Assimilation and fractional crystallization of foid-bearing alkaline rocks:Buzlukdağ intrusives, Central Anatolia, Turkey

Abstract

Introduction Silica-undersaturated alkaline rocks are formed in nearly all tectonic environments with the exception of midocean ridges (Fitton and Upton, 1987). They are formed during oceanic and continental intraplate magmatism and subduction magmatism. Despite this, these rocks comprise volumetrically less amounts of all igneous rocks (Fitton and Upton, 1987). Silica-undersaturated alkaline rocks also point out the areas where crustal thinning is observed in association with continental intraplate magmatism and the partial melting of the deepest and phlogopite-rich part of the subducted plate. However, they attract attention because of their characteristic high concentrations of incompatible, large-ion lithophile elements (LILEs) and rare earth elements (REEs) and their important ore deposits of fluorite, barite, apatite, and diamond (Fitton and Upton, 1987). As a result of a wide range of tectonic occurrences, alkaline igneous rocks are noticed in northwestern Ontario,

The Upper Cretaceous intrusive rocks with extensive crustal contribution in Hacımahmutuşağı Area (Aksaray/Turkey)

“…These Campanian monzonitic rocks are described as sub-alkaline-transitional (e.g., İlbeyli et al 2004) and assumed to be connected to the partial melting of lithospheric mantle with lower and middle crust due to the heat transfer from underplating mafic magma during post-collisional uplifting and extension regime combined with lithospheric delamination, lithospheric thinning and crustal contamination processes (e.g., Köksal et al 2004Köksal et al , 2012İlbeyli et al 2004;Boztuğ et al 2007Boztuğ et al , 2009. The latest phase of the Late-Cretaceous CACC intrusives are presumed to be alkaline rocks formed in advanced stages of the crustal extension with significant mantle component and exemplified by Bayındır-Akpınar (Kaman) alkaline rocks (e.g., Kadıoğlu et al 2006), Buzlukdağ syenitoid (Deniz & Kadıoğlu 2016), İdiş Dağı quartz-syenitoid (Göncüoğlu et al 1997b) and Çamsarı quartz syenitoid (Köksal et al 2004) (Fig. 1).…”

“…Granitoids in the CACC cut the basement and ophiolitic rocks and range from collisional peraluminous and two-mica S-type leucogranites and/or granodiorites (details in Göncüoğlu et al 1993;Yalınız et al 1999), to I-and A-type granitic and monzonitic granitoids (details in Göncüoğlu et al 1993Göncüoğlu et al , 1997bKöksal et al 2012Köksal et al , 2013. A-type quartz-syenite and foid syenites commonly intrude I-type granitoids but form associations in some places in the CACC (e.g., Göncüoğlu et al 1997b;Köksal et al 2004;Deniz & Kadıoğlu 2016).…”

The Potential Usage of Nepheline Syenite in Ceramic Industry: Example of Buzlukdag

“…Migmatit, hornfels ve mermer kontakt metamorfizmanın ürünleri olarak dokanaklarda gözlenmektedir. İnceleme alanının güneyinde azda olsa trakit bileşimindeki kayalar gözlenmiştir (Şekil 2), [36], [37].…”

On the geodynamics of the Alpine collisional granitoids from Central Anatolia: petrology, age and isotopic characteristics of the granitoids of the Ekecikdağ Igneous Association (Aksaray/Turkey)

“…Therefore the petrology of these igneous rocks provides noteworthy information about the crustal evolution of Central Anatolia and its surroundings. There are widespread granitoid intrusions in Central Anatolia, and numerous geological, mineralogical, geochemical and geochronological studies of them have been done (Akıman et al, 1993;Boztuğ, 2000Boztuğ, , 2007cBoztuğ, , 2007bBoztuğ, , 2009Boztuğ, , 2008Boztuğ, Tichomirowa, & Bombach, 2007a;Delibaş, Genç, & De Campos, 2011;Deniz & Kadıoğlu, 2016;Düzgören-Aydın, Malpas, Göncüoğlu, & Erler, 2001;Erler et al, 1991;Göncüoğlu, Köksal, & Floyd, 1997a;Görür, Oktay, Seymen, & Şengör, 1984;İlbeyli, 2005;İlbeyli, Pearce, Thirlwall, & Mitchell, 2004;Kadıoğlu, Ateş, & Güleç, 1998;Kadıoğlu, Dilek, & Foland, 2006;Kadıoğlu, Dilek, Güleç, & Foland, 2003;Köksal, Möller, Göncüoğlu, Frei, & Gerdes, 2012;Köksal, Romer, Göncüoğlu, & Toksoy-Köksal, 2004;Köksal et al, 2013;Yalınız, Aydın, Göncüoğlu, & Parlak, 1999). However, there is no consensus on the petrology of the granitoids and their role in the geodynamic evolution of the region.…”