International Journal of Earth Sciences

, Volume 95, Issue 4, pp 609–627 | Cite as

Geodynamic significance of granitoid magmatism in the southeast Anatolian orogen: geochemical and geochronogical evidence from Göksun–Afşin (Kahramanmaraş, Turkey) region

  • Osman ParlakEmail author
Original Paper


In southeast Anatolia, there are number of tectonomagmatic units in the Kahramanmaraş–Malatya–Elazığ region that are important in understanding the geological evolution of the southeast Anatolian orogenic belt during the Late Cretaceous. These are (a) metamorphic massifs, (b) ophiolites, (c) ophiolite-related metamorphics and (d) granitoids. The granitoids (i.e. Göksun–Afşin in Kahramanmaraş, Doğanşehir in Malatya and Baskil in Elazığ) intrude all the former units in a NE–SW trending direction. The granitoid in Göksun–Afşin (Kahramanmaraş) region is mainly composed of granodioritic and granitic in composition. The granodiorite contains a number of amphibole-bearing mafic microgranular enclaves of different sizes, whereas the granite is intruded by numerous aplitic dikes. The granitoid rocks have typical calcalkaline geochemical features. The REE- and Ocean ridge granite-normalized multi-element patterns and tectonomagmatic discrimination diagrams, as well as biotite geochemistry suggest that the granitoids were formed in a volcanic arc setting. The K–Ar geochronology of the granitoid rocks yielded ages ranging from 85.76±3.17 to 77.49±1.91 Ma. The field, geochemical and geochronological data suggest the following Late Cretaceous tectonomagmatic scenario for southeast Anatolia. The ophiolites were formed in a suprasubduction zone tectonic setting whereas the ophiolite-related metamorphic rocks formed either during the initiation of intraoceanic subduction or late-thrusting (∼90 Ma). These units were then overthrust by the Malatya–Keban platform during the progressive elimination of the southern Neotethys. Thrusting of the Malatya–Keban platform over the ophiolites and related metamorphic rocks was followed by the intrusion of the granitoids (88–85 Ma) along the Tauride active continental margin in the southern Neotethys.


Southeast Anatolia Volcanic arc Granitoids Active margin Late Cretaceous 



This research was partly supported by TÜBİTAK (Scientific and Technical Research Council of Turkey, Project Number: YDABÇAG-199Y011) and Division of the Çukurova University Scientific Research Projects (MMF2001.13). Michel Delaloye is thanked for allowing me to use XRF and K–Ar facilities in the Mineralogy Department at Geneva University (Switzerland). Volker Höck is thanked for free access to microprobe facilities in the Geology Department at Salzburg University (Austria). Utku Bağcı and Tamer Rızaoğlu are thanked for their field assistancy. Osman Parlak also acknowledges the financial support from the Turkish Academy of Sciences, in the frame of the Young Scientist Award Program (TÜBA-GEBİP). Nurdane İlbeyli and Yann Rolland are thanked for reviewing the first version of the manuscript. Thanks are due to Prof. Alastair Robertson who reviewed the revised version of the present manuscript.


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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  1. 1.Mühendislik-Mimarlık Fakültesi, Jeoloji Mühendisliği BölümüÇukurova ÜniversitesiAdanaTurkey

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