Multistage growth of Fe–Mg–carpholite and Fe–Mg–chloritoid, from field evidence to thermodynamic modelling

Sedimentologic to metamorphic processes recorded in the high-pressure/low-temperature Mesozoic Rosetta Marble of Anatolia

“…18c). The calculated P-T lines match well with previous P-T estimates for carpholite-bearing rocks of the Ören Unit and overlap the P-T path calculated for the eastern and western Afyon zone by Pourteau et al (2014). Rimmelé et al (2003) analysed Rosetta Marble from Fesleğen village with X-ray diffractrometry to investigate the possible presence of aragonite that had not been detected using optical microscopy.…”

Neotethyan closure history of western Anatolia: a geodynamic discussion

“…4), which was interpreted as a rift-to-passive margin sequence (Okay et al 1996;Candan et al 2005;Göncüoğlu 2011;. Blueschist-facies metamorphism (8-11 kbar/250-420 °C; Pourteau et al 2014), testified by sodic amphibole in mafic rocks, Fe-Mg-carpholite in pelitic rocks Pourteau et al 2010) and aragonite relics in pelagic carbonate (Scheffler et al submitted), was followed by widespread greenschist-facies retrogression around 67-62 Ma (Fig. 3) .…”

A long-lived Late Cretaceous–early Eocene extensional province in Anatolia? Structural evidence from the Ivriz Detachment, southern central Turkey

“…Our field and thin-section observations show that ductile deformation related to the detachment largely occurred under lower blueschist to sub-greenschist facies conditions. The presence of glaucophane-epidote bearing rocks within the Afyon Zone (Blumenthal, 1956) and the estimated P-T conditions of the carpholite-chloritoid bearing rocks of the rest of Afyon Zone (10 kbar/375 • C; Pourteau et al, 2014) suggest that not all exhumation of the Afyon Zone can be ascribed to the activity of the Ivriz Detachment. The first phase of exhumation brought these rocks from blueschist to lower blueschist-facies conditions, perhaps as a result of channelized exhumation along the subduction zone (e.g., Agard et al, 2010;Jolivet et al, 2003).…”

“…The amount of exhumation is estimated based on thin-section observations that suggest a temperature drop from ∼350 • C to <200 • C during detachment activity. Since the rocks in the foot wall were metamorphosed at some 10-12 kbar (Pourteau et al, 2014), exhumation amounted to some 40 km between Late Cretaceous and early Eocene time. Our new 50.27 ± 0.22 Ma crystallization age of the Horoz intrusion is comparable to the 50.6 ± 2.4 to 49.1 ± 1.0 Ma age (Parlak et al, 2013), but younger than the unpublished age of 56 Ma quoted by Kadioglu and Dilek (2010).…”

“…Incipient blueschist-facies conditions have been reported both in glaucophane-bearing Pan-African metagabbro and in its sedimentary cover (Fe-Mg carpholite-bearing rocks). The pressure-temperature conditions were estimated at 10 kbar/375 • C (Pourteau et al, 2014 (Özdamar et al, 2013;Pourteau et al, 2013). In western Anatolia, the Afyon Zone is unconformably overlain by late Paleocene-early Eocene shallow marine sedimentary rocks (Candan et al, 2005).…”