Origin of Ice Ages: Pollen Evidence from Arctic Alaska
Pollen analysis of radiocarbon-dated samples from the arctic coastal plain of Alaska shows that vegetation of 14,000 years ago reflected a climate colder than the present, and that there has been a progressive warming, culminating in the present cold arctic climate. The record indicates that the Arc...
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American Association for the Advancement of Science (AAAS)
1964
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Online Access: | http://dx.doi.org/10.1126/science.145.3633.707 https://www.science.org/doi/pdf/10.1126/science.145.3633.707 |
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craaas:10.1126/science.145.3633.707 2024-06-09T07:42:50+00:00 Origin of Ice Ages: Pollen Evidence from Arctic Alaska Colinvaux, Paul A. 1964 http://dx.doi.org/10.1126/science.145.3633.707 https://www.science.org/doi/pdf/10.1126/science.145.3633.707 en eng American Association for the Advancement of Science (AAAS) Science volume 145, issue 3633, page 707-708 ISSN 0036-8075 1095-9203 journal-article 1964 craaas https://doi.org/10.1126/science.145.3633.707 2024-05-16T12:54:28Z Pollen analysis of radiocarbon-dated samples from the arctic coastal plain of Alaska shows that vegetation of 14,000 years ago reflected a climate colder than the present, and that there has been a progressive warming, culminating in the present cold arctic climate. The record indicates that the Arctic Ocean has been covered with ice since the time of the Wisconsin glacial maximum, suggesting that the essential condition of the Ewing and Donn hypothesis for the origin of ice ages, that the Arctic Ocean be ice-free up to 11,000 years ago, cannot be met. Article in Journal/Newspaper Arctic Arctic Ocean Alaska AAAS Resource Center (American Association for the Advancement of Science) Arctic Arctic Ocean Ewing ENVELOPE(-61.257,-61.257,-69.924,-69.924) Science 145 3633 707 708 |
institution |
Open Polar |
collection |
AAAS Resource Center (American Association for the Advancement of Science) |
op_collection_id |
craaas |
language |
English |
description |
Pollen analysis of radiocarbon-dated samples from the arctic coastal plain of Alaska shows that vegetation of 14,000 years ago reflected a climate colder than the present, and that there has been a progressive warming, culminating in the present cold arctic climate. The record indicates that the Arctic Ocean has been covered with ice since the time of the Wisconsin glacial maximum, suggesting that the essential condition of the Ewing and Donn hypothesis for the origin of ice ages, that the Arctic Ocean be ice-free up to 11,000 years ago, cannot be met. |
format |
Article in Journal/Newspaper |
author |
Colinvaux, Paul A. |
spellingShingle |
Colinvaux, Paul A. Origin of Ice Ages: Pollen Evidence from Arctic Alaska |
author_facet |
Colinvaux, Paul A. |
author_sort |
Colinvaux, Paul A. |
title |
Origin of Ice Ages: Pollen Evidence from Arctic Alaska |
title_short |
Origin of Ice Ages: Pollen Evidence from Arctic Alaska |
title_full |
Origin of Ice Ages: Pollen Evidence from Arctic Alaska |
title_fullStr |
Origin of Ice Ages: Pollen Evidence from Arctic Alaska |
title_full_unstemmed |
Origin of Ice Ages: Pollen Evidence from Arctic Alaska |
title_sort |
origin of ice ages: pollen evidence from arctic alaska |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
1964 |
url |
http://dx.doi.org/10.1126/science.145.3633.707 https://www.science.org/doi/pdf/10.1126/science.145.3633.707 |
long_lat |
ENVELOPE(-61.257,-61.257,-69.924,-69.924) |
geographic |
Arctic Arctic Ocean Ewing |
geographic_facet |
Arctic Arctic Ocean Ewing |
genre |
Arctic Arctic Ocean Alaska |
genre_facet |
Arctic Arctic Ocean Alaska |
op_source |
Science volume 145, issue 3633, page 707-708 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.145.3633.707 |
container_title |
Science |
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145 |
container_issue |
3633 |
container_start_page |
707 |
op_container_end_page |
708 |
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1801371536761815040 |