Palynostratigraphy of the lower Paleogene Margaret Formation at Stenkul Fiord, Ellesmere Island, Nunavut, Canada
The upper Paleocene to lower Eocene Margaret Formation exposed at Stenkul Fiord on southern Ellesmere Island, Nunavut, Canada, represents a nearly continuous terrestrial succession of microfossil-rich clastic sediments and coal. These strata were deposited at a time of extensive tectonic activity as...
Published in: | Palynology |
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Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2021
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ftuniaarhuspubl:oai:pure.atira.dk:publications/94a1aeeb-3a92-4aae-8e9e-d872e0a6e5a0 2023-12-31T10:03:35+01:00 Palynostratigraphy of the lower Paleogene Margaret Formation at Stenkul Fiord, Ellesmere Island, Nunavut, Canada Sudermann, Markus Galloway, Jennifer Margaret Greenwood, David R. West, Christopher K. Reinhardt, Lutz 2021 https://pure.au.dk/portal/da/publications/palynostratigraphy-of-the-lower-paleogene-margaret-formation-at-stenkul-fiord-ellesmere-island-nunavut-canada(94a1aeeb-3a92-4aae-8e9e-d872e0a6e5a0).html https://doi.org/10.1080/01916122.2020.1861121 eng eng https://pure.au.dk/portal/da/publications/palynostratigraphy-of-the-lower-paleogene-margaret-formation-at-stenkul-fiord-ellesmere-island-nunavut-canada(94a1aeeb-3a92-4aae-8e9e-d872e0a6e5a0).html info:eu-repo/semantics/openAccess Sudermann , M , Galloway , J M , Greenwood , D R , West , C K & Reinhardt , L 2021 , ' Palynostratigraphy of the lower Paleogene Margaret Formation at Stenkul Fiord, Ellesmere Island, Nunavut, Canada ' , Palynology , vol. 45 , no. 3 , pp. 459-476 . https://doi.org/10.1080/01916122.2020.1861121 Arctic ETM2 Eocene Eurekan deformation PETM palynostratigraphy pollen zone article 2021 ftuniaarhuspubl https://doi.org/10.1080/01916122.2020.1861121 2023-12-07T00:04:27Z The upper Paleocene to lower Eocene Margaret Formation exposed at Stenkul Fiord on southern Ellesmere Island, Nunavut, Canada, represents a nearly continuous terrestrial succession of microfossil-rich clastic sediments and coal. These strata were deposited at a time of extensive tectonic activity associated with Eurekan deformation. The precise chronology of the Eurekan deformation is poorly known. Prior studies at Stenkul Fiord provided a stratigraphic overview and relative age estimates for exposed strata but lack the absolute age control required to investigate the timing of deformation events. Strata at Stenkul Fiord preserve evidence of Arctic forests that may have grown during hyperthermal events that characterized the Paleogene, namely, the Paleocene-Eocene Thermal Maximum (PETM) and Eocene Thermal Maximum 2 (ETM2). A quantitative palynological approach is herein used to define a new higher-resolution biostratigraphic framework for the Margaret Formation strata at Stenkul Fiord. This resulting improved biostratigraphic framework is integrated with new absolute age control of 53.7 ± 0.06 Ma provided by U-Pb ID-TIMS of zircon preserved in an ash bed within the studied succession. Nine pollen zones are defined based on cluster analysis, NMDS ordination, first- and last occurrences of taxa, and angiosperm pollen taxa diversity (H′). The presence of thermophilic pollen taxa at Stenkul Fiord provides evidence of climates related to the globally warm climates during the early Paleogene. Article in Journal/Newspaper Arctic Ellesmere Island Nunavut Aarhus University: Research Palynology 1 18 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Arctic ETM2 Eocene Eurekan deformation PETM palynostratigraphy pollen zone |
spellingShingle |
Arctic ETM2 Eocene Eurekan deformation PETM palynostratigraphy pollen zone Sudermann, Markus Galloway, Jennifer Margaret Greenwood, David R. West, Christopher K. Reinhardt, Lutz Palynostratigraphy of the lower Paleogene Margaret Formation at Stenkul Fiord, Ellesmere Island, Nunavut, Canada |
