Geochemistry of the Middle Miocene Collision-Related Yamadaği ( Eastern Anatolia) Calc-Alkaline Volcanics, Turkey

Authors

TANER EKİCİ
MUSA ALPASLAN
OSMAN PARLAK
ALİ UÇURUM

Abstract

Major, trace element and K-Ar age determinations are reported for a suite from the Yamadağı volcanics in the Eastern Anatolia. The exposed rocks mainly consist of medium-potassium calc-alkaline basaltic andesites, andesites and dacites. Petrographical data exhibit disequilibrium mineral textures, such as resorption of the ferromagnesian phases, clinopyroxene-mantled orthopyroxene, and sieve-textured plagioclases. The Yamadağı volcanics have a calk-alkaline character, and trace element characteristics exhibit that the volcanics resemble subduction zone volcanics and/or volcanics assimilated by continental crust. K/Ar age determinations show that the Yamadağı volcanics were formed during the 12 ± 0.5 - 15 ± 0.5 Ma time interval. Geochemical characteristics of these volcanics can be attributed to complex petrogenetic processes, including magma mixing and crustal assimilation along with fractional crystallization.

DOI

10.3906/yer-0712-1

Keywords

calc alkaline, volcanics, collision, Eastern Anatolia, Turkey

First Page

511

Last Page

528

Recommended Citation

EKİCİ, TANER; ALPASLAN, MUSA; PARLAK, OSMAN; and UÇURUM, ALİ (2009) "Geochemistry of the Middle Miocene Collision-Related Yamadaği ( Eastern Anatolia) Calc-Alkaline Volcanics, Turkey," Turkish Journal of Earth Sciences: Vol. 18: No. 4, Article 2. https://doi.org/10.3906/yer-0712-1
Available at: https://journals.tubitak.gov.tr/earth/vol18/iss4/2