Geochemical constraints on the genesis of the Günyüzü pluton, northwest Anatolia, Turkey

Kibici Y., İLBEYLİ N., Yildiz A., Bagci M.

International Geology Review, cilt.50, sa.10, ss.931-947, 2008 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 50 Sayı: 10
  • Basım Tarihi: 2008
  • Doi Numarası: 10.2747/0020-6814.50.10.931
  • Dergi Adı: International Geology Review
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.931-947
  • Hatay Mustafa Kemal Üniversitesi Adresli: Hayır

Özet

The Tavsanli Zone in northwest Turkey is intruded by many Late Cretaceous to Eocene (91-45 Ma) calc-alkaline granitoids, of which the Günyüzü pluton in the Eskisehir region is the least studied. The Günyüzü rocks are high-K, calc-alkaline (I-type) intrusions, and are comprised of diorite, granodiorite, granite, and granite porphyry. Typical minerals are plagioclase, K-feldspar, quartz, biotite, hornblende and Fe-Ti oxides. Chondrite-normalized REE patterns for the Günyüzü rocks are moderately fractionated and have small negative Eu anomalies. They are enriched in LILE and LREE relative to HFSE, showing characteristics of arc-related granitoids. Low values of molar K2O/Na2O, Al2O3/(FeO+MgO+TiO2), and (Na2O+K2O)/(FeO+MgO+TiO2) ratios demonstrate that the Günyüzü magma(s) were produced from mafic lower crustal rocks. Copyright © 2008 by Bellwether Publishing, Ltd. All rights reserved.