Wood Jams Or Beaver Dams? Pliocene Life, Sediment And Landscape Interactions In The Canadian High Arctic
Accepted for publication in PALAIOS as of 07.03.2022. During the mid-Pliocene (Zanclean, ca. ~ 3.9 Ma), parts of the Canadian High Arctic experienced mean annual temperatures that were 14–228C warmer than today and supported diverse boreal-type forests. The landscapes of this vegetated polar region...
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Online Access: | https://hdl.handle.net/10037/26834 https://doi.org/10.2110/palo.2021.065 |
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ftunivtroemsoe:oai:munin.uit.no:10037/26834 2023-05-15T14:28:59+02:00 Wood Jams Or Beaver Dams? Pliocene Life, Sediment And Landscape Interactions In The Canadian High Arctic Davies, Neil S. Gosse, John C Rouillard, Alexandra Rybczynski, Natalia Meng, Jing Reyes, Alberto V. Kiguktak, Jarloo 2022-06-28 https://hdl.handle.net/10037/26834 https://doi.org/10.2110/palo.2021.065 eng eng SEPM Palaios Norges forskningsråd: 294929 Andre: NSERC 06785-19 Andre: NSERC 362148-19 FRIDAID 2039235 doi:10.2110/palo.2021.065 0883-1351 1938-5323 https://hdl.handle.net/10037/26834 openAccess Copyright 2022 The Author(s) Journal article Tidsskriftartikkel Peer reviewed acceptedVersion 2022 ftunivtroemsoe https://doi.org/10.2110/palo.2021.065 2022-09-21T23:00:39Z Accepted for publication in PALAIOS as of 07.03.2022. During the mid-Pliocene (Zanclean, ca. ~ 3.9 Ma), parts of the Canadian High Arctic experienced mean annual temperatures that were 14–228C warmer than today and supported diverse boreal-type forests. The landscapes of this vegetated polar region left behind a fragmented sedimentary record that crops out across several islands in the Canadian Arctic Archipelago as the Beaufort Formation and correlative strata. Paleoecological information from these strata provides a high-fidelity window onto Pliocene environments, and prominent fossil sites yield unparalleled insights into Cenozoic mammal evolution. Significantly, many of the strata reveal evidence for life-sediment interactions in a warm-climate Arctic, most notably in the form of extensive woody debris and phytoclast deposits. This paper presents original field data that refines the sedimentological context of plant debris accumulations from the anactualistic High Arctic forests, most notably at the ‘Fyles Leaf Beds’ and ‘Beaver Pond’ fossil-bearing sites in the ‘high terrace deposits’ of central Ellesmere Island. The former is a remarkably well-preserved, leaf-rich deposit that is part of a complex of facies associations representing lacustrine, fluvio-deltaic and mire deposition above a paleotopographic unconformity. The latter yields tooth-marked woody debris within a peat layer that also contains a rich assemblage of vertebrate and plant fossils including abundant remains from the extinct beaver-group Dipoides. Here we present sedimentological data that provide circumstantial evidence that the woody debris deposit at Beaver Pond could record dam-building in the genus, by comparing the facies motif with new data from known Holocene beaver dam facies in England. Across the Pliocene of the High Arctic region, woody debris accumulations are shown to represent an array of biosedimentary deposits and landforms including mires, driftcretions, woody bedforms, and possible beaver dams, which help to ... Article in Journal/Newspaper Arctic Archipelago Arctic Canadian Arctic Archipelago Ellesmere Island University of Tromsø: Munin Open Research Archive Arctic Ellesmere Island Canadian Arctic Archipelago Beaver Pond ENVELOPE(-56.848,-56.848,49.600,49.600) PALAIOS 37 6 330 347 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
description |
