İstanbul Yerbilimleri Dergisi, cilt.22, sa.1, ss.1-19, 2009 (Hakemli Dergi)
Bu çalısma, znik Gölü’nün Kuvaterner döneminde Gemlik Körfezi, Marmara Denizi ve çevre havzalarla olan olasılı baglantısını arastırmak amacıyla gölden derlenen 28 örnek üzerinde yürütülmüstür. Çok az sayıda olmasına karsın denizel foraminiferlerden Rhabdammina abyssorum, Spiroloculina ornata, Siphonaperta aspera, Cycloforina contorta, Quinqueloculina
cf. auberiana, Q. laevigata, Q. seminula, Miliolinella subrotunda, Triloculina marioni, Sigmoilinita costata, Peneroplis pertusus, Globocassidulina subglobosa, Neoeponides bradyi, Neoconorbina terquemi, Rosalina bradyi, R. floridensis, Cibicides advenum, Lobatula lobatula, Asterigerinata mamilla, Nonion depressulum, Ammonia parkinsoniana, A. tepida, Elphidium aculeatum, E.
depressulum ile Tyrrhenocythere amnicola, Loxoconchissa immodulata, Cytherella vulgata, Hiltermannicythere turbida, Loxoconcha rhomboidea, Semicytherura paradoxa, Semicytherura acuminata, Callistocythere intricatoides, Xestoleberis dispar, Urocythereis oblonga gibi bazıları Paratetis’e ait denizel ostrakodlar, gölün Kuvaterner içerisinde Gemlik Körfezi, Marmara Denizi ve Karadeniz ile baglantılı oldugunu düsündürmektedir. Bu veriler, Kuvaterner’de, Karadeniz ile Marmara Denizi arasındaki su baglantılarının, stanbul Bogazı dısında örnegin, Sakarya Nehri-Geyve Bogazı-znik Gölü yoluyla da olabilecegini düsündürmektedir.
This research has been carried out on the 28 samples obtained from Iznik Lake, in order toinvestigate the presence of a connection duringQuaternary between the lake and the Sea of Marmaraand the Black Sea via Gulf of Gemlik. Although theyare found in very low quantity, the observation ofmarine foraminifers and ostracods such as,Rhabdammina abyssorum, Spiroloculina ornata,Siphonaperta aspera, Cycloforina contorta,Quinqueloculina cf. auberiana, Q. laevigata, Q.seminula, Miliolinella subrotunda, Triloculina marioni,Sigmoilinita costata, Peneroplis pertusus,Globocassidulina subglobosa, Neoeponides bradyi,Neoconorbina terquemi, Rosalina bradyi, R. floridensis,Cibicides advenum, Lobatula lobatula, Asterigerinatamamilla, Nonion depressulum, Ammonia parkinsoniana,
A. tepida, Elphidium aculeatum, E. depressulum andrecent Tyrrhenocythere amnicola, Loxoconchissaimmodulata, Cytherella vulgata, Hiltermannicythereturbida, Loxoconcha rhomboidea, Semicytheruraparadoxa, Semicytherura acuminata, Callistocythere
intricatoides, Xestoleberis dispar, Urocythereis oblongasuggests that the Iznik lake was connected through theGulf of Gemlik to the Sea of Marmara in the recent past.Limnocythere inopinata sevanensis Bubikyan ofthe Paratethys origin has been recorded in Sevan Lake,Armenia (Wilkinson vd., 2005). It is noteworthy that it is also observed in the sediments of Iznik Lake, suggesting that it might have been introduced to the Seaof Marmara (then to Iznik Lake), via a connectionbetween the Black Sea and Sea of Marmara during the Quaternary. This can be considered as another evidence proof for a waterway connection between the Sea ofMarmara and Black Sea via the Sakarya River-Sapanca Lake-znik Lake-Gulf of Gemlik. This newly suggested water-way follows a path consisting of the Sakarya River-Geyve Gorge-Iznik Lake.