Surprisingly young Rb/Sr ages from the Simav extensional detachment fault zone, northern Menderes Massif, Turkey

Kinematic reconstructions and magmatic evolution illuminating crustal and mantle dynamics of the eastern Mediterranean region since the late Cretaceous

“…Exhumation of the northern Menderes massif was accommodated by the top-to-the N Simav detachment, which displays a minimum offset of ~50 km up to the late Miocene (i.e. ~8 Ma) [Işik and Tekeli, 2001;Bozkurt et al, 2011]. In the southern Menderes massif, coeval top-to-the S extensional shear has also been recognized and volcanoclastic rocks were unconformably deposited in the early Miocene (figure 4) [Bozkurt and Satır, 2000;Gessner et al, 2001aGessner et al, , 2001b.…”

“…Syntectonic sediments started to be deposited in the hanging wall of these extensional structures [Photiades, 2002;Sánchez-Gómez et al, 2002;Kuhlemann et al, 2004;Lecomte et al, 2010;Laurent et al, 2015]. Further east, the exhumation of the Menderes massif was accommodated in the north by the top-to-the N Simav detachment recording at least ~50 km of displacement [Işik and Tekeli, 2001;Bozkurt et al, 2011] and in the south by a top-to-the S shearing just below the overlying Lycian nappes (figures 10 and 11) [Bozkurt and Satır, 2000;Gessner et al, 2001a;. Volcanoclastic rocks unconformably covering the southern Menderes massif indicate surface exposure of these metamorphic rocks in the early Miocene [Bozkurt and Satır, 2000].…”

“…Surface exposure of the metamorphic rocks then occurred in the late Miocene (figure 11) [Sánchez-Gómez et al, 2002]. Further east, displacement along the Simav detachment continued until ~8 Ma [Bozkurt et al, 2011] and was contemporaneous with the exhumation of the central part of the Menderes massif below the top-to-the NE Alaşehir and the top-to-the S Büyük detachments, which occurred up to the end of the Miocene (figures 10 and 11) [Hetzel et al, 1995a[Hetzel et al, , 1995b; M A N U S C R I P T…”

An extensional and transtensional origin of elongated magmatic domes and localised transfer faults in the northern Menderes metamorphic core complex, western Turkey

“…Extensional allochthons were located on the limbs or synforms of extension-parallel gneiss domes. Such extensional detachment exposures were relatively well described around Kula (Ersoy et al, 2010), Gördes (Bozkurt et al, 2011) and Uşak-Güre basins (Karaoğlu & Helvacı, 2012) (Figure 1). Structural elements in the NE-trending-elongated gneiss domes in the northern Menderes Massif are rather similar to those exposed in the Eğrigöz region.…”

“…Thomson and Ring (2006) also noted that the near concordance of the apatite (U-Th)/He, zircon fission track and apatite fission track ages with the U-Pb zircon ages from the Eğrigöz and Koyunoba plutons can be regarded as a result of very rapid post-emplacement cooling at a very shallow crustal level and pluton updoming likely ceased the activity of SDF. In contrary, Bozkurt, Satır, & Buğdaycıoğlu (2011) argued for the SDF activity between ca. 30 and 8 Ma.…”