Interstadial Proboscidean from South-Central Alaska: Implications for Biogeography, Geology, and Archeology
Abstract In 1980 a large proboscidean femur, probably Mammuthus sp., was found in situ in a bluff exposure at the mouth of the Tyone River in the northwestern part of the Copper River Basin, Alaska. The regional setting, stratigraphy, radiocarbon chronology, flora, and implications of the fossil loc...
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Cambridge University Press (CUP)
1981
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crcambridgeupr:10.1016/0033-5894(81)90019-3 2024-06-09T07:37:56+00:00 Interstadial Proboscidean from South-Central Alaska: Implications for Biogeography, Geology, and Archeology Thorson, Robert M. Dixon, E. James Smith, George S. Batten, Alan R. 1981 http://dx.doi.org/10.1016/0033-5894(81)90019-3 http://api.elsevier.com/content/article/PII:0033589481900193?httpAccept=text/xml http://api.elsevier.com/content/article/PII:0033589481900193?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400021876 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 16, issue 3, page 404-417 ISSN 0033-5894 1096-0287 journal-article 1981 crcambridgeupr https://doi.org/10.1016/0033-5894(81)90019-3 2024-05-15T13:09:11Z Abstract In 1980 a large proboscidean femur, probably Mammuthus sp., was found in situ in a bluff exposure at the mouth of the Tyone River in the northwestern part of the Copper River Basin, Alaska. The regional setting, stratigraphy, radiocarbon chronology, flora, and implications of the fossil locality, which represents the first documented occurrence of Pleistocene terrestrial mammalian fauna in southern Alaska, are described. Radiocarbon dates and stratigraphic relations at the site indicate that the sediments containing the fossil accumulated during the transition from interstadial to glacial conditions during terminal middle Wisconsin time. During this interval the immediate vicinity was unforested and large areas of south-central Alaska may have been available for faunal and possibly human habitation. This documented find, dated at 29,450 ± 610 14 C yr B.P., extends the known range for Pleistocene mammals and possibly steppe-tundra conditions south-ward at least 150 km, and suggests that mountain passes through the Alaska Range to the north were ice free during the last part of the middle Wisconsin interstadial. Article in Journal/Newspaper alaska range Tundra Alaska Cambridge University Press Quaternary Research 16 3 404 417 |
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Open Polar |
collection |
Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract In 1980 a large proboscidean femur, probably Mammuthus sp., was found in situ in a bluff exposure at the mouth of the Tyone River in the northwestern part of the Copper River Basin, Alaska. The regional setting, stratigraphy, radiocarbon chronology, flora, and implications of the fossil locality, which represents the first documented occurrence of Pleistocene terrestrial mammalian fauna in southern Alaska, are described. Radiocarbon dates and stratigraphic relations at the site indicate that the sediments containing the fossil accumulated during the transition from interstadial to glacial conditions during terminal middle Wisconsin time. During this interval the immediate vicinity was unforested and large areas of south-central Alaska may have been available for faunal and possibly human habitation. This documented find, dated at 29,450 ± 610 14 C yr B.P., extends the known range for Pleistocene mammals and possibly steppe-tundra conditions south-ward at least 150 km, and suggests that mountain passes through the Alaska Range to the north were ice free during the last part of the middle Wisconsin interstadial. |
format |
Article in Journal/Newspaper |
author |
Thorson, Robert M. Dixon, E. James Smith, George S. Batten, Alan R. |
spellingShingle |
Thorson, Robert M. Dixon, E. James Smith, George S. Batten, Alan R. Interstadial Proboscidean from South-Central Alaska: Implications for Biogeography, Geology, and Archeology |
author_facet |
Thorson, Robert M. Dixon, E. James Smith, George S. Batten, Alan R. |
author_sort |
Thorson, Robert M. |
title |
Interstadial Proboscidean from South-Central Alaska: Implications for Biogeography, Geology, and Archeology |
title_short |
Interstadial Proboscidean from South-Central Alaska: Implications for Biogeography, Geology, and Archeology |
title_full |
Interstadial Proboscidean from South-Central Alaska: Implications for Biogeography, Geology, and Archeology |
title_fullStr |
Interstadial Proboscidean from South-Central Alaska: Implications for Biogeography, Geology, and Archeology |
title_full_unstemmed |
Interstadial Proboscidean from South-Central Alaska: Implications for Biogeography, Geology, and Archeology |
title_sort |
interstadial proboscidean from south-central alaska: implications for biogeography, geology, and archeology |
publisher |
Cambridge University Press (CUP) |
publishDate |
1981 |
url |
http://dx.doi.org/10.1016/0033-5894(81)90019-3 http://api.elsevier.com/content/article/PII:0033589481900193?httpAccept=text/xml http://api.elsevier.com/content/article/PII:0033589481900193?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400021876 |
genre |
alaska range Tundra Alaska |
genre_facet |
alaska range Tundra Alaska |
op_source |
Quaternary Research volume 16, issue 3, page 404-417 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1016/0033-5894(81)90019-3 |
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Quaternary Research |
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16 |
container_issue |
3 |
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404 |
op_container_end_page |
417 |
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1801381954078113792 |