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

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).


OZCAN, E (Wiley, 1993-12-01)
In south-eastern Turkey, a transgressive phase with a rich benthic foraminiferal association followed the Late Cretaceous emplacement of nappes onto the passive northern margin of the Arabian Platform. At the base, this transgressive sequence is represented by coarse clastics and local carbonate intercalations of the Antak Formation and the overlying, shallow water friable sands and carbonate facies of the Besni Formation, which is characterized by a sudden proliferation of benthic foraminifera, rudists and...
Vertical-axis rotations accommodated along the Mid-Cycladic lineament on Paros Island in the extensional heart of the Aegean orocline (Greece)
Malandri, Christina; Soukis, Konstantinos; Maffione, Marco; Ozkaptan, Murat; Vassilakis, Emmanuel; Lozios, Stelios; van Hinsbergen, Douwe J. J. (GeoScienceWorld, 2017-02-01)
The Aegean-west Anatolian orocline formed due to Neogene opposite rotations of its western and eastern limbs during opening of the Aegean back-arc basin. Stretching lineations in exhumed metamorphic complexes in this basin mimic the regional vertical-axis rotation patterns and suggest that the oppositely rotating domains are sharply bounded along a Mid-Cycladic lineament, the tectonic nature of which is enigmatic. Some have proposed this lineament to be an extensional fault accommodating orogen-parallel ext...
Tectonic evolution of the Gediz Graben: field evidence for an episodic, two-stage extension in western Turkey
Bozkurt, Erdin (Cambridge University Press (CUP), 2004-01-01)
Western Turkey is one of the most spectacular regions of widespread active continental extension in the world. The most prominent structures of this region are E-W-trending grabens (e.g. Gediz and Buyuk Menderes grabens) and intervening horsts, exposing the Menderes Massif. This paper documents the result of a recent field campaign (field geological mapping and structural analysis) along the southern margin of the modern Gediz Graben of Pliocene (similar to 5 Ma) age. This work provides field evidence that ...
The Upper Cretaceous intrusive rocks with extensive crustal contribution in Hacimahmutusagi Area (Aksaray/Turkey)
Köksal, Serhat (Central Library of the Slovak Academy of Sciences, 2019-06-01)
The Hacimahmutusagi area (Aksaray/Turkey) is located in the western part of the Central Anatolian Crystalline Complex (CACC). Gneiss and marble compose the basement units, while intrusive rocks are gabbros and granitoids. The pegmatitic hornblende gabbros contain pegmatitic to fine-grained hornblendes, plagioclase, clinopyroxene, and accessory opaque minerals. The fine-grained gabbros, on the other hand, are composed of plagioclase, hornblende, and biotite as major components whereas the apatite and opaque ...
Rapid cooling history of a Neotethyan ophiolite: Evidence for contemporaneous subduction initiation and metamorphic sole formation
PARLAK, OSMAN; Dunkl, Istvan; KARAOĞLAN, FATİH; Kusky, Timothy M.; Zhang, Chao; Wang, Lu; Koepke, Juergen; Billor, Zeki; Hames, Willis E.; ŞİMŞEK, EMRAH; Simsek, Gokce; ŞİMŞEK, TUĞÇE; Ozturk, Selena Ezgi (Geological Society of America, 2019-11-01)
The Beywhir-Hoyran Nappes, including Mesozoic carbonate platform rocks, deepsea sediments, and ophiolite-related units, crop out extensively on the western limb of the Isparta Angle in the Central Taurides, Turkey. The ophiolite-related rocks are represented by variably serpentinized harzburgitic mantle tectonites, tectonically underlain by a subophiolitic metamorphic sole and melange. The harzburgitic mantle tectonites and metamorphic sole are intruded by undeformed isolated dikes. Protoliths of the metamo...
Citation Formats
E. Bozkurt, “The southern Menderes Massif (western Turkey): geochronology and exhumation history,” GEOLOGICAL JOURNAL, pp. 285–296, 2000, Accessed: 00, 2020. [Online]. Available: