JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING, vol.53, no.1-2, pp.123-134, 2006 (SCI-Expanded)
Units of Paleozoic, Mesozoic and Cenozoic age are exposed in the study area which extends along the Sakarya River by the Sarycakaya town of Eskibehir at west and Nallyhan district of Ankara at East. Paleozoic is represented with metamorphites consisting of glaucophane schist, muscovite schist and marble alternations and granites cutting them. The Mesozoic composing of Jurassic-Cretaceous Sogukcam limestones at the northern part of the area is in tectonic contact with other units. The Tertiary is characterized by the Paleocene-Eocene Kizilcay Group which consists of the Beykoy, Camalan and Lacin Formations. The Camalan Formation is composed of sandstone, limestone, oil shale and locally coal bands. In the area, as a result of intense tectonic activity by the late Eocene, sedimentary sequence that compacted within the Paleozoic metamorphic rocks were folded and fractured.