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  • Turkish Journal of Earth Sciences
  • Volume:13 Issue:3
  • Field, Petrographic and Geochemical Characteristics of the Hamit Alkaline Intrusion in the Central A...

Field, Petrographic and Geochemical Characteristics of the Hamit Alkaline Intrusion in the Central Anatolian Crystalline Complex, Turkey

Authors : NURDANE İLBEYLİ
Pages : 269-286
View : 19 | Download : 7
Publication Date : 0000-00-00
Article Type : Research Paper
Abstract :Hamit plütonu, Orta Anadolu Kristalen Kompleksi insert ignore into journalissuearticles values(OAKK); içerisinde yeralan alkalen intrüzyonlardan biridir. Plüton, nefelin siyenit, psödolösit siyenit, alkali feldspat siyenit ve kuvars siyenitden meydana gelir. Nefelin siyenit ve psödolösit siyenit, foidli mikrosyenitik dayklar taraf›ndan kesilirken, alkali feldspat siyenit ve kuvars siyenit ise aplitik ve silisli dayklar taraf›ndan kesilir. Peralkalen Hamit intrüzif kayaçlar› arazi, petrografik ve jeokimyasal özellikleri ile A-tipi granitlere benzerlik gösterirler. Tüm intrüzif kayaçlar HFSE nazaran, LILE ve LREE ile zenginleflmifltir. Th/Yb–Ta/Yb diyagram›, intrüzif kayaçlar için kaynak bölgesinin, çarp›flma öncesi dalma-batma olay› ile zenginleflmifl manto oldu¤unu göstermektedir. Kompleks de çarp›flma sonras› magmatizman›n bafllang›c› için uygun mekanizmalar, ya metasomatize olmufl litosferin termal s›n›r tabakas›n›n insert ignore into journalissuearticles values(TST); delaminasyonu ya da dalmakta olan levhan›n insert ignore into journalissuearticles values(k›r›l›p?); yok edilmesidir insert ignore into journalissuearticles values(slab breakoff);.
Keywords : Hamit pluton, Central Anatolian Crystalline Complex CACC, syenite, A type granites, post collisional intrusives

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