%0 Journal Article
%T Comparison of The Geochemical Characteristics of Late Cretaceous Alkalen Volcanic Rocks From The Southern Border of Sakarya Zone
%A Emre AYDIN£¿AKIR
%J -
%D 2019
%X Alkaline volcanics exposed at similar stratigraphic levels in Upper Cretaceous at Bayburt, Amasya-G¨¹m¨¹£¿hac£¿k£¿y and Ankara-Kalecik locations along the southern boundary of the Sakarya Zone provide macroscopically two different lithologies which are containing large pyroxene porphyries and large analcimized leucite porphyries. These rocks formed as a result of the low-grade partial melting of the metasomatized phlogopite-rich mantle rocks, which resulted in the step subduction angle of the aged oceanic crust before the collision. In the course of following their cases, in the middle / shallow depths of the crust, in the magma chambers they underwent differentiation and reached two different lithologies
%K Alkalen volkanizma
%K Analsimle£¿mi£¿ l£¿sit
%K Sakarya Zonu
%K ¨¹st Kretase
%U http://dergipark.org.tr/gumusfenbil/issue/42325/400097