Late-Glacial Environmental Changes South of the Wisconsinan Terminal Moraine in the Eastern United States
Abstract Palynological analyses of two sediment cores, one 2.4 m long from northern Delaware, dated about 16,300 to 14,700 14 C yr B.P., and one 1.8 m long from New Jersey just south of the Wisconsinan terminal moraine and dated about 13,600 to 12,500 14 C yr B.P., give the first detailed evidence o...
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2000
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crcambridgeupr:10.1006/qres.1999.2103 2024-06-09T07:50:01+00:00 Late-Glacial Environmental Changes South of the Wisconsinan Terminal Moraine in the Eastern United States Russell, Emily W.B. Stanford, Scott D. 2000 http://dx.doi.org/10.1006/qres.1999.2103 http://api.elsevier.com/content/article/PII:S0033589499921038?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589499921038?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400030568 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 53, issue 1, page 105-113 ISSN 0033-5894 1096-0287 journal-article 2000 crcambridgeupr https://doi.org/10.1006/qres.1999.2103 2024-05-15T13:03:24Z Abstract Palynological analyses of two sediment cores, one 2.4 m long from northern Delaware, dated about 16,300 to 14,700 14 C yr B.P., and one 1.8 m long from New Jersey just south of the Wisconsinan terminal moraine and dated about 13,600 to 12,500 14 C yr B.P., give the first detailed evidence of vegetation in this area during these periods. The overall assemblages are similar to each other, with Picea and Pinus dominating the arboreal pollen and Poaceae and Cyperaceae the herbaceous flora. Nonarboreal pollen contributes about 30–50% of the total, indicating a very open vegetation or a mix of forest patches and open areas. Especially in Delaware, there is a diversity of other herbaceous pollen, including members of the Asteraceae, Fabaceae, and Ranunculaceae. The assemblages do not resemble current North American tundra or boreal forest assemblages; rather, they resemble assemblages characteristic of tundra on recently exposed land surfaces north of the Wisconsinan terminal moraine. The persistence of the assemblages for 1500–2000 years in late-glacial time suggests stable and cold climate during this time of glacier retreat. Article in Journal/Newspaper Tundra Cambridge University Press Quaternary Research 53 1 105 113 |
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Open Polar |
collection |
Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Palynological analyses of two sediment cores, one 2.4 m long from northern Delaware, dated about 16,300 to 14,700 14 C yr B.P., and one 1.8 m long from New Jersey just south of the Wisconsinan terminal moraine and dated about 13,600 to 12,500 14 C yr B.P., give the first detailed evidence of vegetation in this area during these periods. The overall assemblages are similar to each other, with Picea and Pinus dominating the arboreal pollen and Poaceae and Cyperaceae the herbaceous flora. Nonarboreal pollen contributes about 30–50% of the total, indicating a very open vegetation or a mix of forest patches and open areas. Especially in Delaware, there is a diversity of other herbaceous pollen, including members of the Asteraceae, Fabaceae, and Ranunculaceae. The assemblages do not resemble current North American tundra or boreal forest assemblages; rather, they resemble assemblages characteristic of tundra on recently exposed land surfaces north of the Wisconsinan terminal moraine. The persistence of the assemblages for 1500–2000 years in late-glacial time suggests stable and cold climate during this time of glacier retreat. |
format |
Article in Journal/Newspaper |
author |
Russell, Emily W.B. Stanford, Scott D. |
spellingShingle |
Russell, Emily W.B. Stanford, Scott D. Late-Glacial Environmental Changes South of the Wisconsinan Terminal Moraine in the Eastern United States |
author_facet |
Russell, Emily W.B. Stanford, Scott D. |
author_sort |
Russell, Emily W.B. |
title |
Late-Glacial Environmental Changes South of the Wisconsinan Terminal Moraine in the Eastern United States |
title_short |
Late-Glacial Environmental Changes South of the Wisconsinan Terminal Moraine in the Eastern United States |
title_full |
Late-Glacial Environmental Changes South of the Wisconsinan Terminal Moraine in the Eastern United States |
title_fullStr |
Late-Glacial Environmental Changes South of the Wisconsinan Terminal Moraine in the Eastern United States |
title_full_unstemmed |
Late-Glacial Environmental Changes South of the Wisconsinan Terminal Moraine in the Eastern United States |
title_sort |
late-glacial environmental changes south of the wisconsinan terminal moraine in the eastern united states |
publisher |
Cambridge University Press (CUP) |
publishDate |
2000 |
url |
http://dx.doi.org/10.1006/qres.1999.2103 http://api.elsevier.com/content/article/PII:S0033589499921038?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589499921038?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400030568 |
genre |
Tundra |
genre_facet |
Tundra |
op_source |
Quaternary Research volume 53, issue 1, page 105-113 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1006/qres.1999.2103 |
container_title |
Quaternary Research |
container_volume |
53 |
container_issue |
1 |
container_start_page |
105 |
op_container_end_page |
113 |
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1801382989524893696 |