Turkish Journal of Earth Sciences
Abstract
Early to Middle Miocene andesite-dacite porphyries are well exposed to the Pertek area of Tunceli, Eastern Anatolia, and represent an example of adakite-like magma generation in Eastern Anatolia (postsubductional) collisional setting. Mineral associations in these porphyries are composed of plagioclase (oligoclase-andesine-labradorite), amphibole (pargasite-ferropargasite), biotite, rare quartz, K-feldspar, and minor Fe-Ti oxides. Geochemically they are high-K calc-alkaline in nature and characterized by high SiO2 (>62 wt.%), Al2O3 (mostly >16 wt.%), Na2O/K2O ratio (1.3-1.7), and Sr (generally >400 ppm) contents. Volcanic rocks display depletion in HFSEs, Nb, Ta, and Ti, and slight negative Eu anomaly; have low HREEs, Y (
DOI
10.3906/yer-2104-16
Keywords
Adakitic porphyries, hybrid source, continental collision, slab break-off, mantle flow, Pertek-Tunceli-Elazığ, Eastern Anatolia
First Page
948
Last Page
972
Recommended Citation
KÜRÜM, S, ÇOBAN, H, & AYDIN, P (2021). Generation of collision-induced Early to Middle Miocene adakitic magmas in Pertek(Tunceli) area from Eastern Anatolia postsubductional setting, Turkey. Turkish Journal of Earth Sciences 30 (7): 948-972. https://doi.org/10.3906/yer-2104-16
