The thermal–mechanical evolution of crustal orogenic belts at convergent plate boundaries: A reappraisal of the orogenic cycle

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

“…Slab roll-back seems to have been active in the eastern Mediterranean region not only since the Oligocene but also during the late Cretaceous, as suggested by the coeval trench retreat and magmatic arc migration in the Balkans and the Pontides (figures 8a-h) [Yılmaz et al, 1997;Ciobanu et al, 2002;Eyüboğlu et al, 2010]. This result does not exclude the possibility that other processes, such as gravitational collapse of thickened crust [Dewey, 1988;Vanderhaeghe, 2012], could have partially controlled these extensional events.…”

New structural data on Late Paleozoic tectonics in the Kyrgyz Tien Shan (Central Asian Orogenic Belt)

“…Some authors consider that it subducted towards the North under the NTS/CTS collided blocks, based on the observed N-S succession of magmatic arc (in the CTS block), accretionary complex (STS), and passive margin (Tarim) units (e.g., Chen et al, 1999;Gao et al, 2009;Liu et al, 2014;Xiao et al, 2014Xiao et al, , 2013. Other authors rather propose a subduction towards the South, beneath the Tarim, based on the presence of subduction-related magmatic rocks on the North Tarim margin, and on numerous evidences of top-to-the-North deformations inside the STS accretionary complex , Ge et al, 2014, 2012Lei et al, 2011;Lin et al, 2013;Wang et al, 2016Wang et al, , 2007a. Most authors finally agree on a closure of the STS Ocean achieved at ~ 310-340 Ma in China and ~ 320 Ma in Kyrgyzstan.…”

“…The Alpine-Himalayan and Andean orogens are considered as typical examples of these two end-members, respectively (Demets et al, 1990;Guillot et al, 2003;Isaks, 1988;Le Fort, 1975). Collisional orogens commonly involve large cumulated strains both on the plate interface and within the colliding plates (e.g., Vanderhaeghe, 2012). They are the result of continental subduction and/or continental underthrusting and shortening, following the closure of an oceanic domain (Chen et al, 1999; A C C E P T E D M A N U S C R I P T Faccenda et al, 2008).…”

CO 2 flow during orogenic gravitational collapse: Syntectonic decarbonation and fluid mixing at the ductile-brittle transition (Lavrion, Greece)

“…Hellenides-Aegean belt represents an emblematic example of construction and collapse of an orogenic belt along the Africa-Eurasia converging plate boundary marked by slab retreat (Jolivet et al, 1994;Gautier et al, 1999;Ring et al, 2010;Vanderhaeghe, 2012;Jolivet et al, 2013;Faccenna et al, 2014). In this context, increase in temperature leads to partial melting of the orogenic root as attested by numerous Miocene plutons (Keay et al, 2001;Iglseder et al, 2009;Liati et al, 2009;Bolhar et al, 2010) and by the Naxos and Paros migmatite domes exhumed in the central part of the Attico-Cycladic Metamorphic Complex, ACMC in a context of gravitational collapse ( Fig.1a) (Vanderhaeghe and Teyssier, 2001;Vanderhaeghe, 2004;Duchêne et al, 2006;Kruckenberg et al, 2011).…”