Lateglacial-Middle Holocene stable isotope records in two coeval stalagmites from the Bihor Mountains, NW Romania
Oxygen and carbon stable isotope records of two stalagmites from NW Romania provide a continuous climatic record between 14.8 and 5.6 ka BP. The chronology is established by 21 TIMS uranium series ages. Uncertainties in the isotope chronology range between ą20 and ą100 yr. The d18 O values are posit...
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Polish Geological Institute-National Research Institute
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ftjgq:oai:geojournals.pgi.gov.pl:article/7378 2024-09-15T18:09:55+00:00 Lateglacial-Middle Holocene stable isotope records in two coeval stalagmites from the Bihor Mountains, NW Romania Tămaş, Tudor Onac, Bogdan P. Bojar, Ana-Voica 2010-03-27 application/pdf https://gq.pgi.gov.pl/article/view/7378 eng eng Polish Geological Institute-National Research Institute https://gq.pgi.gov.pl/article/view/7378/6028 10.7306/gq.v49i2.7378.g6028 https://gq.pgi.gov.pl/article/view/7378 Geological Quarterly; Vol. 49 No. 2 (2005); 185-194 Geological Quarterly; Tom 49 Nr 2 (2005); 185-194 1641-7291 10.7306/gq.v49i2 NW Romania Lateglacial-Middle Holocene stalagmites stable isotopes uranium-thorium TIMS dating info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2010 ftjgq https://doi.org/10.7306/gq.v49i2 2024-07-30T03:29:08Z Oxygen and carbon stable isotope records of two stalagmites from NW Romania provide a continuous climatic record between 14.8 and 5.6 ka BP. The chronology is established by 21 TIMS uranium series ages. Uncertainties in the isotope chronology range between ą20 and ą100 yr. The d18 O values are positively correlated with temperature, whereas d13 C fluctuations suggest changes in soil CO2 production. Lateglacial deposition of both stalagmites started at ~14.8 ka BP. The d18 O records subsequently show a slow decline in temperatures until 12.6 ka BP. Three warmer periods with increased soil productivity occurred at 14.5-13.9 ka BP, 13.6-13.2 ka BP, and 12.9-12.6 ka BP. Lower d18 O and high d13 C values between 12.6 and 11.4 (11.7) ka BP indicate a cold and dry climate during the Younger Dryas (GS-1). During the Early Holocene, three short cold intervals are marked on the d18 O profiles at 11.0-10.6, 10.5-10.2 and 9.4-9.1 ka BP. For the remainder of the Holocene sequence, the d18 O records show less variation between 9 and 7.8 ka BP and gradual warming from 7.6-5.6 ka BP. The speleothem records correlate with the Greenland ice core records and with other proxies throughout Europe and the North Atlantic region. Article in Journal/Newspaper Greenland Greenland ice core ice core North Atlantic Geological Quarterly |
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Open Polar |
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Geological Quarterly |
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ftjgq |
language |
English |
topic |
NW Romania Lateglacial-Middle Holocene stalagmites stable isotopes uranium-thorium TIMS dating |
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NW Romania Lateglacial-Middle Holocene stalagmites stable isotopes uranium-thorium TIMS dating Tămaş, Tudor Onac, Bogdan P. Bojar, Ana-Voica Lateglacial-Middle Holocene stable isotope records in two coeval stalagmites from the Bihor Mountains, NW Romania |
topic_facet |
NW Romania Lateglacial-Middle Holocene stalagmites stable isotopes uranium-thorium TIMS dating |
description |
Oxygen and carbon stable isotope records of two stalagmites from NW Romania provide a continuous climatic record between 14.8 and 5.6 ka BP. The chronology is established by 21 TIMS uranium series ages. Uncertainties in the isotope chronology range between ą20 and ą100 yr. The d18 O values are positively correlated with temperature, whereas d13 C fluctuations suggest changes in soil CO2 production. Lateglacial deposition of both stalagmites started at ~14.8 ka BP. The d18 O records subsequently show a slow decline in temperatures until 12.6 ka BP. Three warmer periods with increased soil productivity occurred at 14.5-13.9 ka BP, 13.6-13.2 ka BP, and 12.9-12.6 ka BP. Lower d18 O and high d13 C values between 12.6 and 11.4 (11.7) ka BP indicate a cold and dry climate during the Younger Dryas (GS-1). During the Early Holocene, three short cold intervals are marked on the d18 O profiles at 11.0-10.6, 10.5-10.2 and 9.4-9.1 ka BP. For the remainder of the Holocene sequence, the d18 O records show less variation between 9 and 7.8 ka BP and gradual warming from 7.6-5.6 ka BP. The speleothem records correlate with the Greenland ice core records and with other proxies throughout Europe and the North Atlantic region. |
format |
Article in Journal/Newspaper |
author |
Tămaş, Tudor Onac, Bogdan P. Bojar, Ana-Voica |
author_facet |
Tămaş, Tudor Onac, Bogdan P. Bojar, Ana-Voica |
author_sort |
Tămaş, Tudor |
title |
Lateglacial-Middle Holocene stable isotope records in two coeval stalagmites from the Bihor Mountains, NW Romania |
title_short |
Lateglacial-Middle Holocene stable isotope records in two coeval stalagmites from the Bihor Mountains, NW Romania |
title_full |
Lateglacial-Middle Holocene stable isotope records in two coeval stalagmites from the Bihor Mountains, NW Romania |
title_fullStr |
Lateglacial-Middle Holocene stable isotope records in two coeval stalagmites from the Bihor Mountains, NW Romania |
title_full_unstemmed |
Lateglacial-Middle Holocene stable isotope records in two coeval stalagmites from the Bihor Mountains, NW Romania |
title_sort |
lateglacial-middle holocene stable isotope records in two coeval stalagmites from the bihor mountains, nw romania |
publisher |
Polish Geological Institute-National Research Institute |
publishDate |
2010 |
url |
https://gq.pgi.gov.pl/article/view/7378 |
genre |
Greenland Greenland ice core ice core North Atlantic |
genre_facet |
Greenland Greenland ice core ice core North Atlantic |
op_source |
Geological Quarterly; Vol. 49 No. 2 (2005); 185-194 Geological Quarterly; Tom 49 Nr 2 (2005); 185-194 1641-7291 10.7306/gq.v49i2 |
op_relation |
https://gq.pgi.gov.pl/article/view/7378/6028 10.7306/gq.v49i2.7378.g6028 https://gq.pgi.gov.pl/article/view/7378 |
op_doi |
https://doi.org/10.7306/gq.v49i2 |
_version_ |
1810447525889441792 |