Aeolian imprints of multiple Mediterranean invasions of the Black Sea during Pleistocene
Yükleniyor...
Dosyalar
Tarih
2022-03-04
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier B.V.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
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.
Açıklama
This work was supported by the Scientific and Technological Research Council of Turkey (TUBITAK; project number: 113Y418 ) and the Turkish Academy of Sciences (TUBA). We would like to thank Mustafa Avcıoğlu, Çağlar Çakır, Emrah Özpolat, Hakan Kaya and Abdullah Akbaş for their assistance in the field studies. Graham Lee is thanked for his help in correcting the English text of the article. We are honoured to dedicate this study in loving memory of the great Turkish Geographer, Professor Oğuz Erol, who passed away on April 11, 2014.
Anahtar Kelimeler
Black Sea, Carbonate aeolianite, Climate change, Interglacial, Marine isotope stages, Ooid, Paleosol, Bosporus Strait, Caspian Sea, Istanbul, Mediterranean Sea, Bear, Calcium carbonate, Evaporation, Facies analysis, Inland sea, Pleistocene, Quaternary, Transformation, Transgression, Sharon coastal-plain, Lord-howe-island, Level highstand, Single-aliquot, Luminescence chronology, Dose-rate, Quaternary stratigraphy, Middle Pleistocene, Western-Australia, Messinian event
Kaynak
Palaeogeography, Palaeoclimatology, Palaeoecology
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
592
Sayı
Künye
Erginal, A. E., Güneç Kıyak, N., Makaroğlu, Ö., Bozcu, M., Öztürk, M. Z., Selim, H. H., Nowacyzk, N. R., Kaya, N., Öztürk, T., Karabıyıkoğlu, M. & Polymeris, G. S. (2022). Aeolian imprints of multiple Mediterranean invasions of the Black Sea during Pleistocene. Palaeogeography, Palaeoclimatology, Palaeoecology, 592, 1-14. doi:10.1016/j.palaeo.2022.110902
