Biostratigraphy of Late Holocene bottom sediments from the Northern part of Chukchi Sea
The research goal is the investigation of environmental processes of recent sedimentation in the Arctic Ocean area. A short core (length – 37 cm) was taken from the Northern part of the Chukchi Sea. Analytical methods included macroscopic sedimentological description by smear-slides, dating by γ-mea...
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Online Access: | https://doi.org/10.31951/2658-3518-2024-A-2-48 |
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fteawag:oai:dora:eawag_32902 2024-09-15T17:53:28+00:00 Biostratigraphy of Late Holocene bottom sediments from the Northern part of Chukchi Sea Vologina, E.G. Kulagina, N.V. Chernyaeva, G.P. Sturm, M. Kolesnik, A.N. 2024 https://doi.org/10.31951/2658-3518-2024-A-2-48 eng eng Limnological Institute SB RAS Limnology and Freshwater Biology--Limnology Freshw. Biol.--journals:8019--2658-3518 eawag:32902 doi:10.31951/2658-3518-2024-A-2-48 scopus: 2-s2.0-85193220126 journal id: journals:8019 issn: 2658-3518 Chukchi Sea bottom sediments Little Ice Age recent sedimentation pollen diatoms Journal Article Text 2024 fteawag https://doi.org/10.31951/2658-3518-2024-A-2-48 2024-06-24T14:03:00Z The research goal is the investigation of environmental processes of recent sedimentation in the Arctic Ocean area. A short core (length – 37 cm) was taken from the Northern part of the Chukchi Sea. Analytical methods included macroscopic sedimentological description by smear-slides, dating by γ-measurements of 137 Cs and 210 Pb, diatom and palynological analyses. Sedimentation rates at the research site have been determined to be 1 mm y -1 . Thus, the age of the cored sediments spans approximately 400 years, which includes the period of the Little Ice Age. Abundant cold-water diatom species and spores of terrestrial plants within the lower part of the sediment core are characteristic for cold climate conditions, which dominated the Little Ice Age. The occurrence of Jurassic, Cretaceous, and Neogene species of spores and pollen in the Holocene deposits are the evidence of coastal abrasion and the subsequent transfer of the material to the coring site by currents. Southern, subtropical, and tropical species of diatoms within the upper, more recent part of the core reveal the transfer of material by currents from the Pacific Ocean to the Arctic Ocean through the Bering Strait. The results of biostratigraphic analyses indicate environmental changes during the last 400 years, revealed in bottom sediments of the Northern part of the Chukchi Sea. Article in Journal/Newspaper Arctic Ocean Bering Strait Chukchi Chukchi Sea DORA Eawag Limnology and Freshwater Biology 2 48 57 |
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English |
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Chukchi Sea bottom sediments Little Ice Age recent sedimentation pollen diatoms |
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Chukchi Sea bottom sediments Little Ice Age recent sedimentation pollen diatoms Vologina, E.G. Kulagina, N.V. Chernyaeva, G.P. Sturm, M. Kolesnik, A.N. Biostratigraphy of Late Holocene bottom sediments from the Northern part of Chukchi Sea |
topic_facet |
Chukchi Sea bottom sediments Little Ice Age recent sedimentation pollen diatoms |
description |
The research goal is the investigation of environmental processes of recent sedimentation in the Arctic Ocean area. A short core (length – 37 cm) was taken from the Northern part of the Chukchi Sea. Analytical methods included macroscopic sedimentological description by smear-slides, dating by γ-measurements of 137 Cs and 210 Pb, diatom and palynological analyses. Sedimentation rates at the research site have been determined to be 1 mm y -1 . Thus, the age of the cored sediments spans approximately 400 years, which includes the period of the Little Ice Age. Abundant cold-water diatom species and spores of terrestrial plants within the lower part of the sediment core are characteristic for cold climate conditions, which dominated the Little Ice Age. The occurrence of Jurassic, Cretaceous, and Neogene species of spores and pollen in the Holocene deposits are the evidence of coastal abrasion and the subsequent transfer of the material to the coring site by currents. Southern, subtropical, and tropical species of diatoms within the upper, more recent part of the core reveal the transfer of material by currents from the Pacific Ocean to the Arctic Ocean through the Bering Strait. The results of biostratigraphic analyses indicate environmental changes during the last 400 years, revealed in bottom sediments of the Northern part of the Chukchi Sea. |
format |
Article in Journal/Newspaper |
author |
Vologina, E.G. Kulagina, N.V. Chernyaeva, G.P. Sturm, M. Kolesnik, A.N. |
author_facet |
Vologina, E.G. Kulagina, N.V. Chernyaeva, G.P. Sturm, M. Kolesnik, A.N. |
author_sort |
Vologina, E.G. |
title |
Biostratigraphy of Late Holocene bottom sediments from the Northern part of Chukchi Sea |
title_short |
Biostratigraphy of Late Holocene bottom sediments from the Northern part of Chukchi Sea |
title_full |
Biostratigraphy of Late Holocene bottom sediments from the Northern part of Chukchi Sea |
title_fullStr |
Biostratigraphy of Late Holocene bottom sediments from the Northern part of Chukchi Sea |
title_full_unstemmed |
Biostratigraphy of Late Holocene bottom sediments from the Northern part of Chukchi Sea |
title_sort |
biostratigraphy of late holocene bottom sediments from the northern part of chukchi sea |
publisher |
Limnological Institute SB RAS |
publishDate |
2024 |
url |
https://doi.org/10.31951/2658-3518-2024-A-2-48 |
genre |
Arctic Ocean Bering Strait Chukchi Chukchi Sea |
genre_facet |
Arctic Ocean Bering Strait Chukchi Chukchi Sea |
op_relation |
Limnology and Freshwater Biology--Limnology Freshw. Biol.--journals:8019--2658-3518 eawag:32902 doi:10.31951/2658-3518-2024-A-2-48 scopus: 2-s2.0-85193220126 journal id: journals:8019 issn: 2658-3518 |
op_doi |
https://doi.org/10.31951/2658-3518-2024-A-2-48 |
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Limnology and Freshwater Biology |
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2 |
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48 |
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57 |
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1810429310016684032 |