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  Aeolian imprints of multiple Mediterranean invasions of the Black Sea during Pleistocene

Erginal, A. E., Kıyak, N. G., Makaroğlu, Ö., Bozcu, M., Öztürk, M. Z., Selim, H. H., Nowaczyk, N., Kaya, N., Ozturk, T., Karabıyıkoğlu, M., Polymeris, G. S. (2022): Aeolian imprints of multiple Mediterranean invasions of the Black Sea during Pleistocene. - Palaeogeography Palaeoclimatology Palaeoecology, 592, 110902.
https://doi.org/10.1016/j.palaeo.2022.110902

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Erginal, Ahmet Evren1, Autor
Kıyak, Nafiye Güneç1, Autor
Makaroğlu, Özlem1, Autor
Bozcu, Mustafa1, Autor
Öztürk, Muhammed Zeynel1, Autor
Selim, Haluk Hamit1, Autor
Nowaczyk, N.2, Autor              
Kaya, Nurcan1, Autor
Ozturk, Tugba1, Autor
Karabıyıkoğlu, Mustafa1, Autor
Polymeris, Georgios S.1, Autor
Affiliations:
1External Organizations, ou_persistent22              
24.3 Climate Dynamics and Landscape Evolution, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146046              

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 Zusammenfassung: Climate changes determined the repeated connections between the Black Sea, Caspian Sea and Mediterranean Sea. The landlocked anoxic Black Sea basin was exposed to several transgressions throughout Quaternary by the Mediterranean Sea through the Straits of Istanbul (Bosphorus) and by the Caspian Sea through the Manych-Kerch spillway. Sedimentological records of these connections are limited mostly to the marine terrace deposits of Marine Isotope Stage (MIS) 5e while the pre-MIS 5e period remains uncertain due to a lack of robust facies and chronological data from deep-sea sedimentary sequences. Here we discuss the imprints of multiple Mediterranean transgressions during Middle Pleistocene in the Black Sea based on facies analysis and the optical age of coastal carbonate aeolianites. Contrary to today's hydro-climate of the Black Sea, the aeolianites bear witness to the transformation of the Black Sea into a warm inland sea during successive Mediterranean invasions. Prior to the onset of aeolian deposition, paleosols were formed on the Eocene-aged hardened sandy silts, suggesting strongly washed soil. This is evidenced by no calcium carbonate and a high Rb/Sr ratio, with quartz amounting to of 99.8%. According to our OSL ages, carbonates deposited on the shelf plain under higher temperature and increased evaporation conditions in MIS 15 and the later interglacial phases were transported to the coastal sand dunes during the transitional phases of MIS 15–14, MIS 13–12, MIS 11–10 and MIS 9–8. We suggest that the carbonate-rich and ooid-containing aeolianites were repeatedly formed in the multiple Mediterranean transgression stages, beginning with an increasingly severe dry phase following the Brunhes-Matuyama magnetic reversal.

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 Datum: 20222022
 Publikationsstatus: Final veröffentlicht
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 Identifikatoren: DOI: 10.1016/j.palaeo.2022.110902
GFZPOF: p4 T2 Ocean and Cryosphere
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Titel: Palaeogeography Palaeoclimatology Palaeoecology
Genre der Quelle: Zeitschrift, SCI, Scopus
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Seiten: - Band / Heft: 592 Artikelnummer: 110902 Start- / Endseite: - Identifikator: CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals375
Publisher: Elsevier