Geochemistry of vercenik mountain (RIZE) granitoids in Eastern Pontide igneous terrane, Turkey: Constrains on itype, hybride Magmatism
12th International Multidisciplinary Scientific GeoConference and EXPO, SGEM 2012, Varna, Bulgaristan, 17 - 23 Haziran 2012, cilt.1, ss.57-74, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Cilt numarası: 1
- Basıldığı Şehir: Varna
- Basıldığı Ülke: Bulgaristan
- Sayfa Sayıları: ss.57-74
- İstanbul Üniversitesi-Cerrahpaşa Adresli: Evet
Özet
The outcropping granitoids in the Eastern Pontides, ranging from upper Cretaceous to Eocene in age, consisting of various intrusive rock units, have been defined as the composite Kaçkar Batholith. These rock units showing a high variety from granites through syenite and even to gabbros in composition are the plutonic equivalents of the Eastern Pontide Magmatism. This variety in both of the composition and age accompanies with a wide spectrum in genesis, from arc through collision and even to post-collisional within plate magmatism. The subunits of granitoids, The Ortaköy quartz monzonite, Kumlagölü monzogranite and Leǧenderesi micro granite, outcropping in the southern parts of the Kaçkar Batholith, the north of Verçenik Mountain, are the products of a K-rich calcalkaline, mostly metaluminous characterized, excessively continental crust contaminated, I-typed, and hybrid magma source's differentiation. According to some the HFSE, LILE and REE geochemistry data, such a single and hybrid magma is asserted to have a post-collisional genesis related to certain processes, like fractional crystallization and magma mixing. Late and post magmatic stages were dominated by strong hydrothermal activity. Granitoids of the studied area may be related to the igneous activity of the extensional regime in Eocene, after the collision of Anatolide - Pontide platforms, during a term of the well-known arc magmatism. © SGEM2012 All Rights Reserved by the International Multidisciplinary Scientific GeoConference SGEM Published by STEF92 Technology Ltd.