High-elevation paleoenvironmental change during MIS 6–4 in the central Rockies of Colorado as determined from pollen analysis
Abstract Paleoecological studies from Rocky Mountain (USA) high elevations encompassing the previous interglacial (MIS 5e) are rare. The ~10-m composite profile from the Ziegler Reservoir fossil site (2705 m asl) of central Colorado allows us to determine paleoenvironments from Marine Oxygen Isotope...
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Cambridge University Press (CUP)
2014
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Online Access: | http://dx.doi.org/10.1016/j.yqres.2014.03.005 http://api.elsevier.com/content/article/PII:S0033589414000398?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589414000398?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400002490 |
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crcambridgeupr:10.1016/j.yqres.2014.03.005 2024-06-09T07:50:01+00:00 High-elevation paleoenvironmental change during MIS 6–4 in the central Rockies of Colorado as determined from pollen analysis Anderson, R. Scott Jiménez-Moreno, Gonzalo Ager, Thomas Porinchu, David F. Denver Museum of Nature and Science U.S. Geological Survey 2014 http://dx.doi.org/10.1016/j.yqres.2014.03.005 http://api.elsevier.com/content/article/PII:S0033589414000398?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589414000398?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400002490 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms http://www.elsevier.com/tdm/userlicense/1.0/ Quaternary Research volume 82, issue 3, page 542-552 ISSN 0033-5894 1096-0287 journal-article 2014 crcambridgeupr https://doi.org/10.1016/j.yqres.2014.03.005 2024-05-15T13:03:59Z Abstract Paleoecological studies from Rocky Mountain (USA) high elevations encompassing the previous interglacial (MIS 5e) are rare. The ~10-m composite profile from the Ziegler Reservoir fossil site (2705 m asl) of central Colorado allows us to determine paleoenvironments from Marine Oxygen Isotope Stages (MIS) 6– 4 using pollen zones that are approximately equivalent to marine oxygen isotope stages. During Pollen Zone (PZ) 6 time, pollen assemblages dominated by Artemisia (sagebrush) suggest that alpine tundra or steppe occurred nearby. The transition to PZ 5e was characterized by a rapid increase in tree pollen, initially Picea (spruce) and Pinus (pine) but also Quercus (oak) and Pseudotsuga menziesii (Douglas-fir). Non-arboreal pollen (NAP) types increased during PZ 5d, while Abies (fir) and Juniperus (juniper) increased during PZ 5c. Pollen evidence suggests that temperatures during PZ 5b were as cold as during PZ 6, with the site again surrounded by alpine tundra. Picea dominated during PZ 5a before the onset of cooler conditions during PZ 4. The MIS 6–MIS 5e transition here was similar to the MIS 2–MIS 1 transition at other Rocky Mountain sites. However, the Ziegler Reservoir pollen record contains evidence suggesting unexpected climatic trends at this site, including a warmer-than-expected MIS 5d and cooler-than-expected MIS 5b. Article in Journal/Newspaper Tundra Cambridge University Press Quaternary Research 82 3 542 552 |
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Cambridge University Press |
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crcambridgeupr |
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English |
description |
Abstract Paleoecological studies from Rocky Mountain (USA) high elevations encompassing the previous interglacial (MIS 5e) are rare. The ~10-m composite profile from the Ziegler Reservoir fossil site (2705 m asl) of central Colorado allows us to determine paleoenvironments from Marine Oxygen Isotope Stages (MIS) 6– 4 using pollen zones that are approximately equivalent to marine oxygen isotope stages. During Pollen Zone (PZ) 6 time, pollen assemblages dominated by Artemisia (sagebrush) suggest that alpine tundra or steppe occurred nearby. The transition to PZ 5e was characterized by a rapid increase in tree pollen, initially Picea (spruce) and Pinus (pine) but also Quercus (oak) and Pseudotsuga menziesii (Douglas-fir). Non-arboreal pollen (NAP) types increased during PZ 5d, while Abies (fir) and Juniperus (juniper) increased during PZ 5c. Pollen evidence suggests that temperatures during PZ 5b were as cold as during PZ 6, with the site again surrounded by alpine tundra. Picea dominated during PZ 5a before the onset of cooler conditions during PZ 4. The MIS 6–MIS 5e transition here was similar to the MIS 2–MIS 1 transition at other Rocky Mountain sites. However, the Ziegler Reservoir pollen record contains evidence suggesting unexpected climatic trends at this site, including a warmer-than-expected MIS 5d and cooler-than-expected MIS 5b. |
author2 |
Denver Museum of Nature and Science U.S. Geological Survey |
format |
Article in Journal/Newspaper |
author |
Anderson, R. Scott Jiménez-Moreno, Gonzalo Ager, Thomas Porinchu, David F. |
spellingShingle |
Anderson, R. Scott Jiménez-Moreno, Gonzalo Ager, Thomas Porinchu, David F. High-elevation paleoenvironmental change during MIS 6–4 in the central Rockies of Colorado as determined from pollen analysis |
author_facet |
Anderson, R. Scott Jiménez-Moreno, Gonzalo Ager, Thomas Porinchu, David F. |
author_sort |
Anderson, R. Scott |
title |
High-elevation paleoenvironmental change during MIS 6–4 in the central Rockies of Colorado as determined from pollen analysis |
title_short |
High-elevation paleoenvironmental change during MIS 6–4 in the central Rockies of Colorado as determined from pollen analysis |
title_full |
High-elevation paleoenvironmental change during MIS 6–4 in the central Rockies of Colorado as determined from pollen analysis |
title_fullStr |
High-elevation paleoenvironmental change during MIS 6–4 in the central Rockies of Colorado as determined from pollen analysis |
title_full_unstemmed |
High-elevation paleoenvironmental change during MIS 6–4 in the central Rockies of Colorado as determined from pollen analysis |
title_sort |
high-elevation paleoenvironmental change during mis 6–4 in the central rockies of colorado as determined from pollen analysis |
publisher |
Cambridge University Press (CUP) |
publishDate |
2014 |
url |
http://dx.doi.org/10.1016/j.yqres.2014.03.005 http://api.elsevier.com/content/article/PII:S0033589414000398?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589414000398?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400002490 |
genre |
Tundra |
genre_facet |
Tundra |
op_source |
Quaternary Research volume 82, issue 3, page 542-552 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms http://www.elsevier.com/tdm/userlicense/1.0/ |
op_doi |
https://doi.org/10.1016/j.yqres.2014.03.005 |
container_title |
Quaternary Research |
container_volume |
82 |
container_issue |
3 |
container_start_page |
542 |
op_container_end_page |
552 |
_version_ |
1801382993199104000 |