CLIMATE IN THE GREAT LAKES REGION BETWEEN 14,000 AND 4000 YEARS AGO FROM ISOTOPIC COMPOSITION OF CONIFER WOOD
The isotopic composition of ancient wood has the potential to provide information about past environments. We analyzed the d13C, d18O, and d2H of cellulose of conifer trees from several cross-sections at each of 9 sites around the Great Lakes region ranging from ~4000 to 14,000 cal BP. Isotopic valu...
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Radiocarbon
2006
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ftunivarizonaojs:oai:journals.uair.arizona.edu:article/2863 2023-05-15T16:41:01+02:00 CLIMATE IN THE GREAT LAKES REGION BETWEEN 14,000 AND 4000 YEARS AGO FROM ISOTOPIC COMPOSITION OF CONIFER WOOD Leavitt, Steven W Panyushkina, Irina P Lange, Todd Wiedenhoeft, Alex Cheng, Li Hunter, R Douglas Hughes, John Pranschke, Frank Schneider, Allan F Moran, Joseph Stieglitz, Ron 2006-01-01 application/pdf https://journals.uair.arizona.edu/index.php/radiocarbon/article/view/2863 eng eng Radiocarbon https://journals.uair.arizona.edu/index.php/radiocarbon/article/view/2863/2626 https://journals.uair.arizona.edu/index.php/radiocarbon/article/view/2863 Radiocarbon; Vol 48, No 2 (2006); 205-217 0033-8222 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 2006 ftunivarizonaojs 2020-11-14T17:53:01Z The isotopic composition of ancient wood has the potential to provide information about past environments. We analyzed the d13C, d18O, and d2H of cellulose of conifer trees from several cross-sections at each of 9 sites around the Great Lakes region ranging from ~4000 to 14,000 cal BP. Isotopic values of Picea, Pinus, and Thuja species seem interchangeable for d18O and d2H comparisons, but Thuja appears distinctly different from the other 2 in its d13C composition. Isotopic results suggest that the 2 sites of near-Younger Dryas age experienced the coldest conditions, although the Gribben Basin site near the Laurentide ice sheet was relatively dry, whereas the Liverpool site 500 km south was moister. The spatial isotopic variability of 3 of the 4 sites of Two Creeks age shows evidence of an elevation effect, perhaps related to sites farther inland from the Lake Michigan shoreline experiencing warmer daytime growing season temperatures. Thus, despite floristic similarity across sites (wood samples at 7 of the sites being Picea), the isotopes appear to reflect environmental differences that might not be readily evident from a purely floristic interpretation of macrofossil or pollen identification. Article in Journal/Newspaper Ice Sheet Journals at the University of Arizona |
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Open Polar |
collection |
Journals at the University of Arizona |
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ftunivarizonaojs |
language |
English |
description |
The isotopic composition of ancient wood has the potential to provide information about past environments. We analyzed the d13C, d18O, and d2H of cellulose of conifer trees from several cross-sections at each of 9 sites around the Great Lakes region ranging from ~4000 to 14,000 cal BP. Isotopic values of Picea, Pinus, and Thuja species seem interchangeable for d18O and d2H comparisons, but Thuja appears distinctly different from the other 2 in its d13C composition. Isotopic results suggest that the 2 sites of near-Younger Dryas age experienced the coldest conditions, although the Gribben Basin site near the Laurentide ice sheet was relatively dry, whereas the Liverpool site 500 km south was moister. The spatial isotopic variability of 3 of the 4 sites of Two Creeks age shows evidence of an elevation effect, perhaps related to sites farther inland from the Lake Michigan shoreline experiencing warmer daytime growing season temperatures. Thus, despite floristic similarity across sites (wood samples at 7 of the sites being Picea), the isotopes appear to reflect environmental differences that might not be readily evident from a purely floristic interpretation of macrofossil or pollen identification. |
format |
Article in Journal/Newspaper |
author |
Leavitt, Steven W Panyushkina, Irina P Lange, Todd Wiedenhoeft, Alex Cheng, Li Hunter, R Douglas Hughes, John Pranschke, Frank Schneider, Allan F Moran, Joseph Stieglitz, Ron |
spellingShingle |
Leavitt, Steven W Panyushkina, Irina P Lange, Todd Wiedenhoeft, Alex Cheng, Li Hunter, R Douglas Hughes, John Pranschke, Frank Schneider, Allan F Moran, Joseph Stieglitz, Ron CLIMATE IN THE GREAT LAKES REGION BETWEEN 14,000 AND 4000 YEARS AGO FROM ISOTOPIC COMPOSITION OF CONIFER WOOD |
author_facet |
Leavitt, Steven W Panyushkina, Irina P Lange, Todd Wiedenhoeft, Alex Cheng, Li Hunter, R Douglas Hughes, John Pranschke, Frank Schneider, Allan F Moran, Joseph Stieglitz, Ron |
author_sort |
Leavitt, Steven W |
title |
CLIMATE IN THE GREAT LAKES REGION BETWEEN 14,000 AND 4000 YEARS AGO FROM ISOTOPIC COMPOSITION OF CONIFER WOOD |
title_short |
CLIMATE IN THE GREAT LAKES REGION BETWEEN 14,000 AND 4000 YEARS AGO FROM ISOTOPIC COMPOSITION OF CONIFER WOOD |
title_full |
CLIMATE IN THE GREAT LAKES REGION BETWEEN 14,000 AND 4000 YEARS AGO FROM ISOTOPIC COMPOSITION OF CONIFER WOOD |
title_fullStr |
CLIMATE IN THE GREAT LAKES REGION BETWEEN 14,000 AND 4000 YEARS AGO FROM ISOTOPIC COMPOSITION OF CONIFER WOOD |
title_full_unstemmed |
CLIMATE IN THE GREAT LAKES REGION BETWEEN 14,000 AND 4000 YEARS AGO FROM ISOTOPIC COMPOSITION OF CONIFER WOOD |
title_sort |
climate in the great lakes region between 14,000 and 4000 years ago from isotopic composition of conifer wood |
publisher |
Radiocarbon |
publishDate |
2006 |
url |
https://journals.uair.arizona.edu/index.php/radiocarbon/article/view/2863 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Radiocarbon; Vol 48, No 2 (2006); 205-217 0033-8222 |
op_relation |
https://journals.uair.arizona.edu/index.php/radiocarbon/article/view/2863/2626 https://journals.uair.arizona.edu/index.php/radiocarbon/article/view/2863 |
_version_ |
1766031453968138240 |