Stable isotope composition (δ¹⁸О, δ²H and dexc) of massive ice bodies, Eastern Chukotka
Massive ice (MI) bodies exposed in floodplain and terraces at 7 sites have been studied from 1985 to 2020. In recent research stable oxygen and hydrogen isotope composition of massive ice bodies on the extreme North-Eastern Chukotka (near Lavrentiya settlement and Koolen' lake) have been studie...
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ftdatacite:10.1594/pangaea.939626 2023-05-15T15:54:48+02:00 Stable isotope composition (δ¹⁸О, δ²H and dexc) of massive ice bodies, Eastern Chukotka Vasil'chuk, Yurij K Maslakov, Alexey A Budantseva, Nadine A Vasil'chuk, Alla Constantinovna Komova, Nina N 2022 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.939626 https://doi.pangaea.de/10.1594/PANGAEA.939626 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.24057/2071-9388-2021-020 https://dx.doi.org/10.31857/s2076673420020038 https://dx.doi.org/10.1002/ppp.1991 https://dx.doi.org/10.1134/s1028334x18060107 https://dx.doi.org/10.15356/2076-6734-2018-1-78-93 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY cryostratigraphy massive ice North-Eastern Chukotka Stable isotopes stable isotopes of water Event label Latitude of event Longitude of event Location Sample comment Number of subsamples δ18O, minimum δ18O δ18O, maximum δ Deuterium, minimum δ Deuterium δ Deuterium, maximum Deuterium excess, minimum Deuterium excess Deuterium excess, maximum Slope Regression intercept Coefficient of determination Snow/ice sample Calculated Statistical analysis Dataset dataset 2022 ftdatacite https://doi.org/10.1594/pangaea.939626 https://doi.org/10.24057/2071-9388-2021-020 https://doi.org/10.31857/s2076673420020038 https://doi.org/10.1002/ppp.1991 https://doi.org/10.1134/s1028334x18060107 https://doi.org/10.15356/2076-6734-2018-1-78 2022-03-10T11:18:03Z Massive ice (MI) bodies exposed in floodplain and terraces at 7 sites have been studied from 1985 to 2020. In recent research stable oxygen and hydrogen isotope composition of massive ice bodies on the extreme North-Eastern Chukotka (near Lavrentiya settlement and Koolen' lake) have been studied in detail. It was concluded that studied massive ice bodies have intrasedimental origin and most likely are dated back to the Late Pleistocene age. Mean δ18O values range from –18.5 ‰ to –15 ‰ whereas mean δ2H values range from –146‰ to –128 ‰ that is higher than expected for the Late Pleistocene ice bodies in this region, which most likely resulted from isotopic fractionation during freezing of water-saturated sediments in a closed system when forming ice isotopically enriched compared with initial water. The analysis of co-isotope ratios for massive ice shows that initial water is mainly of meteoric origin (precipitation, water of lakes and taliks). : For stable isotope analysis, ice was sampled both vertically and horizontally from the ice beds, depending on the outcrop accessibility. Isotope oxygen in MI sampled in 1985-1987 was measured using a G-50 device in the isotope geology laboratory at the Institute of Geology, Tallinn, Estonia (Prof. R. Vaykmäe) and in the isotope hydrology laboratory at the Institute of Water Problems of Russian Academy of Science (Dr. A. Esikov). Control measurements were taken in both laboratories. The massive beds sampled during field studies in 2016-2020 were analyzed in the stable isotope laboratory of the Geography Faculty at Lomonosov Moscow State University (Prof. Yu. Vasil'chuk and Dr. N. Budantseva) using a Finnigan Delta-V Plus mass spectrometer applying equilibration techniques. International water standards (SMOW, GRESP, and SLAP) were used for calibration. Analytical precision was ±0.4‰ for δ18O and ±1‰ for δ2H. All values are presented in δ-notation in per mille (‰) relative to the Vienna Standard Mean Ocean Water (VSMOW). Dataset Chukotka DataCite Metadata Store (German National Library of Science and Technology) Lavrentiya ENVELOPE(-171.021,-171.021,65.586,65.586) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
cryostratigraphy massive ice North-Eastern Chukotka Stable isotopes stable isotopes of water Event label Latitude of event Longitude of event Location Sample comment Number of subsamples δ18O, minimum δ18O δ18O, maximum δ Deuterium, minimum δ Deuterium δ Deuterium, maximum Deuterium excess, minimum Deuterium excess Deuterium excess, maximum Slope Regression intercept Coefficient of determination Snow/ice sample Calculated Statistical analysis |
spellingShingle |
