The Sea of Marmara during Marine Isotope Stages 5 and 6
Multi-proxy analyses and lithology of two cores, MRS-CS18 and MRS-CS27, from the İmralı Basin of the Sea of Marmara (SoM) provide novel information on environmental conditions, relative sea level, and sill depths of the straits of Bosporus and Dardanelles during the Marine Isotope Stages (MIS) 5 and...
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fttriple:oai:gotriple.eu:10670/1.w88ok2 2023-05-15T17:23:41+02:00 The Sea of Marmara during Marine Isotope Stages 5 and 6 Çağatay, M. Namık Eriş, K. Kadir Makaroğlu, Özlem Yakupoğlu, Nurettin Henry, Pierre Leroy, Suzanne A.g. Uçarkuş, Gülsen Sakınç, Mehmet Yalamaz, Burak Bozyiğit, Cerennaz Kende, Julia https://doi.org/10.1016/j.quascirev.2019.07.031 https://archimer.ifremer.fr/doc/00509/62030/85720.pdf https://archimer.ifremer.fr/doc/00509/62030/ en eng Elsevier BV doi:10.1016/j.quascirev.2019.07.031 10670/1.w88ok2 https://archimer.ifremer.fr/doc/00509/62030/85720.pdf https://archimer.ifremer.fr/doc/00509/62030/ other Archimer, archive institutionnelle de l'Ifremer Quaternary Science Reviews (0277-3791) (Elsevier BV), 2019-09 , Vol. 220 , P. 124-141 geo anthro-bio Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ fttriple https://doi.org/10.1016/j.quascirev.2019.07.031 2023-01-22T16:39:31Z Multi-proxy analyses and lithology of two cores, MRS-CS18 and MRS-CS27, from the İmralı Basin of the Sea of Marmara (SoM) provide novel information on environmental conditions, relative sea level, and sill depths of the straits of Bosporus and Dardanelles during the Marine Isotope Stages (MIS) 5 and 6. The fossil and multi-proxy geochemical records show that lacustrine conditions prevailed in the SoM during most of MIS 6, from 171 to 134 ka BP, and that the transition to marine conditions during Termination II took place at ∼134.06 ± 1.10 ka BP. MIS 5 interstadials a, c, and e witnessed the formation of three sapropels (MSAP-2, MSAP-3 and MSAP-4) under suboxic to anoxic marine conditions, whereas during stadials MIS 5b (∼94–86) and MIS 5d (∼112–105 ka BP), lacustrine and marine conditions with deposition of sediments having relatively low TOC contents (<2%) prevailed, respectively. Consideration of the global sea level, together with the timing of the marine reconnection of the SoM during Termination II and persistence of the marine conditions during MIS 5, except for MIS 5b and later part of MIS 5a, suggests that the Dardanelles sill depth was at ∼ -75 ± 5 m during the reconnection at Termination II and at −55 ± 5 m during most of MIS 5. On similar considerations of the Black Sea marine reconnections and disruptions during the MIS 5, a sill depth of −35 to −40 m (similar to the present day depth) is indicated for the Bosporus Strait. The SoM geochemical proxy records correlate well with the regional terrestrial and marine records and the NGRIP oxygen isotope record with its Stadial and Interstadial phases, showing the common effect of the North Atlantic climatic events triggered by the perturbations in the Atlantic Meridional Overturning Circulation. However, the amplitude of the oscillations recorded in the SoM during MIS 6 (Penultimate Glacial Period) is relatively small compared to the MIS 4 to MIS 2 (Last Glacial Period). Text NGRIP North Atlantic Unknown Quaternary Science Reviews 220 124 141 |
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English |
topic |
geo anthro-bio |
spellingShingle |
geo anthro-bio Çağatay, M. Namık Eriş, K. Kadir Makaroğlu, Özlem Yakupoğlu, Nurettin Henry, Pierre Leroy, Suzanne A.g. Uçarkuş, Gülsen Sakınç, Mehmet Yalamaz, Burak Bozyiğit, Cerennaz Kende, Julia The Sea of Marmara during Marine Isotope Stages 5 and 6 |
