Ostracod fauna and environmental features of tertiary (Paleogene-Neogene) deposits in Yedikule-Istanbul region

This study consists of micro paleontological assessments of samples taken from drills carried out around Yedikule area for the micro zonation study made by the Istanbul Municipality in European side of Istanbul province. The investigation was performed on core samples in three drill wells excavated within Yedikule settlement area. Very well preserved ostracod fauna and micro mollusks at some levels were obtained from claystone, clayey limestone, limestone, fossilliferous sandstone, blackish-green and organic clays and marl layers. With these three drill core samples in which the microfauna occurs, the age of the succession was determined as Tertiary (Late Miocene-Early Oligocene) with microfauna