Stratigraphy and floristics of Eocene swamp forests from Axel Heiberg Island, Canadian Arctic Archipelago
A record of polar Eocene forests is preserved as in situ tree-stump fields and leaf-litter mats in Buchanan Lake Formation sediments on Axel Heiberg Island, in the Canadian Arctic Archipelago. Stratigraphic examination at the centimetre to metre scale of peat–coal lithology and macrofossil floristic...
Published in: | Canadian Journal of Earth Sciences |
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Language: | English |
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Canadian Science Publishing
1993
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Online Access: | http://dx.doi.org/10.1139/e93-169 http://www.nrcresearchpress.com/doi/pdf/10.1139/e93-169 |
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crcansciencepubl:10.1139/e93-169 2024-06-23T07:48:50+00:00 Stratigraphy and floristics of Eocene swamp forests from Axel Heiberg Island, Canadian Arctic Archipelago Greenwood, David R. Basinger, James F. 1993 http://dx.doi.org/10.1139/e93-169 http://www.nrcresearchpress.com/doi/pdf/10.1139/e93-169 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 30, issue 9, page 1914-1923 ISSN 0008-4077 1480-3313 journal-article 1993 crcansciencepubl https://doi.org/10.1139/e93-169 2024-06-13T04:10:51Z A record of polar Eocene forests is preserved as in situ tree-stump fields and leaf-litter mats in Buchanan Lake Formation sediments on Axel Heiberg Island, in the Canadian Arctic Archipelago. Stratigraphic examination at the centimetre to metre scale of peat–coal lithology and macrofossil floristics in two levels of these fossil forests reflects small-scale changes in forest composition and swamp hydrology horizontally and temporal variation vertically. Root system structure and tree base stratigraphy suggest that exposed tree stumps may not include only coeval individuals of a single forest stand, but rather also individuals representing different phases of the forest through one cycle of the hydrological development of this Eocene polar forest community. Earlier calculations of stand density and biomass, based upon the assumption that all stumps represent coeval trees, may therefore be greatly overestimated. A mosaic of Alnus – fern bog, mixed coniferous community, and taxodiaceous (Metasequoia–Glyptostrobus) swamp appears to have produced both the leaf mats and the in situ stumps, with the taxodiaceous swamp the dominant peat-accumulating phase. Article in Journal/Newspaper Arctic Archipelago Arctic Axel Heiberg Island Canadian Arctic Archipelago Canadian Science Publishing Arctic Axel Heiberg Island ENVELOPE(-91.001,-91.001,79.752,79.752) Canadian Arctic Archipelago Heiberg ENVELOPE(13.964,13.964,66.424,66.424) Stump ENVELOPE(-153.167,-153.167,-86.183,-86.183) Canadian Journal of Earth Sciences 30 9 1914 1923 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
A record of polar Eocene forests is preserved as in situ tree-stump fields and leaf-litter mats in Buchanan Lake Formation sediments on Axel Heiberg Island, in the Canadian Arctic Archipelago. Stratigraphic examination at the centimetre to metre scale of peat–coal lithology and macrofossil floristics in two levels of these fossil forests reflects small-scale changes in forest composition and swamp hydrology horizontally and temporal variation vertically. Root system structure and tree base stratigraphy suggest that exposed tree stumps may not include only coeval individuals of a single forest stand, but rather also individuals representing different phases of the forest through one cycle of the hydrological development of this Eocene polar forest community. Earlier calculations of stand density and biomass, based upon the assumption that all stumps represent coeval trees, may therefore be greatly overestimated. A mosaic of Alnus – fern bog, mixed coniferous community, and taxodiaceous (Metasequoia–Glyptostrobus) swamp appears to have produced both the leaf mats and the in situ stumps, with the taxodiaceous swamp the dominant peat-accumulating phase. |
format |
Article in Journal/Newspaper |
author |
Greenwood, David R. Basinger, James F. |
spellingShingle |
Greenwood, David R. Basinger, James F. Stratigraphy and floristics of Eocene swamp forests from Axel Heiberg Island, Canadian Arctic Archipelago |
author_facet |
Greenwood, David R. Basinger, James F. |
author_sort |
Greenwood, David R. |
title |
Stratigraphy and floristics of Eocene swamp forests from Axel Heiberg Island, Canadian Arctic Archipelago |
title_short |
Stratigraphy and floristics of Eocene swamp forests from Axel Heiberg Island, Canadian Arctic Archipelago |
title_full |
Stratigraphy and floristics of Eocene swamp forests from Axel Heiberg Island, Canadian Arctic Archipelago |
title_fullStr |
Stratigraphy and floristics of Eocene swamp forests from Axel Heiberg Island, Canadian Arctic Archipelago |
title_full_unstemmed |
Stratigraphy and floristics of Eocene swamp forests from Axel Heiberg Island, Canadian Arctic Archipelago |
title_sort |
stratigraphy and floristics of eocene swamp forests from axel heiberg island, canadian arctic archipelago |
publisher |
Canadian Science Publishing |
publishDate |
1993 |
url |
http://dx.doi.org/10.1139/e93-169 http://www.nrcresearchpress.com/doi/pdf/10.1139/e93-169 |
long_lat |
ENVELOPE(-91.001,-91.001,79.752,79.752) ENVELOPE(13.964,13.964,66.424,66.424) ENVELOPE(-153.167,-153.167,-86.183,-86.183) |
geographic |
Arctic Axel Heiberg Island Canadian Arctic Archipelago Heiberg Stump |
geographic_facet |
Arctic Axel Heiberg Island Canadian Arctic Archipelago Heiberg Stump |
genre |
Arctic Archipelago Arctic Axel Heiberg Island Canadian Arctic Archipelago |
genre_facet |
Arctic Archipelago Arctic Axel Heiberg Island Canadian Arctic Archipelago |
op_source |
Canadian Journal of Earth Sciences volume 30, issue 9, page 1914-1923 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e93-169 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
30 |
container_issue |
9 |
container_start_page |
1914 |
op_container_end_page |
1923 |
_version_ |
1802639174918995968 |