Research output: Contribution to journal › Article › peer-review
Impact of climate change on sedimentation processes in the eastern Gulf of Finland during the Middle to Late Holocene. / Ryabchuk, Daria V.; Sergeev, Alexander Yu; Prishchepenko, Diana V.; Zhamoida, Vladimir A.; Elkina, Daria V.; Piskarev, Alexey L.; Bashirova, Leyla D.; Ponomarenko, Ekaterina P.; Budanov, Leonid M.; Grigoriev, Andrey G.; Evdokimenko, Anton V.
In: Boreas, Vol. 50, No. 2, 2021, p. 381-403.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Impact of climate change on sedimentation processes in the eastern Gulf of Finland during the Middle to Late Holocene
AU - Ryabchuk, Daria V.
AU - Sergeev, Alexander Yu
AU - Prishchepenko, Diana V.
AU - Zhamoida, Vladimir A.
AU - Elkina, Daria V.
AU - Piskarev, Alexey L.
AU - Bashirova, Leyla D.
AU - Ponomarenko, Ekaterina P.
AU - Budanov, Leonid M.
AU - Grigoriev, Andrey G.
AU - Evdokimenko, Anton V.
N1 - Funding Information: Acoustic data analyses and interpretation was carried out under project No. 17‐7720041 of Russian Science Foundation. Palaeomagnetic study, multibeam data analyses and interpretation were undertaken with support of the Russian Foundation for Basic Research grant No. 19‐05‐00768. Interpretation of LOI and TOC analysis was partly supported by the state assignment of IO RAS (Theme No. 0149‐2019‐0013). We acknowledge two anonymous reviewers for valuable comments that greatly improved this manuscript. Prof. Cherith Moses is warmly thanked for the English editing. Publisher Copyright: © 2020 Collegium Boreas. Published by John Wiley & Sons Ltd Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2021
Y1 - 2021
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85099513636&partnerID=8YFLogxK
U2 - 10.1111/bor.12500
DO - 10.1111/bor.12500
M3 - Article
AN - SCOPUS:85099513636
VL - 50
SP - 381
EP - 403
JO - Boreas
JF - Boreas
SN - 0300-9483
IS - 2
ER -
ID: 74987134