Geochemistry and tectonic significance of the ophiolitic rocks of the Yarpuz-Kaypak (Amanoslar, Osmaniye) area


RIZAOĞLU T., BAĞCI U., PARLAK O.

BULLETIN OF THE MINERAL RESEARCH AND EXPLORATION, cilt.159, ss.99-116, 2019 (ESCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 159
  • Basım Tarihi: 2019
  • Doi Numarası: 10.19111/bulletinofmre.501393
  • Dergi Adı: BULLETIN OF THE MINERAL RESEARCH AND EXPLORATION
  • Sayfa Sayıları: ss.99-116

Özet

Yarpuz-Kaypak (Osmaniye) region, located in Amanos Mountains, contains harzburgitic tectonites and mafic cumulates. The tectonites are represented by serpantinized harzburgites, whereas the cumulates are characterized by gabbronorite and gabbro compositions. The crystallization order within the cumulates is clinopyroxene, orthopyroxene plagioclase and amphibole. The major element compositions of the tectonites and cumulate rocks are consistent with formation in an arc-related tectonic setting. Trace element concentrations of these rocks exhibit large ion litophile element enrichments. Both geochemical and petrographic evidence suggest that the tectonite and cumulate rocks from the Yarpuz-Kaypak (Osmaniye) region represent the remnants of an oceanic lithosphere that formed in a supra-subduction zone tectonic setting during the closure of the Southern Neotethyan ocean and emplaced onto the northern margin of the Arabian platform in Late Cretaceous.