NEOGENE - QUATERNARY STRATIGRAPHY OF KÝRAZ - BEYDAÐ VICINITY, KÜÇÜK MENDERES GRABEN, WEST ANATOLIA

Authors : Tahir EMRE, Hasan SÖZBİLİR, Nuran GÖKÇEN

Pages : 1-32

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Publication Date : 2006-01-01

Article Type : Research Paper

Abstract :The study area constitutes the eastern end of the Küçük Menderes Graben and is underlain by the Ödemiş-Kiraz Submassif of the Menderes Masif. The Middle Miocene Başova andezite, cut the metamorphic basement and they are calc-alkaline in nature. Basalts and andesites are considered to be the products of the common igneous activity because their trace element compositions. During the Late Middle Miocene time the Kiraz basin way stated to form. In this extensional basin small lakes were formed with algae and ostracoda populations. At the beginning the basin was connected to an open sea but later it was controlled by rivers with alluvial fan deposits. The Suludere formation consist of lacustrine and fluvial sedimentary rocks and yield ostracoda fossils of the Middle to Late Miocene. This formation overlaps the metamorphic basement and the volcanic rocks and unconformably covered by the Aydoğdu formation. This unit consists of alluvial fan deposits which were formed along high angle faults. The Aydoğdu formation includes semiconsolidated poorly sorted and laterally digitated sedimentary rocks. The alluvium covers the youngest depresion. The faults controlled the extensional basin and the geometry of the sediment in fill. These faults are a few kilometers in length and bring the various Neogene units in contact with the older units. The high angle active faults control the present morphology of the area.
Keywords : NEOGENE, QUATERNARY, STRATIGRAPHY