Field, petrographic and geochemical characteristics of the Hamit alkaline intrusion in the Central Anatolian Crystalline Complex, Turkey

İLBEYLİ N.

TURKISH JOURNAL OF EARTH SCIENCES, vol.13, no.3, pp.269-286, 2004 (SCI-Expanded, Scopus, TRDizin) identifier identifier

  • Publication Type: Article / Article
  • Volume: 13 Issue: 3
  • Publication Date: 2004
  • Journal Name: TURKISH JOURNAL OF EARTH SCIENCES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.269-286
  • Keywords: Hamit pluton, Central Anatolian Crystalline Complex (CACC), syenite, A-type granites, post-collisional intrusives, EVOLUTION, COLLISION, MAGMATISM, GRANITOIDS, VOLCANISM, SETTINGS
  • Akdeniz University Affiliated: No

Abstract

The Hamit pluton is one of the alkaline intrusions in the Central Anatolian Crystalline Complex (CACC). The pluton consists of nepheline syenite, pseudoleucite syenite, alkali-feldspar syenite and quartz syenite. The nepheline syenite and pseudoleucite syenite are cut by foid-bearing microsyenitic dykes, whereas the alkali-feldspar syenite and quartz syenite are cut by aplitic and silicic dykes. The predominantly peralkaline Hamit intrusive rocks possess field, petrographic and geochemical characteristics comparable to A-type granites. All intrusive rocks of this pluton show enrichment in LILE and LREE relative to HFSE. The Th/Yb versus Ta/Yb plot suggests that the intrusive rocks formed from an enriched mantle source region carrying a subduction component inherited from pre-collision subduction events.