Radiocarbon dating of mollusk shells from southern Kara Sea sediments
Riverine water and sediment discharge to the Arctic Ocean is among the most important parameters influencing Arctic climate. It is clear that the evaluation of Arctic paleoclimate requires information on the paleodischarge of major rivers entering the sedimentation basin. Presently, the water discha...
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ftdatacite:10.1594/pangaea.726277 2023-05-15T14:50:25+02:00 Radiocarbon dating of mollusk shells from southern Kara Sea sediments Levitan, Mikhail A Roshchina, I A Tolmacheva, A V 2007 application/zip https://dx.doi.org/10.1594/pangaea.726277 https://doi.pangaea.de/10.1594/PANGAEA.726277 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1134/s0016702907060079 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Gravity corer BP03 Akademik Boris Petrov Archive of Ocean Data ARCOD Collection article Collection of Datasets 2007 ftdatacite https://doi.org/10.1594/pangaea.726277 https://doi.org/10.1134/s0016702907060079 2021-11-05T12:55:41Z Riverine water and sediment discharge to the Arctic Ocean is among the most important parameters influencing Arctic climate. It is clear that the evaluation of Arctic paleoclimate requires information on the paleodischarge of major rivers entering the sedimentation basin. Presently, the water discharge of the Ob River accounts for about 12% of the total input of river water into the Arctic Ocean. During the investigation of the Kara Sea in the framework of the Russian-German SIRRO Project, the history of Yenisei discharge received much attention in a number of publications. This paper presents the results of lithological and geochemical investigations with application to the Holocene discharge of the Ob River. Qualitative (SiO2, Al2O3, K2O, and some modules) and quantitative (sedimentation rates and absolute masses of sedimentary material) parameters were used to characterize the history of the Ob sediment discharge. It was shown that the investigated paleochannels of the Ob were initiated at the Pleistocene-Holocene boundary, and during the first half of the Holocene, the river discharge decreased irregularly with decreasing age of sediments. The observed maxima are in fairly good agreement with the data for the Yenisei. We proposed a hypothesis on the influence of glacioisostatic movements in the marginal region of the former Kara ice sheet of late Valdai age on the cessation of marine-fluvial glaciation in the paleochannels of Ob and Yenisei in the periphery of the Ob-Yenisei shoal. Article in Journal/Newspaper Arctic Arctic Ocean Ice Sheet Kara Sea ob river DataCite Metadata Store (German National Library of Science and Technology) Arctic Arctic Ocean Kara Sea |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Gravity corer BP03 Akademik Boris Petrov Archive of Ocean Data ARCOD |
spellingShingle |
Gravity corer BP03 Akademik Boris Petrov Archive of Ocean Data ARCOD Levitan, Mikhail A Roshchina, I A Tolmacheva, A V Radiocarbon dating of mollusk shells from southern Kara Sea sediments |
topic_facet |
Gravity corer BP03 Akademik Boris Petrov Archive of Ocean Data ARCOD |
description |
Riverine water and sediment discharge to the Arctic Ocean is among the most important parameters influencing Arctic climate. It is clear that the evaluation of Arctic paleoclimate requires information on the paleodischarge of major rivers entering the sedimentation basin. Presently, the water discharge of the Ob River accounts for about 12% of the total input of river water into the Arctic Ocean. During the investigation of the Kara Sea in the framework of the Russian-German SIRRO Project, the history of Yenisei discharge received much attention in a number of publications. This paper presents the results of lithological and geochemical investigations with application to the Holocene discharge of the Ob River. Qualitative (SiO2, Al2O3, K2O, and some modules) and quantitative (sedimentation rates and absolute masses of sedimentary material) parameters were used to characterize the history of the Ob sediment discharge. It was shown that the investigated paleochannels of the Ob were initiated at the Pleistocene-Holocene boundary, and during the first half of the Holocene, the river discharge decreased irregularly with decreasing age of sediments. The observed maxima are in fairly good agreement with the data for the Yenisei. We proposed a hypothesis on the influence of glacioisostatic movements in the marginal region of the former Kara ice sheet of late Valdai age on the cessation of marine-fluvial glaciation in the paleochannels of Ob and Yenisei in the periphery of the Ob-Yenisei shoal. |
format |
Article in Journal/Newspaper |
author |
Levitan, Mikhail A Roshchina, I A Tolmacheva, A V |
author_facet |
Levitan, Mikhail A Roshchina, I A Tolmacheva, A V |
author_sort |
Levitan, Mikhail A |
title |
Radiocarbon dating of mollusk shells from southern Kara Sea sediments |
title_short |
Radiocarbon dating of mollusk shells from southern Kara Sea sediments |
title_full |
Radiocarbon dating of mollusk shells from southern Kara Sea sediments |
title_fullStr |
Radiocarbon dating of mollusk shells from southern Kara Sea sediments |
title_full_unstemmed |
Radiocarbon dating of mollusk shells from southern Kara Sea sediments |
title_sort |
radiocarbon dating of mollusk shells from southern kara sea sediments |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2007 |
url |
https://dx.doi.org/10.1594/pangaea.726277 https://doi.pangaea.de/10.1594/PANGAEA.726277 |
geographic |
Arctic Arctic Ocean Kara Sea |
geographic_facet |
Arctic Arctic Ocean Kara Sea |
genre |
Arctic Arctic Ocean Ice Sheet Kara Sea ob river |
genre_facet |
Arctic Arctic Ocean Ice Sheet Kara Sea ob river |
op_relation |
https://dx.doi.org/10.1134/s0016702907060079 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.726277 https://doi.org/10.1134/s0016702907060079 |
_version_ |
1766321445013553152 |