The Triassic of Traill Ø and Geographical Society Ø, East Greenland: Implications for North Atlantic palaeogeography
The continental Triassic succession north of 72° in East Greenland has seen little investigation but is key in understanding how facies belts vary towards the East Greenland Shelf, and more widely in the North Atlantic region, through this period. This study presents sedimentological analysis of exp...
Published in: | Geological Journal |
---|---|
Main Authors: | , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2018
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/gj.3287 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fgj.3287 https://onlinelibrary.wiley.com/doi/pdf/10.1002/gj.3287 |
id |
crwiley:10.1002/gj.3287 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/gj.3287 2024-06-02T08:05:55+00:00 The Triassic of Traill Ø and Geographical Society Ø, East Greenland: Implications for North Atlantic palaeogeography Andrews, Steven D. Decou, Audrey Patacci, M. 2018 http://dx.doi.org/10.1002/gj.3287 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fgj.3287 https://onlinelibrary.wiley.com/doi/pdf/10.1002/gj.3287 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Geological Journal volume 54, issue 4, page 2124-2144 ISSN 0072-1050 1099-1034 journal-article 2018 crwiley https://doi.org/10.1002/gj.3287 2024-05-03T11:18:33Z The continental Triassic succession north of 72° in East Greenland has seen little investigation but is key in understanding how facies belts vary towards the East Greenland Shelf, and more widely in the North Atlantic region, through this period. This study presents sedimentological analysis of exposures in northern Traill Ø (the Mols Bjerge) and further north in northern Geographical Society Ø (Laplace Bjerg). These sections are correlated with the more widely studied succession which lies to the south, in Jameson Land and broad scale palaeogeographical reconstructions of the North Atlantic are presented. A largely continental Triassic succession of 1445 m was recorded from the Mols Bjerge. However, a 125 m thick clean sand unit (the Vega Sund Member), which includes in its upper part the Gråklint Beds, is re‐interpreted as of shallow marine origin. Over 1200 m of Triassic strata were recognized on Laplace Bjerg. Within this succession 300 m of clean, cross‐bedded sandstones are recorded and are correlated with the Vega Sund Member recorded in the Mols Bjerge. The northward increase in thickness of marine strata developed at this time provides evidence for a more extensive marine influence in the north. This work has important implications for regional palaeogeographies and the character of the Triassic succession in adjacent basins, in particular, constraining the southern extent of the Boreal Ocean during the Mid to Late Triassic. Furthermore, the correlations made places bitumen staining, reported from Laplace Bjerg, within Triassic strata, suggesting the viability of a Triassic play at depth in adjacent offshore basins. Article in Journal/Newspaper East Greenland Greenland North Atlantic Traill ø Wiley Online Library Geographical Society Ø ENVELOPE(-23.250,-23.250,72.950,72.950) Greenland Jameson Land ENVELOPE(-23.500,-23.500,71.167,71.167) Laplace ENVELOPE(141.467,141.467,-66.782,-66.782) Laplace Bjerg ENVELOPE(-22.533,-22.533,72.933,72.933) Mols Bjerge ENVELOPE(-22.433,-22.433,72.533,72.533) Sund ENVELOPE(13.644,13.644,66.207,66.207) Traill Ø ENVELOPE(-23.167,-23.167,72.533,72.533) Vega Sund ENVELOPE(-22.917,-22.917,72.783,72.783) Geological Journal 54 4 2124 2144 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
The continental Triassic succession north of 72° in East Greenland has seen little investigation but is key in understanding how facies belts vary towards the East Greenland Shelf, and more widely in the North Atlantic region, through this period. This study presents sedimentological analysis of exposures in northern Traill Ø (the Mols Bjerge) and further north in northern Geographical Society Ø (Laplace Bjerg). These sections are correlated with the more widely studied succession which lies to the south, in Jameson Land and broad scale palaeogeographical reconstructions of the North Atlantic are presented. A largely continental Triassic succession of 1445 m was recorded from the Mols Bjerge. However, a 125 m thick clean sand unit (the Vega Sund Member), which includes in its upper part the Gråklint Beds, is re‐interpreted as of shallow marine origin. Over 1200 m of Triassic strata were recognized on Laplace Bjerg. Within this succession 300 m of clean, cross‐bedded sandstones are recorded and are correlated with the Vega Sund Member recorded in the Mols Bjerge. The northward increase in thickness of marine strata developed at this time provides evidence for a more extensive marine influence in the north. This work has important implications for regional palaeogeographies and the character of the Triassic succession in adjacent basins, in particular, constraining the southern extent of the Boreal Ocean during the Mid to Late Triassic. Furthermore, the correlations made places bitumen staining, reported from Laplace Bjerg, within Triassic strata, suggesting the viability of a Triassic play at depth in adjacent offshore basins. |
author2 |
Patacci, M. |
format |
Article in Journal/Newspaper |
author |
Andrews, Steven D. Decou, Audrey |
spellingShingle |
Andrews, Steven D. Decou, Audrey The Triassic of Traill Ø and Geographical Society Ø, East Greenland: Implications for North Atlantic palaeogeography |
author_facet |
Andrews, Steven D. Decou, Audrey |
author_sort |
Andrews, Steven D. |
title |
The Triassic of Traill Ø and Geographical Society Ø, East Greenland: Implications for North Atlantic palaeogeography |
title_short |
The Triassic of Traill Ø and Geographical Society Ø, East Greenland: Implications for North Atlantic palaeogeography |
title_full |
The Triassic of Traill Ø and Geographical Society Ø, East Greenland: Implications for North Atlantic palaeogeography |
title_fullStr |
The Triassic of Traill Ø and Geographical Society Ø, East Greenland: Implications for North Atlantic palaeogeography |
title_full_unstemmed |
The Triassic of Traill Ø and Geographical Society Ø, East Greenland: Implications for North Atlantic palaeogeography |
title_sort |
triassic of traill ø and geographical society ø, east greenland: implications for north atlantic palaeogeography |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1002/gj.3287 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fgj.3287 https://onlinelibrary.wiley.com/doi/pdf/10.1002/gj.3287 |
long_lat |
ENVELOPE(-23.250,-23.250,72.950,72.950) ENVELOPE(-23.500,-23.500,71.167,71.167) ENVELOPE(141.467,141.467,-66.782,-66.782) ENVELOPE(-22.533,-22.533,72.933,72.933) ENVELOPE(-22.433,-22.433,72.533,72.533) ENVELOPE(13.644,13.644,66.207,66.207) ENVELOPE(-23.167,-23.167,72.533,72.533) ENVELOPE(-22.917,-22.917,72.783,72.783) |
geographic |
Geographical Society Ø Greenland Jameson Land Laplace Laplace Bjerg Mols Bjerge Sund Traill Ø Vega Sund |
geographic_facet |
Geographical Society Ø Greenland Jameson Land Laplace Laplace Bjerg Mols Bjerge Sund Traill Ø Vega Sund |
genre |
East Greenland Greenland North Atlantic Traill ø |
genre_facet |
East Greenland Greenland North Atlantic Traill ø |
op_source |
Geological Journal volume 54, issue 4, page 2124-2144 ISSN 0072-1050 1099-1034 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/gj.3287 |
container_title |
Geological Journal |
container_volume |
54 |
container_issue |
4 |
container_start_page |
2124 |
op_container_end_page |
2144 |
_version_ |
1800750797266354176 |