Akademik Veri Yönetim Sistemi
Yerbilimleri/ Earth Sciences, cilt.40, sa.1, ss.35-71, 2019 (Scopus, TRDizin)
Shallow marine Jurassic-Cretaceous carbonate succession is represented by abundant rudist bearing middle-late Cenomanian platform limestones (Yağca Köy Formation) at the top in the Katran Dağ area, which corresponds to the eastern part of the Bey Dağları Autochthon. Micritic pelagic neptunian dike infillings were first identified within the limestones accumulated in a platform edge environment in this study. Planktonic foraminifera and calcispheres observed in the infillings suggest a deeper marine conditions. These infillings were emplaced at least at three different times. The planktonic foraminiferal assemblages observed within the D2 and D3 infillings indicate that the infillings occurred during the late Coniacian-Santonian and latest Campanian-Maastrichtian times. Although the D1 infilling predates the D2, the age can not be determined as the infilling does not have planktonic foraminifera. Likewise, the age of the infillings D4, D5 and D6 cutting the host rock of neritic limestones or D2 infilling can not be determined as well because of absence of planktonic foraminifera. Hovewer, facies characteristics of some parts of the infilling D4 are more or less similar to the infilling D3. Facies types and planktonic foraminiferal assemblages observed in the infillings D2 and D3 are similar to those documented in the widespread pelagic successions throughout the northern part of the Bey Dağları Autochthon. These data show that the onset and development of the pelagic deposition occurred in the eastern part of the platform as in the northern part. The pelagic deposits accumulated in the eastern part of the platform should have been eroded during the post Santonian and latest Maastrichtian erosional events. As the neptunian dike infillings are mostly associated with the platform drowning events as a result of extensional tectonics, the data obtained in this study suggest that this part of the platform was drowned during the late Coniacian-Santonian and latest Campanian-Maastrichtian as in the northern part of the platform.