Evidence of climatic change from oxygen and carbon isotope variations in sediments of a small arctic lake, Canada
Abstract Radiocarbon dating of the organic‐rich sediments of Lake Illisarvik in the outer Mackenzie Delta indicates that formation of the lake occurred approximately 9500yr BP, with maximum expansion around 6000 yr BP. Sedimentation rates have remained relatively constant at an average of 0.3mm/yr....
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crwiley:10.1002/jqs.3390040302 2024-06-02T08:02:08+00:00 Evidence of climatic change from oxygen and carbon isotope variations in sediments of a small arctic lake, Canada Michel, F. A. Fritz, P. Drimmie, R. J. 1989 http://dx.doi.org/10.1002/jqs.3390040302 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.3390040302 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.3390040302 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 4, issue 3, page 201-209 ISSN 0267-8179 1099-1417 journal-article 1989 crwiley https://doi.org/10.1002/jqs.3390040302 2024-05-03T11:15:26Z Abstract Radiocarbon dating of the organic‐rich sediments of Lake Illisarvik in the outer Mackenzie Delta indicates that formation of the lake occurred approximately 9500yr BP, with maximum expansion around 6000 yr BP. Sedimentation rates have remained relatively constant at an average of 0.3mm/yr. 13 C results on biogenic and inorganic carbonates and organics indicate a change from dominantly terrestrial organics (−27 to −28% 0 ) to submerged aquatic vegetation or plankton (−18 to −23% 0 ) upon formation of the lake (9500yr BP), and a dramatic return to dominantly terrestrial organics at 5800yr BP (δ 13 C = −27 to −30% 0 ). This latter shift is accompanied by a drastic reduction in the macroflora and fauna populations. 18 O results suggest that a warmer climate than today existed prior to the shift at 5800yr BP. Article in Journal/Newspaper Arctic Mackenzie Delta Wiley Online Library Arctic Arctic Lake ENVELOPE(-130.826,-130.826,57.231,57.231) Canada Mackenzie Delta ENVELOPE(-136.672,-136.672,68.833,68.833) Journal of Quaternary Science 4 3 201 209 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Radiocarbon dating of the organic‐rich sediments of Lake Illisarvik in the outer Mackenzie Delta indicates that formation of the lake occurred approximately 9500yr BP, with maximum expansion around 6000 yr BP. Sedimentation rates have remained relatively constant at an average of 0.3mm/yr. 13 C results on biogenic and inorganic carbonates and organics indicate a change from dominantly terrestrial organics (−27 to −28% 0 ) to submerged aquatic vegetation or plankton (−18 to −23% 0 ) upon formation of the lake (9500yr BP), and a dramatic return to dominantly terrestrial organics at 5800yr BP (δ 13 C = −27 to −30% 0 ). This latter shift is accompanied by a drastic reduction in the macroflora and fauna populations. 18 O results suggest that a warmer climate than today existed prior to the shift at 5800yr BP. |
format |
Article in Journal/Newspaper |
author |
Michel, F. A. Fritz, P. Drimmie, R. J. |
spellingShingle |
Michel, F. A. Fritz, P. Drimmie, R. J. Evidence of climatic change from oxygen and carbon isotope variations in sediments of a small arctic lake, Canada |
author_facet |
Michel, F. A. Fritz, P. Drimmie, R. J. |
author_sort |
Michel, F. A. |
title |
Evidence of climatic change from oxygen and carbon isotope variations in sediments of a small arctic lake, Canada |
title_short |
Evidence of climatic change from oxygen and carbon isotope variations in sediments of a small arctic lake, Canada |
title_full |
Evidence of climatic change from oxygen and carbon isotope variations in sediments of a small arctic lake, Canada |
title_fullStr |
Evidence of climatic change from oxygen and carbon isotope variations in sediments of a small arctic lake, Canada |
title_full_unstemmed |
Evidence of climatic change from oxygen and carbon isotope variations in sediments of a small arctic lake, Canada |
title_sort |
evidence of climatic change from oxygen and carbon isotope variations in sediments of a small arctic lake, canada |
publisher |
Wiley |
publishDate |
1989 |
url |
http://dx.doi.org/10.1002/jqs.3390040302 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.3390040302 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.3390040302 |
long_lat |
ENVELOPE(-130.826,-130.826,57.231,57.231) ENVELOPE(-136.672,-136.672,68.833,68.833) |
geographic |
Arctic Arctic Lake Canada Mackenzie Delta |
geographic_facet |
Arctic Arctic Lake Canada Mackenzie Delta |
genre |
Arctic Mackenzie Delta |
genre_facet |
Arctic Mackenzie Delta |
op_source |
Journal of Quaternary Science volume 4, issue 3, page 201-209 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.3390040302 |
container_title |
Journal of Quaternary Science |
container_volume |
4 |
container_issue |
3 |
container_start_page |
201 |
op_container_end_page |
209 |
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1800746626139029504 |