High-resolution geological mapping towards an understanding of post-glacial development and Holocene sedimentation processes in the eastern Gulf of Finland: an EMODnet Geology case study

Ryabchuck, D.; Sergeev, A.; Zhamoida, Vladimir; Budanov, Leonid; Krek, A. V.; Neevin, Igor; Bubnova, E. S.; Danchenkov, Aleksandr; Kovaleva, Olga

doi:10.1144/sp505-2019-127

Cited by 4 publications

(7 citation statements)

References 30 publications

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“…The location of sampling sites was chosen based on SBP data previously obtained (Ryabchuk et al . 2020b) from the gentle slopes of submarine ridges (Fig. 6).…”

Section: Resultsmentioning

confidence: 99%

“…The AUs were assigned based on the approaches described in detail in Ryabchuk et al . (2020b) and Spiridonov et al . (2007).…”

Section: Methodsmentioning

confidence: 95%

“…The EGoF acoustic stratigraphy of Quaternary deposits has generally been well known since the 1980s (Spiridonov et al 1988(Spiridonov et al , 2007Winterhalter 1992) and has been supported by geological and geophysical research undertaken since that time (Kaskela et al 2017;Budanov et al 2019;Ryabchuk et al 2020a). It has been shown that acoustic units (AUs) distinguished on the SBP correspond to the different Baltic Sea evolution stages (Ryabchuk et al 2020a). Geological interpretation of SBP is supported by the results collected from more than 4000 long sediment cores (metadata are available at https://www.emodnet-geology.eu/map-viewer/?p= boreholes).…”

Section: Study Areamentioning

confidence: 93%

“…The AUs were assigned based on the approaches described in detail in Ryabchuk et al (2020b) and Spiridonov et al (2007). To investigate the modern sedimentary conditionswithin the sampling sites, surface sediments were taken using a box-corer.…”

Section: Methodsmentioning

confidence: 99%

“…-Sampling sites 18MI-1t and 18MI-2t (Figs 6, 7, S3) were located in the eastern part of the Gogland sedimentary basin, at water depths of 48 m and 38.25 m, respectively. The location of sampling sites was chosen based on SBP data previously obtained (Ryabchuk et al 2020b) from the gentle slopes of submarine ridges (Fig. 6).…”

Section: Eastern Part Of Sedimentary Basin 8e Near Moshchnymentioning

confidence: 99%

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Impact of climate change on sedimentation processes in the eastern Gulf of Finland during the Middle to Late Holocene

Ryabchuk

Sergeev

Prishchepenko

et al. 2020

Boreas

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This paper presents the results of high‐resolution sedimentological analyses of sediment cores from the eastern Gulf of Finland (Baltic Sea). Sampling sites in the periphery of sedimentary basins were selected on the basis of acoustic profiling analyses. The research allowed tracing of the transition from the freshwater Ancylus Lake to the Littorina Sea. A specific transitional layer of ‘blue clays’, indicating the first stage of brackish water inflow into the Gulf of Finland, was dated to 9.1 ka BP. The date of first appearance of Littorina silty clay sedimentation was as follows: from 8.0 ka BP near Gogland Island, from 7.0 ka BP near Moshchny Island and from 5.9 ka BP near the Berezovye Islands. Holocene cycles of hypoxia, associated with periods of warming, were identified and cycles of ‘warming – transgression – anoxic conditions’ and ‘cooling – regression – oxygen‐rich conditions’ were revealed. During the first stage of Littorina transgression (8.0–7.0 ka BP), the near‐bottom environment in the deepest sedimentary basin of the eastern Gulf of Finland was characterized by oxygen deficiency. In contrast, 7.0–6.0 ka BP was dominated by oxygen‐rich conditions and active processes of bioturbation. Anoxic conditions occurred again from 6.0–4.8 ka BP (Holocene Climatic Optimum), resulting in the accumulation of undisturbed silty clays with subhorizontal lamination. The interval from 4.8–2.0 ka was then characterized by oxygen‐rich near‐bottom conditions favourable for benthic organisms. The grain‐size distributions throughout the sediment cores from the easternmost sedimentary basins suggest a relative lowering of the sea level from 3.5–1.8 ka and a rise after 1.8 ka BP.

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“…The location of sampling sites was chosen based on SBP data previously obtained (Ryabchuk et al . 2020b) from the gentle slopes of submarine ridges (Fig. 6).…”

Section: Resultsmentioning

confidence: 99%

“…The AUs were assigned based on the approaches described in detail in Ryabchuk et al . (2020b) and Spiridonov et al . (2007).…”

Section: Methodsmentioning

confidence: 95%

Section: Study Areamentioning

confidence: 93%

Section: Methodsmentioning

confidence: 99%

Section: Eastern Part Of Sedimentary Basin 8e Near Moshchnymentioning

confidence: 99%

See 3 more Smart Citations

Impact of climate change on sedimentation processes in the eastern Gulf of Finland during the Middle to Late Holocene

Ryabchuk

Sergeev

Prishchepenko

et al. 2020

Boreas

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Offshore murtoos indicate warm-based Fennoscandian ice-sheet conditions during the Bølling warming in the northern Gulf of Riga, Baltic Sea

et al. 2023

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Mapping the Geology and Topography of the European Seas (European Marine Observation and Data Network, EMODnet)

Moses

Vallius

2020

QJEGH

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Marine engineering geology requires good seabed maps and access to metadata. In 2009 the European Commission established the European Marine Observation and Data Network (EMODnet) programme, which is now in its fourth phase (2019–21). The programme is designed to assemble existing, but fragmented and partly inaccessible, marine data and to create contiguous and publicly available information layers which are interoperable and free of restrictions on use, and which encompass whole marine basins. This collection highlights the use of EMODnet Geology data for better understanding seafloor geology, coastal behaviour and geological events and probabilities. The papers illustrate methodological approaches to harmonizing and representing geological and geohazards information, resultant maps and datasets and their uses, alongside national datasets, for marine spatial planning.Thematic collection: This article is part of the Mapping the Geology and Topography of the European Seas (EMODnet) collection available at: https://www.lyellcollection.org/cc/EMODnet

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High-resolution geological mapping towards an understanding of post-glacial development and Holocene sedimentation processes in the eastern Gulf of Finland: an EMODnet Geology case study

Cited by 4 publications

References 30 publications

Impact of climate change on sedimentation processes in the eastern Gulf of Finland during the Middle to Late Holocene

Impact of climate change on sedimentation processes in the eastern Gulf of Finland during the Middle to Late Holocene

Offshore murtoos indicate warm-based Fennoscandian ice-sheet conditions during the Bølling warming in the northern Gulf of Riga, Baltic Sea

Mapping the Geology and Topography of the European Seas (European Marine Observation and Data Network, EMODnet)

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