Recent Glacial History of an Alpine Area in the Colorado Front Range, U.S.A.: II. Dating the Glacial Deposits
Abstract Recent glacial deposits in the Indian Peaks area of the Colorado Front Range have been dated lichenometricaily, using a growth curve developed locally for Rhizocarpon geographicum . Radiocarbon dates, where available, tend to support the lichen chronology. Three distinct intervals of glacia...
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Cambridge University Press (CUP)
1968
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Online Access: | http://dx.doi.org/10.1017/s0022143000020414 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000020414 |
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crcambridgeupr:10.1017/s0022143000020414 2024-10-13T14:08:39+00:00 Recent Glacial History of an Alpine Area in the Colorado Front Range, U.S.A.: II. Dating the Glacial Deposits Benedict, James B. 1968 http://dx.doi.org/10.1017/s0022143000020414 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000020414 en eng Cambridge University Press (CUP) Journal of Glaciology volume 7, issue 49, page 77-87 ISSN 0022-1430 1727-5652 journal-article 1968 crcambridgeupr https://doi.org/10.1017/s0022143000020414 2024-09-25T04:03:22Z Abstract Recent glacial deposits in the Indian Peaks area of the Colorado Front Range have been dated lichenometricaily, using a growth curve developed locally for Rhizocarpon geographicum . Radiocarbon dates, where available, tend to support the lichen chronology. Three distinct intervals of glaciation, each consisting of several minor pulsations, have occurred in the area during the past 4500 years. The earliest advance (Temple Lake Stade) is dated at 2500–700 b.c. A later advance (Arikaree Stade) began in about a.d. 100 and ended in a.d. 1000. The most recent advance (Gannett Peak Stade) is dated at a.d. 1650–1850. It remains to be seen whether the Arikaree Stade was purely a local development or whether glaciers were advancing elsewhere in the cordilleran region during this interval. Alluviation on the plains east of the Colorado Front Range seems to have occurred during the waning stages of mountain glaciation. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Indian Journal of Glaciology 7 49 77 87 |
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Cambridge University Press |
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English |
description |
Abstract Recent glacial deposits in the Indian Peaks area of the Colorado Front Range have been dated lichenometricaily, using a growth curve developed locally for Rhizocarpon geographicum . Radiocarbon dates, where available, tend to support the lichen chronology. Three distinct intervals of glaciation, each consisting of several minor pulsations, have occurred in the area during the past 4500 years. The earliest advance (Temple Lake Stade) is dated at 2500–700 b.c. A later advance (Arikaree Stade) began in about a.d. 100 and ended in a.d. 1000. The most recent advance (Gannett Peak Stade) is dated at a.d. 1650–1850. It remains to be seen whether the Arikaree Stade was purely a local development or whether glaciers were advancing elsewhere in the cordilleran region during this interval. Alluviation on the plains east of the Colorado Front Range seems to have occurred during the waning stages of mountain glaciation. |
format |
Article in Journal/Newspaper |
author |
Benedict, James B. |
spellingShingle |
Benedict, James B. Recent Glacial History of an Alpine Area in the Colorado Front Range, U.S.A.: II. Dating the Glacial Deposits |
author_facet |
Benedict, James B. |
author_sort |
Benedict, James B. |
title |
Recent Glacial History of an Alpine Area in the Colorado Front Range, U.S.A.: II. Dating the Glacial Deposits |
title_short |
Recent Glacial History of an Alpine Area in the Colorado Front Range, U.S.A.: II. Dating the Glacial Deposits |
title_full |
Recent Glacial History of an Alpine Area in the Colorado Front Range, U.S.A.: II. Dating the Glacial Deposits |
title_fullStr |
Recent Glacial History of an Alpine Area in the Colorado Front Range, U.S.A.: II. Dating the Glacial Deposits |
title_full_unstemmed |
Recent Glacial History of an Alpine Area in the Colorado Front Range, U.S.A.: II. Dating the Glacial Deposits |
title_sort |
recent glacial history of an alpine area in the colorado front range, u.s.a.: ii. dating the glacial deposits |
publisher |
Cambridge University Press (CUP) |
publishDate |
1968 |
url |
http://dx.doi.org/10.1017/s0022143000020414 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000020414 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 7, issue 49, page 77-87 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000020414 |
container_title |
Journal of Glaciology |
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7 |
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49 |
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77 |
op_container_end_page |
87 |
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1812815373509066752 |