An Anvilian (Early Pleistocene) Marine Fauna from Western Seward Peninsula, Alaska
Cover sediments of the York Terrace exposed near the California River, western Seward Peninsula, Alaska, yield mollusks, ostracodes, and foraminifera that lived during the Anvilian transgression of early Pleistocene age. The fossiliferous sediments lie at the inner edge of the York Terrace, a deform...
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Cambridge University Press (CUP)
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crcambridgeupr:10.1016/0033-5894(74)90039-8 2024-06-09T07:45:07+00:00 An Anvilian (Early Pleistocene) Marine Fauna from Western Seward Peninsula, Alaska Hopkins, D.M. Rowland, R.W. Echols, R.E. Valentine, P.C. 1974 http://dx.doi.org/10.1016/0033-5894(74)90039-8 http://api.elsevier.com/content/article/PII:0033589474900398?httpAccept=text/xml http://api.elsevier.com/content/article/PII:0033589474900398?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S003358940003129X en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 4, issue 4, page 441-470 ISSN 0033-5894 1096-0287 journal-article 1974 crcambridgeupr https://doi.org/10.1016/0033-5894(74)90039-8 2024-05-15T13:13:40Z Cover sediments of the York Terrace exposed near the California River, western Seward Peninsula, Alaska, yield mollusks, ostracodes, and foraminifera that lived during the Anvilian transgression of early Pleistocene age. The fossiliferous sediments lie at the inner edge of the York Terrace, a deformed wave-cut platform that extends eastward from Bering Strait along much of the southern coast of Seward Peninsula. The seaward margin is truncated by the little-deformed Lost River Terrace, carved during the Pelukian (Sangamonian) transgression. The early Pleistocene sediments seem to have been deposited between the first and second of four glaciations for which evidence can be found in the California River area. The California River fauna includes several extinct species and several species now confined to areas as remote as the northwestern Pacific and north Atlantic. The fauna probably lived in water temperatures much like those of the present time but deeper water on the Bering Shelf is suggested. The presence of an early Pleistocene fauna at the inner edge of the York Terrace at California River shows that the terrace was largely carved before and during early Pleistocene time. However, a marine fauna apparently of middle Pleistocene age is found on the York Terrace near Cassiterite Peak, and this seems to indicate that the terrace remained low until middle Pleistocene time. Uplift of the York Terrace probably was accompanied by uplift of Bering Strait. The strait may have been deeper, and there may have been no land bridge between the Seward Peninsula of Alaksa and the Chukotka Peninsula of Siberia during most of early and middle Pleistocene time. Article in Journal/Newspaper Bering Strait Chukotka Chukotka Peninsula North Atlantic Seward Peninsula Alaska Siberia Cambridge University Press Bering Shelf ENVELOPE(-170.783,-170.783,60.128,60.128) Bering Strait Lost River ENVELOPE(-56.673,-56.673,51.723,51.723) Pacific Quaternary Research 4 4 441 470 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Cover sediments of the York Terrace exposed near the California River, western Seward Peninsula, Alaska, yield mollusks, ostracodes, and foraminifera that lived during the Anvilian transgression of early Pleistocene age. The fossiliferous sediments lie at the inner edge of the York Terrace, a deformed wave-cut platform that extends eastward from Bering Strait along much of the southern coast of Seward Peninsula. The seaward margin is truncated by the little-deformed Lost River Terrace, carved during the Pelukian (Sangamonian) transgression. The early Pleistocene sediments seem to have been deposited between the first and second of four glaciations for which evidence can be found in the California River area. The California River fauna includes several extinct species and several species now confined to areas as remote as the northwestern Pacific and north Atlantic. The fauna probably lived in water temperatures much like those of the present time but deeper water on the Bering Shelf is suggested. The presence of an early Pleistocene fauna at the inner edge of the York Terrace at California River shows that the terrace was largely carved before and during early Pleistocene time. However, a marine fauna apparently of middle Pleistocene age is found on the York Terrace near Cassiterite Peak, and this seems to indicate that the terrace remained low until middle Pleistocene time. Uplift of the York Terrace probably was accompanied by uplift of Bering Strait. The strait may have been deeper, and there may have been no land bridge between the Seward Peninsula of Alaksa and the Chukotka Peninsula of Siberia during most of early and middle Pleistocene time. |
format |
Article in Journal/Newspaper |
author |
Hopkins, D.M. Rowland, R.W. Echols, R.E. Valentine, P.C. |
spellingShingle |
Hopkins, D.M. Rowland, R.W. Echols, R.E. Valentine, P.C. An Anvilian (Early Pleistocene) Marine Fauna from Western Seward Peninsula, Alaska |
author_facet |
Hopkins, D.M. Rowland, R.W. Echols, R.E. Valentine, P.C. |
author_sort |
Hopkins, D.M. |
title |
An Anvilian (Early Pleistocene) Marine Fauna from Western Seward Peninsula, Alaska |
title_short |
An Anvilian (Early Pleistocene) Marine Fauna from Western Seward Peninsula, Alaska |
title_full |
An Anvilian (Early Pleistocene) Marine Fauna from Western Seward Peninsula, Alaska |
title_fullStr |
An Anvilian (Early Pleistocene) Marine Fauna from Western Seward Peninsula, Alaska |
title_full_unstemmed |
An Anvilian (Early Pleistocene) Marine Fauna from Western Seward Peninsula, Alaska |
title_sort |
anvilian (early pleistocene) marine fauna from western seward peninsula, alaska |
publisher |
Cambridge University Press (CUP) |
publishDate |
1974 |
url |
http://dx.doi.org/10.1016/0033-5894(74)90039-8 http://api.elsevier.com/content/article/PII:0033589474900398?httpAccept=text/xml http://api.elsevier.com/content/article/PII:0033589474900398?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S003358940003129X |
long_lat |
ENVELOPE(-170.783,-170.783,60.128,60.128) ENVELOPE(-56.673,-56.673,51.723,51.723) |
geographic |
Bering Shelf Bering Strait Lost River Pacific |
geographic_facet |
Bering Shelf Bering Strait Lost River Pacific |
genre |
Bering Strait Chukotka Chukotka Peninsula North Atlantic Seward Peninsula Alaska Siberia |
genre_facet |
Bering Strait Chukotka Chukotka Peninsula North Atlantic Seward Peninsula Alaska Siberia |
op_source |
Quaternary Research volume 4, issue 4, page 441-470 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1016/0033-5894(74)90039-8 |
container_title |
Quaternary Research |
container_volume |
4 |
container_issue |
4 |
container_start_page |
441 |
op_container_end_page |
470 |
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1801374064276668416 |