Sedimentology and stratigraphy of the Lower Cretaceous Isachsen Formation:Ellef Ringnes Island, Sverdrup Basin, Canadian Arctic Archipelago
The Lower Cretaceous Isachsen Formation is a widespread, siliciclastic succession up to 1.4km thick that records the northwestward progradation of fluvio-deltaic environments into the Sverdrup Basin in the Canadian Arctic. Although the Isachsen Formation is a prominent unit with proven oil and gas r...
Published in: | Marine and Petroleum Geology |
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Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2014
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Online Access: | https://pure.au.dk/portal/da/publications/sedimentology-and-stratigraphy-of-the-lower-cretaceous-isachsen-formation(6016d410-a775-4a56-893d-5cde1cfd824e).html https://doi.org/10.1016/j.marpetgeo.2014.05.018 http://www.scopus.com/inward/record.url?scp=84902441484&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/6016d410-a775-4a56-893d-5cde1cfd824e 2023-05-15T14:25:19+02:00 Sedimentology and stratigraphy of the Lower Cretaceous Isachsen Formation:Ellef Ringnes Island, Sverdrup Basin, Canadian Arctic Archipelago Tullius, D. N. Leier, A. L. Galloway, J. M. Embry, A. F. Pedersen, P. K. 2014-01-01 https://pure.au.dk/portal/da/publications/sedimentology-and-stratigraphy-of-the-lower-cretaceous-isachsen-formation(6016d410-a775-4a56-893d-5cde1cfd824e).html https://doi.org/10.1016/j.marpetgeo.2014.05.018 http://www.scopus.com/inward/record.url?scp=84902441484&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Tullius , D N , Leier , A L , Galloway , J M , Embry , A F & Pedersen , P K 2014 , ' Sedimentology and stratigraphy of the Lower Cretaceous Isachsen Formation : Ellef Ringnes Island, Sverdrup Basin, Canadian Arctic Archipelago ' , Marine and Petroleum Geology , vol. 57 , pp. 135-151 . https://doi.org/10.1016/j.marpetgeo.2014.05.018 Arctic Canada Cretaceous Fluvial Nunavut Sandstone article 2014 ftuniaarhuspubl https://doi.org/10.1016/j.marpetgeo.2014.05.018 2020-10-21T22:47:54Z The Lower Cretaceous Isachsen Formation is a widespread, siliciclastic succession up to 1.4km thick that records the northwestward progradation of fluvio-deltaic environments into the Sverdrup Basin in the Canadian Arctic. Although the Isachsen Formation is a prominent unit with proven oil and gas reserves, detailed outcrop descriptions of its sedimentology and stratigraphy, and correlation of these features to subsurface data are rare. We examined outcrop exposures of the Isachsen Formation on Ellef Ringnes Island in the province of Nunavut in the Canadian Arctic in order to document and interpret the sedimentology and stratigraphy of this unit in the central portion of the Sverdrup Basin. Interpretations are based on observations from over 5000m of measured stratigraphic sections, local mapping of facies contacts, palynology, and sandstone petrography. Deposits of the Isachsen Formation on Ellef Ringnes Island can be divided into six broadly-defined facies associations that record deposition in braided-fluvial, meandering-fluvial, floodplain, tidally-influenced fluvial, shoreface, and offshore environments. Sandstones within the Isachsen Formation are typically quartzose, commonly with compositions of >90% well-rounded, monocrystalline quartz. Although the sedimentary details between outcrop locations vary, a generalized stratigraphic trend is present within the Isachsen Formation. Where exposed, the base of the unit consists of marginal marine sandstones abruptly overlain by braided stream deposits, which grade into mudstone-rich, meandering-fluvial and floodplain deposits. These nonmarine deposits are overlain by a thin marine mudstone (Rondon Member), which is in turn overlain by marginal marine sandstone and fluvial deposits. The uppermost portion of the Isachsen Formation records a transgression and is overlain by marine mudstones of the Christopher Formation. The stratigraphic succession of the Isachsen Formation in outcrops correlates to data from nearby hydrocarbon exploration wells. Stratigraphically, the Isachsen Formation on Ellef Ringnes Island represents a regressive-transgressive sequence, but contains within it two higher-order regressive-transgressive sequences, which is consistent with observations from elsewhere in the Sverdrup Basin. The detailed descriptions of facies within the Isachsen Formation on Ellef Ringnes Island and their correlation to subsurface data can be extrapolated to other parts of the Sverdrup Basin where data are lacking. Article in Journal/Newspaper Arctic Arctic Archipelago Arctic Canadian Arctic Archipelago Ellef Ringnes Island Isachsen Nunavut sverdrup basin Aarhus University: Research Arctic Canada Canadian Arctic Archipelago Ellef Ringnes Island ENVELOPE(-102.256,-102.256,78.502,78.502) Isachsen ENVELOPE(-103.505,-103.505,78.785,78.785) Nunavut Marine and Petroleum Geology 57 135 151 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Arctic Canada Cretaceous Fluvial Nunavut Sandstone |
spellingShingle |
Arctic Canada Cretaceous Fluvial Nunavut Sandstone Tullius, D. N. Leier, A. L. Galloway, J. M. Embry, A. F. Pedersen, P. K. Sedimentology and stratigraphy of the Lower Cretaceous Isachsen Formation:Ellef Ringnes Island, Sverdrup Basin, Canadian Arctic Archipelago |
