Petrogenesis of igneous enclaves in plutonic rocks of the Central Anatolian Crystalline Complex, Turkey


INTERNATIONAL GEOLOGY REVIEW, vol.47, no.10, pp.1011-1034, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 47 Issue: 10
  • Publication Date: 2005
  • Doi Number: 10.2747/0020-6814.47.10.1011
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1011-1034
  • Akdeniz University Affiliated: No


The Central Anatolian Crystalline Complex (CACC) contains Paleozoic-Mesozoic, medium-high grade metamorphic rocks overthrust by Upper Cretaceous ophiolitic units and intruded by a number of plutons (around 79.5 to 66.6 Ma). Central Anatolia exhibits good examples of calc-alkaline and alkaline magmatism of similar age in a collision-related tectonic setting. Igneous enclaves are widespread in these calc-alkaline plutonic rocks of the CACC. Two types of igneous enclave have been recognized in the calc-alkaline Behrekdag, Cefalikdag, and Celebi (BCC) (metaluminous I-type ranging front monzodiorite to granite) plutons of Central Anatolia: (I) fine-grained (Type-I); and (2) medium-grained to porphyritic with feldspar megacrysts (Type-II). Most abundant are Type-I enclaves with quartz dioritic to quartz monzodioritic compositions (SiO2 = 55 to 66 wt%) and fine-grained margins indicating chilling against the host rocks. Less common are Type-II enclaves with quartz dioritic to gabbro compositions (SiO2 = 42 to 59 wt%) and cumulate to porphyritic textures, 2 reflecting accumulation of early precipitating phases. Both sets of enclave have mineral phases similar to that, of the host rocks, but, with different mineral proportions.