Olympia Interstadial: vegetation, landscape history, and paleoclimatic implications of a mid-Wisconsinan (MIS3) nonglacial sequence from southwest British Columbia, Canada
Lithostratigraphic, C-14, and palynologic analyses of peat and silty peat at three nearby sites reveal a 25 000 year vegetation and climate history of the Olympia Interstade for the Fraser Lowland, British Columbia, 300 km within the southern limit of the Cordilleran Ice Sheet. At Lynn Valley, Polyp...
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Language: | English |
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Canadian Science Publishing, Nrc Research Press
2016
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Online Access: | https://archimer.ifremer.fr/doc/00421/53260/55128.pdf https://doi.org/10.1139/cjes-2015-0122 https://archimer.ifremer.fr/doc/00421/53260/ |
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ftarchimer:oai:archimer.ifremer.fr:53260 2023-06-11T04:12:52+02:00 Olympia Interstadial: vegetation, landscape history, and paleoclimatic implications of a mid-Wisconsinan (MIS3) nonglacial sequence from southwest British Columbia, Canada Hebda, Richard J. Lian, Olav B. Hicock, Stephen R. 2016-03 application/pdf https://archimer.ifremer.fr/doc/00421/53260/55128.pdf https://doi.org/10.1139/cjes-2015-0122 https://archimer.ifremer.fr/doc/00421/53260/ eng eng Canadian Science Publishing, Nrc Research Press https://archimer.ifremer.fr/doc/00421/53260/55128.pdf doi:10.1139/cjes-2015-0122 https://archimer.ifremer.fr/doc/00421/53260/ 2016, NRC Research Press or its licensors info:eu-repo/semantics/openAccess restricted use Canadian Journal Of Earth Sciences (0008-4077) (Canadian Science Publishing, Nrc Research Press), 2016-03 , Vol. 53 , N. 3 , P. 304-320 Pollen Stratigraphy Quaternary Radiocarbon dates Paleoecology text Article info:eu-repo/semantics/article 2016 ftarchimer https://doi.org/10.1139/cjes-2015-0122 2023-05-30T22:50:57Z Lithostratigraphic, C-14, and palynologic analyses of peat and silty peat at three nearby sites reveal a 25 000 year vegetation and climate history of the Olympia Interstade for the Fraser Lowland, British Columbia, 300 km within the southern limit of the Cordilleran Ice Sheet. At Lynn Valley, Polypodiaceae fern spores and nonarboreal pollen dominate >47.8 C-14 ka BP, reflecting unstable and cold landscapes. A Pinus-Poaceae zone follows, representing pine parkland and cool dry climate. Fluctuating values of Picea and Tsuga mertensiana pollen at Lynn and Seymour valleys and Port Moody characterize most of the Olympia Interstade during local peat deposition in Cyperaceae and Myrica wetlands until about 26.7 C-14 ka BP under a cool and moist climate. A brief Pinus - Tsuga heterophylla zone at Lynn Valley 44-39 C-14 ka BP suggests a climatic optimum. A Poaceae-Artemisia assemblage and deposition of silty sand after 26.7 C-14 ka BP reflect cooling and drying after which a unique Lycopodium assemblage at Lynn Valley suggests cold arid climate and Fraser Glaciation onset. These sequences have no progression to vegetation typical of warm, interglacial, Holocene-like climates, indicating an interstadial not an interglacial interval. Correlation with vegetation changes elsewhere in western North America suggests that the Olympia Interstade started about similar to 52 C-14 ka BP (similar to 57 cal ka BP) and ended about 26 C-14 ka BP (30 cal ka BP). Article in Journal/Newspaper Ice Sheet Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Canada Parkland ENVELOPE(-120.570,-120.570,55.917,55.917) Seymour ENVELOPE(-56.767,-56.767,-64.283,-64.283) Canadian Journal of Earth Sciences 53 3 304 320 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Pollen Stratigraphy Quaternary Radiocarbon dates Paleoecology |
spellingShingle |
Pollen Stratigraphy Quaternary Radiocarbon dates Paleoecology Hebda, Richard J. Lian, Olav B. Hicock, Stephen R. Olympia Interstadial: vegetation, landscape history, and paleoclimatic implications of a mid-Wisconsinan (MIS3) nonglacial sequence from southwest British Columbia, Canada |
