dmitrii Abdelmalak, Mohamed Mansour Lebedeva-Ivanova, Nina Eckhoff Planke, Ellen Svensen, Henrik Mazzini, Adriano Gernigon, Laurent Myklebust, Reidun Kjølhamar, Bent Pedersen, Rolf B. Sandstå, Nils Rune Bünz, Stefan 2020 application/pdf https://hdl.handle.net/11250/2764697 https://doi.org/10.1016/j.marpetgeo.2020.104717 eng eng Elsevier Norges forskningsråd: 288299 Norges forskningsråd: 223259 Norges forskningsråd: 223272 urn:issn:0264-8172 https://hdl.handle.net/11250/2764697 https://doi.org/10.1016/j.marpetgeo.2020.104717 cristin:1836983 Marine and Petroleum Geology. 2020, 122, 104717. Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no Copyright 2020 Elsevier 104717 Marine and Petroleum Geology 122 Journal article Peer reviewed 2020 ftunivbergen https://doi.org/10.1016/j.marpetgeo.2020.104717 2023-03-14T17:39:44Z Transform margins represent strike-slip type of plate boundaries that form during continental breakup and initial ocean opening. They are often characterized by margin-parallel highs with exposed pre- and syn-rift sequences. The Vøring Transform Margin, offshore mid-Norway, initiated in the earliest Eocene during the opening of the NE Atlantic. Here, 2D seismic reflection data reveal a transform margin high, the Mímir High. The western flank of this undrilled structure is a kilometer-high escarpment where seismic reflections of pre-breakup age are truncated at the seafloor. The aim of this study was to recover seabed rock samples from the outcropping or shallowly buried sedimentary sequences to provide a geological tie to the regional seismic framework, thereby constraining the basin history and tectono-stratigraphic development. Seabed samples were successfully collected from 14 gravity core and Selcore stations and 10 ROV (remotely operated vehicle) sites along a 750 m high sampling profile, recovering clay, shales, sandstones and glacial dropstones. Biostratigraphy results revealed that the ages of the sedimentary rocks follow the stratigraphic order predicted by the initial seismic interpretation, with Upper Cretaceous sediments at the base and lower Eocene sediments at the top. The integrated interpretation shows that the Mímir High area, including parts of the outer Vøring and Møre basins and the proto-Jan Mayen Microplate Complex, were characterized by the deposition of late Campanian to early Maastrichtian, near coastal and shale-dominated sequences with poor source rock qualities. The early Paleocene samples indicate deep marine conditions that abruptly ended by rapid uplift of the Mímir High in the earliest Eocene. Finally, a reworked Pliensbachian palynomorph assemblage in potential early Eocene strata indicate the presence of exposed Mesozoic sequences in the vicinity of the Mímir High. We argue that some of the lower Eocene sediments where deposited within a hypothetical drainage system sourced from ... Article in Journal/Newspaper Jan Mayen Norwegian Sea University of Bergen: Bergen Open Research Archive (BORA-UiB) Jan Mayen Norway Norwegian Sea Marine and Petroleum Geology 122 104717 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
Transform margins represent strike-slip type of plate boundaries that form during continental breakup and initial ocean opening. They are often characterized by margin-parallel highs with exposed pre- and syn-rift sequences. The Vøring Transform Margin, offshore mid-Norway, initiated in the earliest Eocene during the opening of the NE Atlantic. Here, 2D seismic reflection data reveal a transform margin high, the Mímir High. The western flank of this undrilled structure is a kilometer-high escarpment where seismic reflections of pre-breakup age are truncated at the seafloor. The aim of this study was to recover seabed rock samples from the outcropping or shallowly buried sedimentary sequences to provide a geological tie to the regional seismic framework, thereby constraining the basin history and tectono-stratigraphic