Upper Jurassic – Lower Cretaceous of eastern Wollaston Forland, North-East Greenland:a distal marine record of an evolving rift
Two drill cores spanning the Upper Jurassic – Lower Cretaceous succession in Wollaston Forland, North-East Greenland, offer an insight into mud accumulation in an evolving distal fault block. Previous studies have revealed the presence of long-lasting black mudstone accumulation extending through th...
Published in: | GEUS Bulletin |
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Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2023
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Online Access: | https://curis.ku.dk/portal/da/publications/upper-jurassic--lower-cretaceous-of-eastern-wollaston-forland-northeast-greenland(c7c57031-d07a-492a-9499-ae52b17c144a).html https://doi.org/10.34194/geusb.v55.8349 https://curis.ku.dk/ws/files/379034511/GEUSB_A_8349_O.pdf |
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ftcopenhagenunip:oai:pure.atira.dk:publications/c7c57031-d07a-492a-9499-ae52b17c144a 2024-06-09T07:45:40+00:00 Upper Jurassic – Lower Cretaceous of eastern Wollaston Forland, North-East Greenland:a distal marine record of an evolving rift Hovikoski, Jussi Ineson, Jon R. Olivarius, Mette Bojesen-Koefoed, Jørgen A. Piasecki, Stefan Alsen, Peter 2023 application/pdf https://curis.ku.dk/portal/da/publications/upper-jurassic--lower-cretaceous-of-eastern-wollaston-forland-northeast-greenland(c7c57031-d07a-492a-9499-ae52b17c144a).html https://doi.org/10.34194/geusb.v55.8349 https://curis.ku.dk/ws/files/379034511/GEUSB_A_8349_O.pdf eng eng info:eu-repo/semantics/openAccess Hovikoski , J , Ineson , J R , Olivarius , M , Bojesen-Koefoed , J A , Piasecki , S & Alsen , P 2023 , ' Upper Jurassic – Lower Cretaceous of eastern Wollaston Forland, North-East Greenland : a distal marine record of an evolving rift ' , GEUS Bulletin , vol. 55 , 8349 . https://doi.org/10.34194/geusb.v55.8349 Bernbjerg Formation Early Cretaceous Greenland Late Jurassic Lindemans Bugt Formation mudstone Palnatokes Bjerg Formation Stratumbjerg Formation article 2023 ftcopenhagenunip https://doi.org/10.34194/geusb.v55.8349 2024-05-16T11:29:31Z Two drill cores spanning the Upper Jurassic – Lower Cretaceous succession in Wollaston Forland, North-East Greenland, offer an insight into mud accumulation in an evolving distal fault block. Previous studies have revealed the presence of long-lasting black mudstone accumulation extending through the oxygen-restricted early rift and rift climax phases (Bernbjerg and Lindemans Bugt Formations). Here, we present a detailed description of the sedimentary succession extending into the late syn-rift settings (Palnatokes Bjerg and Stratumbjerg Formations). The results indicate that the Kimmeridgian – lower Volgian early rift-phase was characterised by suspension settling and millimetre-scale event deposition in a tectonically affected, prodeltaic offshore setting. The event-related depositional processes are recorded by starved wave ripples, scour-and-fill structures, putative mud-floccule ripples and mud-dominated gravity-flow deposits. During the middle Volgian – Ryazanian rift climax, the depositional environment evolved into a narrow half-graben that was detached from the proximal depocentre flanking the deltaic coastline, itself dominated by coarse sediment. The correlative sedimentary facies in the detached half-graben are bioclastic and pyrite-rich black mudstones, which document suspension settling and gravity-flow or mass-wasting deposition in sub-storm wave-base slope and basin-floor environments. Black mudstone sedimentation ended abruptly in the late Ryazanian when the accumulation of condensed, bioturbated deep marine marls coincided with broader oceanographic reorganisation concomitant with waning rift activity in the west. Deposition of red bioclastic mudstones with a common gravity-flow component characterised the Hauterivian, potentially representing final draping of the submerged fault block crest. The top of the cored succession is demarcated by dark grey bioturbated mudstones of Barremian age, reflecting the onset of regionally continuous deep marine mud accumulation in thermally subsiding basins. ... Article in Journal/Newspaper East Greenland Greenland Wollaston forland University of Copenhagen: Research Crest The ENVELOPE(-56.992,-56.992,-63.406,-63.406) Greenland Wollaston ENVELOPE(-60.790,-60.790,-63.668,-63.668) Wollaston Forland ENVELOPE(-19.861,-19.861,74.476,74.476) GEUS Bulletin 55 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
Bernbjerg Formation Early Cretaceous Greenland Late Jurassic Lindemans Bugt Formation mudstone Palnatokes Bjerg Formation Stratumbjerg Formation |
spellingShingle |
