Pollen analyses of tills from SE-Finland
Various Quaternary till deposits in southeastern Finland were subjected to pollen analysis. Two profiles of varved clay were included for comparison. Betula is dominant in the majority of the arboreal pollen spectra whereas the uppermost part of the sections are often dominated by Pinns. Together wi...
Published in: | Bulletin of the Geological Society of Finland |
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Geological Society of Finland
1973
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Online Access: | https://doi.org/10.17741/bgsf/45.2.009 https://doaj.org/article/fba3ec4fdf6e43d1a3008b72d938f5d4 |
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ftdoajarticles:oai:doaj.org/article:fba3ec4fdf6e43d1a3008b72d938f5d4 2023-05-15T16:41:04+02:00 Pollen analyses of tills from SE-Finland R. Repo 1973-12-01T00:00:00Z https://doi.org/10.17741/bgsf/45.2.009 https://doaj.org/article/fba3ec4fdf6e43d1a3008b72d938f5d4 EN eng Geological Society of Finland http://www.geologinenseura.fi/bulletin/Volume45/sgs_bt_045_2_pages_181_203.pdf https://doaj.org/toc/0367-5211 https://doaj.org/toc/1799-4632 doi:10.17741/bgsf/45.2.009 0367-5211 1799-4632 https://doaj.org/article/fba3ec4fdf6e43d1a3008b72d938f5d4 Bulletin of the Geological Society of Finland, Vol 45, Iss 2, Pp 181-203 (1973) Geology QE1-996.5 article 1973 ftdoajarticles https://doi.org/10.17741/bgsf/45.2.009 2022-12-31T13:48:39Z Various Quaternary till deposits in southeastern Finland were subjected to pollen analysis. Two profiles of varved clay were included for comparison. Betula is dominant in the majority of the arboreal pollen spectra whereas the uppermost part of the sections are often dominated by Pinns. Together with the arboreal pollen the NAP indicate the climatic conditions that prevailed during the continental glaciation. Winds from southern and southeastern Russia and southwestern Europe transported rather abundant pollen from the steppe regions onto the ice-sheet (e.g. Artemisia, Chenopodiaceae). Winds from the tundra region surrounding the icc sheet were responsible for the more northern species (e.g. Dryas, many Ericales, Gramineae and Cyperaceae species). Those pollen grains that could only be identified as to family or genus (e.g. Ranunculaceae, Rosaceae, Rumex and also many spores) may contain species that may just as well be typical of the tundra or the southern parts of Fenno-Scandinavia or even species with a widespread distribution. Even at its best the pollen spectra can only give a general view of the vegetational conditions that could have prevailed during the glaciation. The bulk of the pollen flora seems to reflect the climatic conditions during the Würm stage and especially during its latter part. The severely eroded pollen grains observed in the analyses might be referable to the last interglacial. Article in Journal/Newspaper Ice Sheet Tundra Directory of Open Access Journals: DOAJ Articles Bulletin of the Geological Society of Finland 45 2 181 203 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Geology QE1-996.5 |
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Geology QE1-996.5 R. Repo Pollen analyses of tills from SE-Finland |
topic_facet |
Geology QE1-996.5 |
description |
Various Quaternary till deposits in southeastern Finland were subjected to pollen analysis. Two profiles of varved clay were included for comparison. Betula is dominant in the majority of the arboreal pollen spectra whereas the uppermost part of the sections are often dominated by Pinns. Together with the arboreal pollen the NAP indicate the climatic conditions that prevailed during the continental glaciation. Winds from southern and southeastern Russia and southwestern Europe transported rather abundant pollen from the steppe regions onto the ice-sheet (e.g. Artemisia, Chenopodiaceae). Winds from the tundra region surrounding the icc sheet were responsible for the more northern species (e.g. Dryas, many Ericales, Gramineae and Cyperaceae species). Those pollen grains that could only be identified as to family or genus (e.g. Ranunculaceae, Rosaceae, Rumex and also many spores) may contain species that may just as well be typical of the tundra or the southern parts of Fenno-Scandinavia or even species with a widespread distribution. Even at its best the pollen spectra can only give a general view of the vegetational conditions that could have prevailed during the glaciation. The bulk of the pollen flora seems to reflect the climatic conditions during the Würm stage and especially during its latter part. The severely eroded pollen grains observed in the analyses might be referable to the last interglacial. |
format |
Article in Journal/Newspaper |
author |
R. Repo |
author_facet |
R. Repo |
author_sort |
R. Repo |
title |
Pollen analyses of tills from SE-Finland |
title_short |
Pollen analyses of tills from SE-Finland |
title_full |
Pollen analyses of tills from SE-Finland |
title_fullStr |
Pollen analyses of tills from SE-Finland |
title_full_unstemmed |
Pollen analyses of tills from SE-Finland |
title_sort |
pollen analyses of tills from se-finland |
publisher |
Geological Society of Finland |
publishDate |
1973 |
url |
https://doi.org/10.17741/bgsf/45.2.009 https://doaj.org/article/fba3ec4fdf6e43d1a3008b72d938f5d4 |
genre |
Ice Sheet Tundra |
genre_facet |
Ice Sheet Tundra |
op_source |
Bulletin of the Geological Society of Finland, Vol 45, Iss 2, Pp 181-203 (1973) |
op_relation |
http://www.geologinenseura.fi/bulletin/Volume45/sgs_bt_045_2_pages_181_203.pdf https://doaj.org/toc/0367-5211 https://doaj.org/toc/1799-4632 doi:10.17741/bgsf/45.2.009 0367-5211 1799-4632 https://doaj.org/article/fba3ec4fdf6e43d1a3008b72d938f5d4 |
op_doi |
https://doi.org/10.17741/bgsf/45.2.009 |
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Bulletin of the Geological Society of Finland |
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45 |
container_issue |
2 |
container_start_page |
181 |
op_container_end_page |
203 |
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1766031500156862464 |