development. Seabed samples were successfully collected from 14 gravity core and Selcore stations and 10 ROV (remotely operated vehicle) sites along a 750 m high sampling profile, recovering clay, shales, sandstones and glacial dropstones. Biostratigraphy results revealed that the ages of the sedimentary rocks follow the stratigraphic order predicted by the initial seismic interpretation, with Upper Cretaceous sediments at the base and lower Eocene sediments at the top. The integrated interpretation shows that the Mímir High area, including parts of the outer Vøring and Møre basins and the proto-Jan Mayen Microplate Complex, were characterized by the deposition of late Campanian to early Maastrichtian, near coastal and shale-dominated sequences with poor source rock qualities. The early Paleocene samples indicate deep marine conditions that abruptly ended by rapid uplift of the Mímir High in the earliest Eocene. Finally, a reworked Pliensbachian palynomorph assemblage in potential early Eocene strata indicate the presence of exposed Mesozoic sequences in the vicinity of the Mímir High. We argue that some of the lower Eocene sediments where deposited within a hypothetical drainage system sourced from ... |
format |
Article in Journal/Newspaper |
author |
Polteau, Stephane Planke, Sverre Zastrozhnov, Dmitrii Abdelmalak, Mohamed Mansour Lebedeva-Ivanova, Nina Eckhoff Planke, Ellen Svensen, Henrik Mazzini, Adriano Gernigon, Laurent Myklebust, Reidun Kjølhamar, Bent Pedersen, Rolf B. Sandstå, Nils Rune Bünz, Stefan |
spellingShingle |
Polteau, Stephane Planke, Sverre Zastrozhnov, Dmitrii Abdelmalak, Mohamed Mansour Lebedeva-Ivanova, Nina Eckhoff Planke, Ellen Svensen, Henrik Mazzini, Adriano Gernigon, Laurent Myklebust, Reidun Kjølhamar, Bent Pedersen, Rolf B. Sandstå, Nils Rune Bünz, Stefan Upper cretaceous-paleogene stratigraphy and development of the Mímir High, Vøring transform margin, Norwegian Sea |
author_facet |
Polteau, Stephane Planke, Sverre Zastrozhnov, Dmitrii Abdelmalak, Mohamed Mansour Lebedeva-Ivanova, Nina Eckhoff Planke, Ellen Svensen, Henrik Mazzini, Adriano Gernigon, Laurent Myklebust, Reidun Kjølhamar, Bent Pedersen, Rolf B. Sandstå, Nils Rune Bünz, Stefan |
author_sort |
Polteau, Stephane |
title |
Upper cretaceous-paleogene stratigraphy and development of the Mímir High, Vøring transform margin, Norwegian Sea |
title_short |
Upper cretaceous-paleogene stratigraphy and development of the Mímir High, Vøring transform margin, Norwegian Sea |
title_full |
Upper cretaceous-paleogene stratigraphy and development of the Mímir High, Vøring transform margin, Norwegian Sea |
title_fullStr |
Upper cretaceous-paleogene stratigraphy and development of the Mímir High, Vøring transform margin, Norwegian Sea |
title_full_unstemmed |
Upper cretaceous-paleogene stratigraphy and development of the Mímir High, Vøring transform margin, Norwegian Sea |
title_sort |
upper cretaceous-paleogene stratigraphy and development of the mímir high, vøring transform margin, norwegian sea |
publisher |
Elsevier |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2764697 https://doi.org/10.1016/j.marpetgeo.2020.104717 |
geographic |
Jan Mayen Norway Norwegian Sea |
geographic_facet |
Jan Mayen Norway Norwegian Sea |
genre |
Jan Mayen Norwegian Sea |
genre_facet |
Jan Mayen Norwegian Sea |
op_source |
104717 Marine and Petroleum Geology 122 |
op_relation |
Norges forskningsråd: 288299 Norges forskningsråd: 223259 Norges forskningsråd: 223272 urn:issn:0264-8172 https://hdl.handle.net/11250/2764697 https://doi.org/10.1016/j.marpetgeo.2020.104717 cristin:1836983 Marine and Petroleum Geology. 2020, 122, 104717. |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no Copyright 2020 Elsevier |
op_doi |
https://doi.org/10.1016/j.marpetgeo.2020.104717 |
container_title |
Marine and Petroleum Geology |
container_volume |
122 |
container_start_page |
104717 |
_version_ |
1766048324646862848 |