topic_facet |
geo anthro-bio |
description |
Multi-proxy analyses and lithology of two cores, MRS-CS18 and MRS-CS27, from the İmralı Basin of the Sea of Marmara (SoM) provide novel information on environmental conditions, relative sea level, and sill depths of the straits of Bosporus and Dardanelles during the Marine Isotope Stages (MIS) 5 and 6. The fossil and multi-proxy geochemical records show that lacustrine conditions prevailed in the SoM during most of MIS 6, from 171 to 134 ka BP, and that the transition to marine conditions during Termination II took place at ∼134.06 ± 1.10 ka BP. MIS 5 interstadials a, c, and e witnessed the formation of three sapropels (MSAP-2, MSAP-3 and MSAP-4) under suboxic to anoxic marine conditions, whereas during stadials MIS 5b (∼94–86) and MIS 5d (∼112–105 ka BP), lacustrine and marine conditions with deposition of sediments having relatively low TOC contents (<2%) prevailed, respectively. Consideration of the global sea level, together with the timing of the marine reconnection of the SoM during Termination II and persistence of the marine conditions during MIS 5, except for MIS 5b and later part of MIS 5a, suggests that the Dardanelles sill depth was at ∼ -75 ± 5 m during the reconnection at Termination II and at −55 ± 5 m during most of MIS 5. On similar considerations of the Black Sea marine reconnections and disruptions during the MIS 5, a sill depth of −35 to −40 m (similar to the present day depth) is indicated for the Bosporus Strait. The SoM geochemical proxy records correlate well with the regional terrestrial and marine records and the NGRIP oxygen isotope record with its Stadial and Interstadial phases, showing the common effect of the North Atlantic climatic events triggered by the perturbations in the Atlantic Meridional Overturning Circulation. However, the amplitude of the oscillations recorded in the SoM during MIS 6 (Penultimate Glacial Period) is relatively small compared to the MIS 4 to MIS 2 (Last Glacial Period). |
format |
Text |
author |
Çağatay, M. Namık Eriş, K. Kadir Makaroğlu, Özlem Yakupoğlu, Nurettin Henry, Pierre Leroy, Suzanne A.g. Uçarkuş, Gülsen Sakınç, Mehmet Yalamaz, Burak Bozyiğit, Cerennaz Kende, Julia |
author_facet |
Çağatay, M. Namık Eriş, K. Kadir Makaroğlu, Özlem Yakupoğlu, Nurettin Henry, Pierre Leroy, Suzanne A.g. Uçarkuş, Gülsen Sakınç, Mehmet Yalamaz, Burak Bozyiğit, Cerennaz Kende, Julia |
author_sort |
Çağatay, M. Namık |
title |
The Sea of Marmara during Marine Isotope Stages 5 and 6 |
title_short |
The Sea of Marmara during Marine Isotope Stages 5 and 6 |
title_full |
The Sea of Marmara during Marine Isotope Stages 5 and 6 |
title_fullStr |
The Sea of Marmara during Marine Isotope Stages 5 and 6 |
title_full_unstemmed |
The Sea of Marmara during Marine Isotope Stages 5 and 6 |
title_sort |
sea of marmara during marine isotope stages 5 and 6 |
publisher |
Elsevier BV |
url |
https://doi.org/10.1016/j.quascirev.2019.07.031 https://archimer.ifremer.fr/doc/00509/62030/85720.pdf https://archimer.ifremer.fr/doc/00509/62030/ |
genre |
NGRIP North Atlantic |
genre_facet |
NGRIP North Atlantic |
op_source |
Archimer, archive institutionnelle de l'Ifremer Quaternary Science Reviews (0277-3791) (Elsevier BV), 2019-09 , Vol. 220 , P. 124-141 |
op_relation |
doi:10.1016/j.quascirev.2019.07.031 10670/1.w88ok2 https://archimer.ifremer.fr/doc/00509/62030/85720.pdf https://archimer.ifremer.fr/doc/00509/62030/ |
op_rights |
other |
op_doi |
https://doi.org/10.1016/j.quascirev.2019.07.031 |
container_title |
Quaternary Science Reviews |
container_volume |
220 |
container_start_page |
124 |
op_container_end_page |
141 |
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1766113935383068672 |