Late Pleistocene Vertebrates and Other Fossils from Epiguruk, Northwestern Alaska
Abstract Sediments exposed at Epiguruk, a large cutbank on the Kobuk River about 170 km inland from Kotzebue Sound, record multiple episodes of glacial-age alluviation followed by interstadial downcutting and formation of paleosols. Vertebrate remains from Epiguruk include mammoth, bison, caribou, a...
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Cambridge University Press (CUP)
1993
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crcambridgeupr:10.1006/qres.1993.1045 2024-06-09T07:42:48+00:00 Late Pleistocene Vertebrates and Other Fossils from Epiguruk, Northwestern Alaska Hamilton, Thomas D. Ashley, Gail M. Reed, Katherine M. Schweger, Charles E. 1993 http://dx.doi.org/10.1006/qres.1993.1045 http://api.elsevier.com/content/article/PII:S0033589483710458?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589483710458?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400034542 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 39, issue 3, page 381-389 ISSN 0033-5894 1096-0287 journal-article 1993 crcambridgeupr https://doi.org/10.1006/qres.1993.1045 2024-05-15T12:59:57Z Abstract Sediments exposed at Epiguruk, a large cutbank on the Kobuk River about 170 km inland from Kotzebue Sound, record multiple episodes of glacial-age alluviation followed by interstadial downcutting and formation of paleosols. Vertebrate remains from Epiguruk include mammoth, bison, caribou, an equid, a canid, arctic ground squirrel, lemmings, and voles. Radiocarbon ages of bone validated by concordant ages of peat and wood span the interval between about 37,000 and 14,000 yr B.P. The late Pleistocene pollen record is dominated by Cyperaceae, with Artemisia , Salix , Betula , and Gramineae also generally abundant. The fossil record from Epiguruk indicates that the Kobuk River valley supported tundra vegetation with abundant riparian willows during middle and late Wisconsin time. Large herbivores were present during the height of late Wisconsin glaciation as well as during its waning stage and the preceding interstadial interval. The Kobuk River valley would have been a favorable refugium for plants, animals, and possibly humans throughout the last glaciation. Article in Journal/Newspaper Arctic ground squirrel Arctic Tundra Alaska Cambridge University Press Arctic Quaternary Research 39 3 381 389 |
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Open Polar |
collection |
Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Sediments exposed at Epiguruk, a large cutbank on the Kobuk River about 170 km inland from Kotzebue Sound, record multiple episodes of glacial-age alluviation followed by interstadial downcutting and formation of paleosols. Vertebrate remains from Epiguruk include mammoth, bison, caribou, an equid, a canid, arctic ground squirrel, lemmings, and voles. Radiocarbon ages of bone validated by concordant ages of peat and wood span the interval between about 37,000 and 14,000 yr B.P. The late Pleistocene pollen record is dominated by Cyperaceae, with Artemisia , Salix , Betula , and Gramineae also generally abundant. The fossil record from Epiguruk indicates that the Kobuk River valley supported tundra vegetation with abundant riparian willows during middle and late Wisconsin time. Large herbivores were present during the height of late Wisconsin glaciation as well as during its waning stage and the preceding interstadial interval. The Kobuk River valley would have been a favorable refugium for plants, animals, and possibly humans throughout the last glaciation. |
format |
Article in Journal/Newspaper |
author |
Hamilton, Thomas D. Ashley, Gail M. Reed, Katherine M. Schweger, Charles E. |
spellingShingle |
Hamilton, Thomas D. Ashley, Gail M. Reed, Katherine M. Schweger, Charles E. Late Pleistocene Vertebrates and Other Fossils from Epiguruk, Northwestern Alaska |
author_facet |
Hamilton, Thomas D. Ashley, Gail M. Reed, Katherine M. Schweger, Charles E. |
author_sort |
Hamilton, Thomas D. |
title |
Late Pleistocene Vertebrates and Other Fossils from Epiguruk, Northwestern Alaska |
title_short |
Late Pleistocene Vertebrates and Other Fossils from Epiguruk, Northwestern Alaska |
title_full |
Late Pleistocene Vertebrates and Other Fossils from Epiguruk, Northwestern Alaska |
title_fullStr |
Late Pleistocene Vertebrates and Other Fossils from Epiguruk, Northwestern Alaska |
title_full_unstemmed |
Late Pleistocene Vertebrates and Other Fossils from Epiguruk, Northwestern Alaska |
title_sort |
late pleistocene vertebrates and other fossils from epiguruk, northwestern alaska |
publisher |
Cambridge University Press (CUP) |
publishDate |
1993 |
url |
http://dx.doi.org/10.1006/qres.1993.1045 http://api.elsevier.com/content/article/PII:S0033589483710458?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589483710458?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400034542 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic ground squirrel Arctic Tundra Alaska |
genre_facet |
Arctic ground squirrel Arctic Tundra Alaska |
op_source |
Quaternary Research volume 39, issue 3, page 381-389 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1006/qres.1993.1045 |
container_title |
Quaternary Research |
container_volume |
39 |
container_issue |
3 |
container_start_page |
381 |
op_container_end_page |
389 |
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1801371500176998400 |