Mass movement deposits in the 3.6 Ma sediment record of Lake El'gygytgyn, Far East Russian Arctic
This paper focuses on the characterization and genesis of mass movement deposits (MMDs) in the Quaternary and Pliocene sediments of Lake El'gygytgyn, Far East Russian Arctic. Three partly overlapping holes were drilled into the 320 m long sediment record at International Continental Scientific...
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Copernicus Publications
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fttriple:oai:gotriple.eu:oai:doaj.org/article:bac0b1e912fd4222a1a90cc4085c3ff1 2023-05-15T15:00:36+02:00 Mass movement deposits in the 3.6 Ma sediment record of Lake El'gygytgyn, Far East Russian Arctic M. A. Sauerbrey O. Juschus A. C. Gebhardt V. Wennrich N. R. Nowaczyk M. Melles 2013-08-01 https://doi.org/10.5194/cp-9-1949-2013 http://www.clim-past.net/9/1949/2013/cp-9-1949-2013.pdf https://doaj.org/article/bac0b1e912fd4222a1a90cc4085c3ff1 en eng Copernicus Publications doi:10.5194/cp-9-1949-2013 1814-9324 1814-9332 http://www.clim-past.net/9/1949/2013/cp-9-1949-2013.pdf https://doaj.org/article/bac0b1e912fd4222a1a90cc4085c3ff1 undefined Climate of the Past, Vol 9, Iss 4, Pp 1949-1967 (2013) geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2013 fttriple https://doi.org/10.5194/cp-9-1949-2013 2023-01-22T18:58:43Z This paper focuses on the characterization and genesis of mass movement deposits (MMDs) in the Quaternary and Pliocene sediments of Lake El'gygytgyn, Far East Russian Arctic. Three partly overlapping holes were drilled into the 320 m long sediment record at International Continental Scientific Drilling Program (ICDP) Site 5011-1 in the lake basin, recovering the Quaternary almost completely, and the Pliocene down to 3.6 Ma with 52% recovery. Mass movement deposits were investigated in all three cores, based on macroscopical core descriptions, radiographic images, high-resolution magnetic susceptibility and gamma-ray density. Five different types of MMDs were identified: turbidites, grain-flow deposits, debrites, slumps and slides. These are formed by transitional mass movement processes, and thus can be co-generic. An initial slope failure is thought to transform into a debris flow that deforms frontal sediments, partly disintegrates and dilutes into a turbidity flow. Turbidites are by far the most frequent MMD type in the lake center. They occur throughout the record in all pelagic sedimentary facies, but they are thinner in facies formed during cold climate conditions. All other MMDs, by contrast, incise exclusively the pelagic facies deposited during warm climates. In the 123 m thick Quaternary composite sediment record 230 mass movement events are identified, comprising 33% of the sediment length. Turbidites contribute 93% of the number of Quaternary MMDs, but only 35% of their thickness. In the Pliocene sediments between 123 and 320 m, 181 additional mass movement deposits are identified, which constitute ~33% of the recovered sediments. The mean recurrence interval for MMDs is 11 and 5 ka in the Quaternary and Pliocene, respectively. Article in Journal/Newspaper Arctic Magnetic susceptibility Unknown Arctic Climate of the Past 9 4 1949 1967 |
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English |
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geo |
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geo M. A. Sauerbrey O. Juschus A. C. Gebhardt V. Wennrich N. R. Nowaczyk M. Melles Mass movement deposits in the 3.6 Ma sediment record of Lake El'gygytgyn, Far East Russian Arctic |
topic_facet |
geo |
description |
This paper focuses on the characterization and genesis of mass movement deposits (MMDs) in the Quaternary and Pliocene sediments of Lake El'gygytgyn, Far East Russian Arctic. Three partly overlapping holes were drilled into the 320 m long sediment record at International Continental Scientific Drilling Program (ICDP) Site 5011-1 in the lake basin, recovering the Quaternary almost completely, and the Pliocene down to 3.6 Ma with 52% recovery. Mass movement deposits were investigated in all three cores, based on macroscopical core descriptions, radiographic images, high-resolution magnetic susceptibility and gamma-ray density. Five different types of MMDs were identified: turbidites, grain-flow deposits, debrites, slumps and slides. These are formed by transitional mass movement processes, and thus can be co-generic. An initial slope failure is thought to transform into a debris flow that deforms frontal sediments, partly disintegrates and dilutes into a turbidity flow. Turbidites are by far the most frequent MMD type in the lake center. They occur throughout the record in all pelagic sedimentary facies, but they are thinner in facies formed during cold climate conditions. All other MMDs, by contrast, incise exclusively the pelagic facies deposited during warm climates. In the 123 m thick Quaternary composite sediment record 230 mass movement events are identified, comprising 33% of the sediment length. Turbidites contribute 93% of the number of Quaternary MMDs, but only 35% of their thickness. In the Pliocene sediments between 123 and 320 m, 181 additional mass movement deposits are identified, which constitute ~33% of the recovered sediments. The mean recurrence interval for MMDs is 11 and 5 ka in the Quaternary and Pliocene, respectively. |
format |
Article in Journal/Newspaper |
author |
M. A. Sauerbrey O. Juschus A. C. Gebhardt V. Wennrich N. R. Nowaczyk M. Melles |
author_facet |
M. A. Sauerbrey O. Juschus A. C. Gebhardt V. Wennrich N. R. Nowaczyk M. Melles |
author_sort |
M. A. Sauerbrey |
title |
Mass movement deposits in the 3.6 Ma sediment record of Lake El'gygytgyn, Far East Russian Arctic |
title_short |
Mass movement deposits in the 3.6 Ma sediment record of Lake El'gygytgyn, Far East Russian Arctic |
title_full |
Mass movement deposits in the 3.6 Ma sediment record of Lake El'gygytgyn, Far East Russian Arctic |
title_fullStr |
Mass movement deposits in the 3.6 Ma sediment record of Lake El'gygytgyn, Far East Russian Arctic |
title_full_unstemmed |
Mass movement deposits in the 3.6 Ma sediment record of Lake El'gygytgyn, Far East Russian Arctic |
title_sort |
mass movement deposits in the 3.6 ma sediment record of lake el'gygytgyn, far east russian arctic |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/cp-9-1949-2013 http://www.clim-past.net/9/1949/2013/cp-9-1949-2013.pdf https://doaj.org/article/bac0b1e912fd4222a1a90cc4085c3ff1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Magnetic susceptibility |
genre_facet |
Arctic Magnetic susceptibility |
op_source |
Climate of the Past, Vol 9, Iss 4, Pp 1949-1967 (2013) |
op_relation |
doi:10.5194/cp-9-1949-2013 1814-9324 1814-9332 http://www.clim-past.net/9/1949/2013/cp-9-1949-2013.pdf https://doaj.org/article/bac0b1e912fd4222a1a90cc4085c3ff1 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cp-9-1949-2013 |
container_title |
Climate of the Past |
container_volume |
9 |
container_issue |
4 |
container_start_page |
1949 |
op_container_end_page |
1967 |
_version_ |
1766332685450477568 |