Accepted for publication in PALAIOS as of 07.03.2022. During the mid-Pliocene (Zanclean, ca. ~ 3.9 Ma), parts of the Canadian High Arctic experienced mean annual temperatures that were 14–228C warmer than today and supported diverse boreal-type forests. The landscapes of this vegetated polar region left behind a fragmented sedimentary record that crops out across several islands in the Canadian Arctic Archipelago as the Beaufort Formation and correlative strata. Paleoecological information from these strata provides a high-fidelity window onto Pliocene environments, and prominent fossil sites yield unparalleled insights into Cenozoic mammal evolution. Significantly, many of the strata reveal evidence for life-sediment interactions in a warm-climate Arctic, most notably in the form of extensive woody debris and phytoclast deposits. This paper presents original field data that refines the sedimentological context of plant debris accumulations from the anactualistic High Arctic forests, most notably at the ‘Fyles Leaf Beds’ and ‘Beaver Pond’ fossil-bearing sites in the ‘high terrace deposits’ of central Ellesmere Island. The former is a remarkably well-preserved, leaf-rich deposit that is part of a complex of facies associations representing lacustrine, fluvio-deltaic and mire deposition above a paleotopographic unconformity. The latter yields tooth-marked woody debris within a peat layer that also contains a rich assemblage of vertebrate and plant fossils including abundant remains from the extinct beaver-group Dipoides. Here we present sedimentological data that provide circumstantial evidence that the woody debris deposit at Beaver Pond could record dam-building in the genus, by comparing the facies motif with new data from known Holocene beaver dam facies in England. Across the Pliocene of the High Arctic region, woody debris accumulations are shown to represent an array of biosedimentary deposits and landforms including mires, driftcretions, woody bedforms, and possible beaver dams, which help to ... |
format |
Article in Journal/Newspaper |
author |
Davies, Neil S. Gosse, John C Rouillard, Alexandra Rybczynski, Natalia Meng, Jing Reyes, Alberto V. Kiguktak, Jarloo |
spellingShingle |
Davies, Neil S. Gosse, John C Rouillard, Alexandra Rybczynski, Natalia Meng, Jing Reyes, Alberto V. Kiguktak, Jarloo Wood Jams Or Beaver Dams? Pliocene Life, Sediment And Landscape Interactions In The Canadian High Arctic |
author_facet |
Davies, Neil S. Gosse, John C Rouillard, Alexandra Rybczynski, Natalia Meng, Jing Reyes, Alberto V. Kiguktak, Jarloo |
author_sort |
Davies, Neil S. |
title |
Wood Jams Or Beaver Dams? Pliocene Life, Sediment And Landscape Interactions In The Canadian High Arctic |
title_short |
Wood Jams Or Beaver Dams? Pliocene Life, Sediment And Landscape Interactions In The Canadian High Arctic |
title_full |
Wood Jams Or Beaver Dams? Pliocene Life, Sediment And Landscape Interactions In The Canadian High Arctic |
title_fullStr |
Wood Jams Or Beaver Dams? Pliocene Life, Sediment And Landscape Interactions In The Canadian High Arctic |
title_full_unstemmed |
Wood Jams Or Beaver Dams? Pliocene Life, Sediment And Landscape Interactions In The Canadian High Arctic |
title_sort |
wood jams or beaver dams? pliocene life, sediment and landscape interactions in the canadian high arctic |
publisher |
SEPM |
publishDate |
2022 |
url |
https://hdl.handle.net/10037/26834 https://doi.org/10.2110/palo.2021.065 |
long_lat |
ENVELOPE(-56.848,-56.848,49.600,49.600) |
geographic |
Arctic Ellesmere Island Canadian Arctic Archipelago Beaver Pond |
geographic_facet |
Arctic Ellesmere Island Canadian Arctic Archipelago Beaver Pond |
genre |
Arctic Archipelago Arctic Canadian Arctic Archipelago Ellesmere Island |
genre_facet |
Arctic Archipelago Arctic Canadian Arctic Archipelago Ellesmere Island |
op_relation |
Palaios Norges forskningsråd: 294929 Andre: NSERC 06785-19 Andre: NSERC 362148-19 FRIDAID 2039235 doi:10.2110/palo.2021.065 0883-1351 1938-5323 https://hdl.handle.net/10037/26834 |
op_rights |
openAccess Copyright 2022 The Author(s) |
op_doi |
https://doi.org/10.2110/palo.2021.065 |
container_title |
PALAIOS |
container_volume |
37 |
container_issue |
6 |
container_start_page |
330 |
op_container_end_page |
347 |
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1766303095510269952 |