The southern Menderes Massif (western Turkey): geochronology and exhumation history


Bozkurt E. , Satir M.

GEOLOGICAL JOURNAL, vol.35, pp.285-296, 2000 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 35
  • Publication Date: 2000
  • Doi Number: 10.1002/gj.849
  • Title of Journal : GEOLOGICAL JOURNAL
  • Page Numbers: pp.285-296
  • Keywords: western Turkey, Menderes Massif, Rb-Sr geochronology, core complex, shear zone, exhumation, METAMORPHIC CORE COMPLEX, PAN-AFRICAN BASEMENT, SOUTHWESTERN TURKEY, AUGEN GNEISSES, SW TURKEY, TECTONIC SIGNIFICANCE, EVOLUTION, DEFORMATION, EXTENSION, CYCLADES

Abstract

In the southern flank of the Menderes Massif, western Turkey, an E-W-trending quartz-mica vein was recognized in the augen gneisses of the so-called 'core' series. Rb-Sr determinations of two undeformed or slightly deformed mica books from the vein yielded Palaeocene-Early Eocene ages (c. 62-43 Ma) for the vein formation. The new data are interpreted to closely post-date the time of major Barrovian-type High Temperature/Medium pressure (HT/MP) main Menderes metamorphism (MMM) and coeval crustal-scale top-to-the-N-NNE Tertiary deformation that affected the whole Massif. Subsequent cooling occurred in the Middle Eocene (36 +/- 2 Ma Ar-Ar mica ages).