1. Relative contributions of crust and mantle to generation of Campanian high-K calc-alkaline I-type granitoids in a subduction setting, with special reference to the HarAit Pluton, Eastern Turkey
- Author
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Karsli, Orhan, Dokuz, Abdurrahman, Uysal, Adegbrahim, Aydin, Faruk, Chen, Bin, Kandemir, Raif, and Wijbrans, Jan
- Subjects
Earth -- Mantle ,Granite ,Porphyry ,Earth sciences - Abstract
Byline: Orhan Karsli (1), Abdurrahman Dokuz (1), Adegbrahim Uysal (2), Faruk Aydin (3), Bin Chen (4), Raif Kandemir (1), Jan Wijbrans (5) Keywords: Eastern Turkey; High-K calc-alkaline granitoids; Lower crustal melting; Subduction setting; Back-arc extension; Radiogenic isotopes Abstract: We present elemental and Sr--Nd--Pb isotopic data for the magmatic suite (~79 Ma) of the HarAit pluton, from the Eastern Pontides (NE Turkey), with the aim of determining its magma source and geodynamic evolution. The pluton comprises granite, granodiorite, tonalite and minor diorite (SiO.sub.2 = 59.43--76.95 wt%), with only minor gabbroic diorite mafic microgranular enclaves in composition (SiO.sub.2 = 54.95--56.32 wt%), and exhibits low Mg ( Author Affiliation: (1) Department of Geological Engineering, GumuAhane University, 29000, GumuAhane, Turkey (2) Department of Geological Engineering, Karadeniz Technical University, 61100, Trabzon, Turkey (3) Department of Geological Engineering, Nigde University, 51200, Nigde, Turkey (4) School of Earth and Space Sciences, Peking University, Beijing, 100871, China (5) Laboratory of Isotope Geology, Vrije University, De Boelelaan 1085, 1081 HV, Amsterdam, The Netherlands Article History: Registration Date: 11/01/2010 Received Date: 15/05/2009 Accepted Date: 11/01/2010 Online Date: 02/02/2010 Article note: Communicated by G. Moore. Electronic supplementary material The online version of this article (doi: 10.1007/s00410-010-0489-z) contains supplementary material, which is available to authorized users.
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- 2010