Bernbjerg Formation Early Cretaceous Greenland Late Jurassic Lindemans Bugt Formation mudstone Palnatokes Bjerg Formation Stratumbjerg Formation Hovikoski, Jussi Ineson, Jon R. Olivarius, Mette Bojesen-Koefoed, Jørgen A. Piasecki, Stefan Alsen, Peter Upper Jurassic – Lower Cretaceous of eastern Wollaston Forland, North-East Greenland:a distal marine record of an evolving rift |
topic_facet |
Bernbjerg Formation Early Cretaceous Greenland Late Jurassic Lindemans Bugt Formation mudstone Palnatokes Bjerg Formation Stratumbjerg Formation |
description |
Two drill cores spanning the Upper Jurassic – Lower Cretaceous succession in Wollaston Forland, North-East Greenland, offer an insight into mud accumulation in an evolving distal fault block. Previous studies have revealed the presence of long-lasting black mudstone accumulation extending through the oxygen-restricted early rift and rift climax phases (Bernbjerg and Lindemans Bugt Formations). Here, we present a detailed description of the sedimentary succession extending into the late syn-rift settings (Palnatokes Bjerg and Stratumbjerg Formations). The results indicate that the Kimmeridgian – lower Volgian early rift-phase was characterised by suspension settling and millimetre-scale event deposition in a tectonically affected, prodeltaic offshore setting. The event-related depositional processes are recorded by starved wave ripples, scour-and-fill structures, putative mud-floccule ripples and mud-dominated gravity-flow deposits. During the middle Volgian – Ryazanian rift climax, the depositional environment evolved into a narrow half-graben that was detached from the proximal depocentre flanking the deltaic coastline, itself dominated by coarse sediment. The correlative sedimentary facies in the detached half-graben are bioclastic and pyrite-rich black mudstones, which document suspension settling and gravity-flow or mass-wasting deposition in sub-storm wave-base slope and basin-floor environments. Black mudstone sedimentation ended abruptly in the late Ryazanian when the accumulation of condensed, bioturbated deep marine marls coincided with broader oceanographic reorganisation concomitant with waning rift activity in the west. Deposition of red bioclastic mudstones with a common gravity-flow component characterised the Hauterivian, potentially representing final draping of the submerged fault block crest. The top of the cored succession is demarcated by dark grey bioturbated mudstones of Barremian age, reflecting the onset of regionally continuous deep marine mud accumulation in thermally subsiding basins. ... |
format |
Article in Journal/Newspaper |
author |
Hovikoski, Jussi Ineson, Jon R. Olivarius, Mette Bojesen-Koefoed, Jørgen A. Piasecki, Stefan Alsen, Peter |
author_facet |
Hovikoski, Jussi Ineson, Jon R. Olivarius, Mette Bojesen-Koefoed, Jørgen A. Piasecki, Stefan Alsen, Peter |
author_sort |
Hovikoski, Jussi |
title |
Upper Jurassic – Lower Cretaceous of eastern Wollaston Forland, North-East Greenland:a distal marine record of an evolving rift |
title_short |
Upper Jurassic – Lower Cretaceous of eastern Wollaston Forland, North-East Greenland:a distal marine record of an evolving rift |
title_full |
Upper Jurassic – Lower Cretaceous of eastern Wollaston Forland, North-East Greenland:a distal marine record of an evolving rift |
title_fullStr |
Upper Jurassic – Lower Cretaceous of eastern Wollaston Forland, North-East Greenland:a distal marine record of an evolving rift |
title_full_unstemmed |
Upper Jurassic – Lower Cretaceous of eastern Wollaston Forland, North-East Greenland:a distal marine record of an evolving rift |
title_sort |
upper jurassic – lower cretaceous of eastern wollaston forland, north-east greenland:a distal marine record of an evolving rift |
publishDate |
2023 |
url |
https://curis.ku.dk/portal/da/publications/upper-jurassic--lower-cretaceous-of-eastern-wollaston-forland-northeast-greenland(c7c57031-d07a-492a-9499-ae52b17c144a).html https://doi.org/10.34194/geusb.v55.8349 https://curis.ku.dk/ws/files/379034511/GEUSB_A_8349_O.pdf |
long_lat |
ENVELOPE(-56.992,-56.992,-63.406,-63.406) ENVELOPE(-60.790,-60.790,-63.668,-63.668) ENVELOPE(-19.861,-19.861,74.476,74.476) |
geographic |
Crest The Greenland Wollaston Wollaston Forland |
geographic_facet |
Crest The Greenland Wollaston Wollaston Forland |
genre |
East Greenland Greenland Wollaston forland |
genre_facet |
East Greenland Greenland Wollaston forland |
op_source |
Hovikoski , J , Ineson , J R , Olivarius , M , Bojesen-Koefoed , J A , Piasecki , S & Alsen , P 2023 , ' Upper Jurassic – Lower Cretaceous of eastern Wollaston Forland, North-East Greenland : a distal marine record of an evolving rift ' , GEUS Bulletin , vol. 55 , 8349 . https://doi.org/10.34194/geusb.v55.8349 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.34194/geusb.v55.8349 |
container_title |
GEUS Bulletin |
container_volume |
55 |
_version_ |
1801375140920950784 |