topic_facet |
Pollen Stratigraphy Quaternary Radiocarbon dates Paleoecology |
description |
Lithostratigraphic, C-14, and palynologic analyses of peat and silty peat at three nearby sites reveal a 25 000 year vegetation and climate history of the Olympia Interstade for the Fraser Lowland, British Columbia, 300 km within the southern limit of the Cordilleran Ice Sheet. At Lynn Valley, Polypodiaceae fern spores and nonarboreal pollen dominate >47.8 C-14 ka BP, reflecting unstable and cold landscapes. A Pinus-Poaceae zone follows, representing pine parkland and cool dry climate. Fluctuating values of Picea and Tsuga mertensiana pollen at Lynn and Seymour valleys and Port Moody characterize most of the Olympia Interstade during local peat deposition in Cyperaceae and Myrica wetlands until about 26.7 C-14 ka BP under a cool and moist climate. A brief Pinus - Tsuga heterophylla zone at Lynn Valley 44-39 C-14 ka BP suggests a climatic optimum. A Poaceae-Artemisia assemblage and deposition of silty sand after 26.7 C-14 ka BP reflect cooling and drying after which a unique Lycopodium assemblage at Lynn Valley suggests cold arid climate and Fraser Glaciation onset. These sequences have no progression to vegetation typical of warm, interglacial, Holocene-like climates, indicating an interstadial not an interglacial interval. Correlation with vegetation changes elsewhere in western North America suggests that the Olympia Interstade started about similar to 52 C-14 ka BP (similar to 57 cal ka BP) and ended about 26 C-14 ka BP (30 cal ka BP). |
format |
Article in Journal/Newspaper |
author |
Hebda, Richard J. Lian, Olav B. Hicock, Stephen R. |
author_facet |
Hebda, Richard J. Lian, Olav B. Hicock, Stephen R. |
author_sort |
Hebda, Richard J. |
title |
Olympia Interstadial: vegetation, landscape history, and paleoclimatic implications of a mid-Wisconsinan (MIS3) nonglacial sequence from southwest British Columbia, Canada |
title_short |
Olympia Interstadial: vegetation, landscape history, and paleoclimatic implications of a mid-Wisconsinan (MIS3) nonglacial sequence from southwest British Columbia, Canada |
title_full |
Olympia Interstadial: vegetation, landscape history, and paleoclimatic implications of a mid-Wisconsinan (MIS3) nonglacial sequence from southwest British Columbia, Canada |
title_fullStr |
Olympia Interstadial: vegetation, landscape history, and paleoclimatic implications of a mid-Wisconsinan (MIS3) nonglacial sequence from southwest British Columbia, Canada |
title_full_unstemmed |
Olympia Interstadial: vegetation, landscape history, and paleoclimatic implications of a mid-Wisconsinan (MIS3) nonglacial sequence from southwest British Columbia, Canada |
title_sort |
olympia interstadial: vegetation, landscape history, and paleoclimatic implications of a mid-wisconsinan (mis3) nonglacial sequence from southwest british columbia, canada |
publisher |
Canadian Science Publishing, Nrc Research Press |
publishDate |
2016 |
url |
https://archimer.ifremer.fr/doc/00421/53260/55128.pdf https://doi.org/10.1139/cjes-2015-0122 https://archimer.ifremer.fr/doc/00421/53260/ |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) ENVELOPE(-120.570,-120.570,55.917,55.917) ENVELOPE(-56.767,-56.767,-64.283,-64.283) |
geographic |
British Columbia Canada Parkland Seymour |
geographic_facet |
British Columbia Canada Parkland Seymour |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Canadian Journal Of Earth Sciences (0008-4077) (Canadian Science Publishing, Nrc Research Press), 2016-03 , Vol. 53 , N. 3 , P. 304-320 |
op_relation |
https://archimer.ifremer.fr/doc/00421/53260/55128.pdf doi:10.1139/cjes-2015-0122 https://archimer.ifremer.fr/doc/00421/53260/ |
op_rights |
2016, NRC Research Press or its licensors info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1139/cjes-2015-0122 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
53 |
container_issue |
3 |
container_start_page |
304 |
op_container_end_page |
320 |
_version_ |
1768388996263575552 |