Temporal, geochemical and geodynamic evolution of the Late Cretaceous subduction zone volcanism in the eastern Sakarya Zone, NE Turkey: Implications for mantle-crust interaction in an arc setting
JOURNAL OF ASIAN EARTH SCIENCES, vol.192, 2020 (Journal Indexed in SCI)
Article / Article
Title of Journal :
JOURNAL OF ASIAN EARTH SCIENCES
Late Cretaceous, Subduction, Volcanism, Mantle-crust interaction, Sakarya Zone, Eastern Pontides, NE Turkey, PONTIDE OROGENIC BELT, I-TYPE GRANITOIDS, CONTINENTAL-CRUST, ISOTOPIC CHARACTERISTICS, NEOTETHYAN CONVERGENCE, GUMUSHANE AREA, ARTVIN AREA, ROCKS, MAGMATISM, PETROGENESIS
The Late Cretaceous Artvin volcanic rocks (LCAVs) from the eastern Sakarya zone (ESZ) of NE Turkey are composed of mafic/basaltic (S1-catak and S2-caglayan) and felsic/acidic (S1-Kizilkaya and S2-Tirebolu) rock types that occurred in two successive stages: (i) first stage (S1: Turonian-Early Santonian) and (ii) second stage (S2: Late Santonian-Campanian). Clinopyroxene thermobarometric results point that the S2-caglayan basaltic rocks have crystallised at higher temperatures and under deeper crustal conditions than those of the S1-catak basaltic rocks.