cryostratigraphy massive ice North-Eastern Chukotka Stable isotopes stable isotopes of water Event label Latitude of event Longitude of event Location Sample comment Number of subsamples δ18O, minimum δ18O δ18O, maximum δ Deuterium, minimum δ Deuterium δ Deuterium, maximum Deuterium excess, minimum Deuterium excess Deuterium excess, maximum Slope Regression intercept Coefficient of determination Snow/ice sample Calculated Statistical analysis Vasil'chuk, Yurij K Maslakov, Alexey A Budantseva, Nadine A Vasil'chuk, Alla Constantinovna Komova, Nina N Stable isotope composition (δ¹⁸О, δ²H and dexc) of massive ice bodies, Eastern Chukotka |
topic_facet |
cryostratigraphy massive ice North-Eastern Chukotka Stable isotopes stable isotopes of water Event label Latitude of event Longitude of event Location Sample comment Number of subsamples δ18O, minimum δ18O δ18O, maximum δ Deuterium, minimum δ Deuterium δ Deuterium, maximum Deuterium excess, minimum Deuterium excess Deuterium excess, maximum Slope Regression intercept Coefficient of determination Snow/ice sample Calculated Statistical analysis |
description |
Massive ice (MI) bodies exposed in floodplain and terraces at 7 sites have been studied from 1985 to 2020. In recent research stable oxygen and hydrogen isotope composition of massive ice bodies on the extreme North-Eastern Chukotka (near Lavrentiya settlement and Koolen' lake) have been studied in detail. It was concluded that studied massive ice bodies have intrasedimental origin and most likely are dated back to the Late Pleistocene age. Mean δ18O values range from –18.5 ‰ to –15 ‰ whereas mean δ2H values range from –146‰ to –128 ‰ that is higher than expected for the Late Pleistocene ice bodies in this region, which most likely resulted from isotopic fractionation during freezing of water-saturated sediments in a closed system when forming ice isotopically enriched compared with initial water. The analysis of co-isotope ratios for massive ice shows that initial water is mainly of meteoric origin (precipitation, water of lakes and taliks). : For stable isotope analysis, ice was sampled both vertically and horizontally from the ice beds, depending on the outcrop accessibility. Isotope oxygen in MI sampled in 1985-1987 was measured using a G-50 device in the isotope geology laboratory at the Institute of Geology, Tallinn, Estonia (Prof. R. Vaykmäe) and in the isotope hydrology laboratory at the Institute of Water Problems of Russian Academy of Science (Dr. A. Esikov). Control measurements were taken in both laboratories. The massive beds sampled during field studies in 2016-2020 were analyzed in the stable isotope laboratory of the Geography Faculty at Lomonosov Moscow State University (Prof. Yu. Vasil'chuk and Dr. N. Budantseva) using a Finnigan Delta-V Plus mass spectrometer applying equilibration techniques. International water standards (SMOW, GRESP, and SLAP) were used for calibration. Analytical precision was ±0.4‰ for δ18O and ±1‰ for δ2H. All values are presented in δ-notation in per mille (‰) relative to the Vienna Standard Mean Ocean Water (VSMOW). |
format |
Dataset |
author |
Vasil'chuk, Yurij K Maslakov, Alexey A Budantseva, Nadine A Vasil'chuk, Alla Constantinovna Komova, Nina N |
author_facet |
Vasil'chuk, Yurij K Maslakov, Alexey A Budantseva, Nadine A Vasil'chuk, Alla Constantinovna Komova, Nina N |
author_sort |
Vasil'chuk, Yurij K |
title |
Stable isotope composition (δ¹⁸О, δ²H and dexc) of massive ice bodies, Eastern Chukotka |
title_short |
Stable isotope composition (δ¹⁸О, δ²H and dexc) of massive ice bodies, Eastern Chukotka |
title_full |
Stable isotope composition (δ¹⁸О, δ²H and dexc) of massive ice bodies, Eastern Chukotka |
title_fullStr |
Stable isotope composition (δ¹⁸О, δ²H and dexc) of massive ice bodies, Eastern Chukotka |
title_full_unstemmed |
Stable isotope composition (δ¹⁸О, δ²H and dexc) of massive ice bodies, Eastern Chukotka |
title_sort |
stable isotope composition (δ¹⁸о, δ²h and dexc) of massive ice bodies, eastern chukotka |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2022 |
url |
https://dx.doi.org/10.1594/pangaea.939626 https://doi.pangaea.de/10.1594/PANGAEA.939626 |
long_lat |
ENVELOPE(-171.021,-171.021,65.586,65.586) |
geographic |
Lavrentiya |
geographic_facet |
Lavrentiya |
genre |
Chukotka |
genre_facet |
Chukotka |
op_relation |
https://dx.doi.org/10.24057/2071-9388-2021-020 https://dx.doi.org/10.31857/s2076673420020038 https://dx.doi.org/10.1002/ppp.1991 https://dx.doi.org/10.1134/s1028334x18060107 https://dx.doi.org/10.15356/2076-6734-2018-1-78-93 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.939626 https://doi.org/10.24057/2071-9388-2021-020 https://doi.org/10.31857/s2076673420020038 https://doi.org/10.1002/ppp.1991 https://doi.org/10.1134/s1028334x18060107 https://doi.org/10.15356/2076-6734-2018-1-78 |
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1766390045430775808 |