topic_facet |
Arctic Canada Cretaceous Fluvial Nunavut Sandstone |
description |
The Lower Cretaceous Isachsen Formation is a widespread, siliciclastic succession up to 1.4km thick that records the northwestward progradation of fluvio-deltaic environments into the Sverdrup Basin in the Canadian Arctic. Although the Isachsen Formation is a prominent unit with proven oil and gas reserves, detailed outcrop descriptions of its sedimentology and stratigraphy, and correlation of these features to subsurface data are rare. We examined outcrop exposures of the Isachsen Formation on Ellef Ringnes Island in the province of Nunavut in the Canadian Arctic in order to document and interpret the sedimentology and stratigraphy of this unit in the central portion of the Sverdrup Basin. Interpretations are based on observations from over 5000m of measured stratigraphic sections, local mapping of facies contacts, palynology, and sandstone petrography. Deposits of the Isachsen Formation on Ellef Ringnes Island can be divided into six broadly-defined facies associations that record deposition in braided-fluvial, meandering-fluvial, floodplain, tidally-influenced fluvial, shoreface, and offshore environments. Sandstones within the Isachsen Formation are typically quartzose, commonly with compositions of >90% well-rounded, monocrystalline quartz. Although the sedimentary details between outcrop locations vary, a generalized stratigraphic trend is present within the Isachsen Formation. Where exposed, the base of the unit consists of marginal marine sandstones abruptly overlain by braided stream deposits, which grade into mudstone-rich, meandering-fluvial and floodplain deposits. These nonmarine deposits are overlain by a thin marine mudstone (Rondon Member), which is in turn overlain by marginal marine sandstone and fluvial deposits. The uppermost portion of the Isachsen Formation records a transgression and is overlain by marine mudstones of the Christopher Formation. The stratigraphic succession of the Isachsen Formation in outcrops correlates to data from nearby hydrocarbon exploration wells. Stratigraphically, the Isachsen Formation on Ellef Ringnes Island represents a regressive-transgressive sequence, but contains within it two higher-order regressive-transgressive sequences, which is consistent with observations from elsewhere in the Sverdrup Basin. The detailed descriptions of facies within the Isachsen Formation on Ellef Ringnes Island and their correlation to subsurface data can be extrapolated to other parts of the Sverdrup Basin where data are lacking. |
format |
Article in Journal/Newspaper |
author |
Tullius, D. N. Leier, A. L. Galloway, J. M. Embry, A. F. Pedersen, P. K. |
author_facet |
Tullius, D. N. Leier, A. L. Galloway, J. M. Embry, A. F. Pedersen, P. K. |
author_sort |
Tullius, D. N. |
title |
Sedimentology and stratigraphy of the Lower Cretaceous Isachsen Formation:Ellef Ringnes Island, Sverdrup Basin, Canadian Arctic Archipelago |
title_short |
Sedimentology and stratigraphy of the Lower Cretaceous Isachsen Formation:Ellef Ringnes Island, Sverdrup Basin, Canadian Arctic Archipelago |
title_full |
Sedimentology and stratigraphy of the Lower Cretaceous Isachsen Formation:Ellef Ringnes Island, Sverdrup Basin, Canadian Arctic Archipelago |
title_fullStr |
Sedimentology and stratigraphy of the Lower Cretaceous Isachsen Formation:Ellef Ringnes Island, Sverdrup Basin, Canadian Arctic Archipelago |
title_full_unstemmed |
Sedimentology and stratigraphy of the Lower Cretaceous Isachsen Formation:Ellef Ringnes Island, Sverdrup Basin, Canadian Arctic Archipelago |
title_sort |
sedimentology and stratigraphy of the lower cretaceous isachsen formation:ellef ringnes island, sverdrup basin, canadian arctic archipelago |
publishDate |
2014 |
url |
https://pure.au.dk/portal/da/publications/sedimentology-and-stratigraphy-of-the-lower-cretaceous-isachsen-formation(6016d410-a775-4a56-893d-5cde1cfd824e).html https://doi.org/10.1016/j.marpetgeo.2014.05.018 http://www.scopus.com/inward/record.url?scp=84902441484&partnerID=8YFLogxK |
long_lat |
ENVELOPE(-102.256,-102.256,78.502,78.502) ENVELOPE(-103.505,-103.505,78.785,78.785) |
geographic |
Arctic Canada Canadian Arctic Archipelago Ellef Ringnes Island Isachsen Nunavut |
geographic_facet |
Arctic Canada Canadian Arctic Archipelago Ellef Ringnes Island Isachsen Nunavut |
genre |
Arctic Arctic Archipelago Arctic Canadian Arctic Archipelago Ellef Ringnes Island Isachsen Nunavut sverdrup basin |
genre_facet |
Arctic Arctic Archipelago Arctic Canadian Arctic Archipelago Ellef Ringnes Island Isachsen Nunavut sverdrup basin |
op_source |
Tullius , D N , Leier , A L , Galloway , J M , Embry , A F & Pedersen , P K 2014 , ' Sedimentology and stratigraphy of the Lower Cretaceous Isachsen Formation : Ellef Ringnes Island, Sverdrup Basin, Canadian Arctic Archipelago ' , Marine and Petroleum Geology , vol. 57 , pp. 135-151 . https://doi.org/10.1016/j.marpetgeo.2014.05.018 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.marpetgeo.2014.05.018 |
container_title |
Marine and Petroleum Geology |
container_volume |
57 |
container_start_page |
135 |
op_container_end_page |
151 |
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1766297745681809408 |