%0 Journal Article
%T Volcano Stratigraphic Investigation of the Post-Collisional Middle Eocene Magmatism Around £¿zmir-Ankara-Erzincan Suture Zone (NE, Turkey)
%A G£¿nen£¿ G£¿£¿mengil
%J -
%D 2018
%X The obliteration of the Neo-Tethyan Ocean along the northern part of Turkey leads the development of the £¿zmir-Ankara-Erzincan suture zone (IAESZ). After the suturing stage; extension and magmatism concomitantly developed on the both sides and along the IAESZ during the middle Eocene. During this stage, the areas confining to Almus, Y£¿ld£¿zeli, and Y£¿ld£¿zda£¿ regions have experienced a severe magmatic activity. Middle Eocene magmatism in Almus and Y£¿ld£¿zeli areas are represented by the volcano-sedimentary successions. Besides, in Y£¿ld£¿zda£¿ region, gabbroic and dioritic intrusives are the dominant manifestations of magmatism. The volcano-sedimentary successions from Almus and Y£¿ld£¿zeli areas represented by shallow marine sedimentary units at the lower parts and lava flows and volcanoclastic units at the middle to upper parts. Eight volcano-sedimentary sections from Almus and Y£¿ld£¿zeli measured to demonstrate the evolution of the magmatic units developed coevally along the both sides of the suture zone. In both regions; three different volcanic episodes are differentiated based on stratigraphy. First episode includes amphibole-basaltic andesite, andesite, and dacite. Second episode contains basalt and pyroxene-basaltic andesite lavas and third episode represented by trachyte and trachyandesite dikes and stocks. The field data from the all regions demonstrated that middle Eocene magmatic units along the post-collision zone concominantly developed in a wide area and triggering of the magmatism controlled by the region-scale delamination and/or lithospheric removal processes
%K Izmir-Ankara-Erzincan suture zone
%K middle Eocene
%K post-collisional magmatism
%K Volcano-stratigraphy
%U http://dergipark.org.tr/tjb/issue/36499/414013