topic_facet |
Arctic ETM2 Eocene Eurekan deformation PETM palynostratigraphy pollen zone |
description |
The upper Paleocene to lower Eocene Margaret Formation exposed at Stenkul Fiord on southern Ellesmere Island, Nunavut, Canada, represents a nearly continuous terrestrial succession of microfossil-rich clastic sediments and coal. These strata were deposited at a time of extensive tectonic activity associated with Eurekan deformation. The precise chronology of the Eurekan deformation is poorly known. Prior studies at Stenkul Fiord provided a stratigraphic overview and relative age estimates for exposed strata but lack the absolute age control required to investigate the timing of deformation events. Strata at Stenkul Fiord preserve evidence of Arctic forests that may have grown during hyperthermal events that characterized the Paleogene, namely, the Paleocene-Eocene Thermal Maximum (PETM) and Eocene Thermal Maximum 2 (ETM2). A quantitative palynological approach is herein used to define a new higher-resolution biostratigraphic framework for the Margaret Formation strata at Stenkul Fiord. This resulting improved biostratigraphic framework is integrated with new absolute age control of 53.7 ± 0.06 Ma provided by U-Pb ID-TIMS of zircon preserved in an ash bed within the studied succession. Nine pollen zones are defined based on cluster analysis, NMDS ordination, first- and last occurrences of taxa, and angiosperm pollen taxa diversity (H′). The presence of thermophilic pollen taxa at Stenkul Fiord provides evidence of climates related to the globally warm climates during the early Paleogene. |
format |
Article in Journal/Newspaper |
author |
Sudermann, Markus Galloway, Jennifer Margaret Greenwood, David R. West, Christopher K. Reinhardt, Lutz |
author_facet |
Sudermann, Markus Galloway, Jennifer Margaret Greenwood, David R. West, Christopher K. Reinhardt, Lutz |
author_sort |
Sudermann, Markus |
title |
Palynostratigraphy of the lower Paleogene Margaret Formation at Stenkul Fiord, Ellesmere Island, Nunavut, Canada |
title_short |
Palynostratigraphy of the lower Paleogene Margaret Formation at Stenkul Fiord, Ellesmere Island, Nunavut, Canada |
title_full |
Palynostratigraphy of the lower Paleogene Margaret Formation at Stenkul Fiord, Ellesmere Island, Nunavut, Canada |
title_fullStr |
Palynostratigraphy of the lower Paleogene Margaret Formation at Stenkul Fiord, Ellesmere Island, Nunavut, Canada |
title_full_unstemmed |
Palynostratigraphy of the lower Paleogene Margaret Formation at Stenkul Fiord, Ellesmere Island, Nunavut, Canada |
title_sort |
palynostratigraphy of the lower paleogene margaret formation at stenkul fiord, ellesmere island, nunavut, canada |
publishDate |
2021 |
url |
https://pure.au.dk/portal/da/publications/palynostratigraphy-of-the-lower-paleogene-margaret-formation-at-stenkul-fiord-ellesmere-island-nunavut-canada(94a1aeeb-3a92-4aae-8e9e-d872e0a6e5a0).html https://doi.org/10.1080/01916122.2020.1861121 |
genre |
Arctic Ellesmere Island Nunavut |
genre_facet |
Arctic Ellesmere Island Nunavut |
op_source |
Sudermann , M , Galloway , J M , Greenwood , D R , West , C K & Reinhardt , L 2021 , ' Palynostratigraphy of the lower Paleogene Margaret Formation at Stenkul Fiord, Ellesmere Island, Nunavut, Canada ' , Palynology , vol. 45 , no. 3 , pp. 459-476 . https://doi.org/10.1080/01916122.2020.1861121 |
op_relation |
https://pure.au.dk/portal/da/publications/palynostratigraphy-of-the-lower-paleogene-margaret-formation-at-stenkul-fiord-ellesmere-island-nunavut-canada(94a1aeeb-3a92-4aae-8e9e-d872e0a6e5a0).html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1080/01916122.2020.1861121 |
container_title |
Palynology |
container_start_page |
1 |
op_container_end_page |
18 |
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1786823473053564928 |