Petrogenetic and tectonic controls on magma fertility and the formation of post-subduction porphyry and epithermal mineralization along the late Cenozoic Anatolian Metallogenic Trend, Turkey

A Review of the Dynamics of Subduction Zone Initiation in the Aegean Region

“…The requirement of a stationary trench from 100-45 Ma to allow for the African slab to enter mantle depths (Bonneau, 1982;Stampfli & Borel, 2002;Jolivet et al, 2003;Capitanio et al, 2010) seems unusual in that most of the slab today is characterized by significant slab tear. Sites of slab tear vary in scale from regional to local and include the boundary between the Hellenic and Cyprus arcs (Wortel & Spakman, 1992;Biryol et al, 2011), south of Crete at the Pliny-Strabo Shear Zone (Özbakır et al, 2013), the İzmir-Balıkesir Transfer Zone (e.g., Kaya, 1981;Gessner et al, 2013;Cemen et al, 2014;Ersoy et al, 2014), and beneath the Menderes Massif (Biryol et al, 2011;Rabayrol & Hart, 2021), and the eastern Aegean (Jolivet et al, 2015).…”

“…Numerous examples also suggest significant slab tear across the Aegean and Western Anatolia (e.g., Wortel & Spakman, 1992;Woodside et al, 2000;Biryol et al, 2011;Gessner et al, 2013;Faccenna et al, 2014;Roche et al, 2019;Rabayrol & Hart, 2021). Legrande et al…”

“…The presence of slow velocity anomalies throughout the uppermost mantle beneath Anatolia and very slow velocities beneath eastern Anatolia have been explained by innovative ideas regarding how the mantle and lithosphere behave in terms of mantle upwelling, drip-style lithospheric delamination (Göğüş et al, 2017), or rollback (see discussion in Portner et al, 2018). Tomographic images of both the Hellenic and Cyrus arc have transformed ideas regarding how subducting slabs operate as they enter the deep mantle and their impacts on seismicity and the creation of transfer zones (e.g., Meighan et al, 2013), large volume magmatism (e.g., Cocchi et al, 2017), and controlling ore-forming process and mineral deposits (e.g., de Boorder et al, 1998;Rabayrol et al, 2019;Rabayrol & Hart, 2021). Changes in the subducting slab dynamics significantly affect plate dynamics, including plate motion and mantle dynamics (e.g., Gianni et al, 2019).…”

Metallogenic fingerprint of a metasomatized lithospheric mantle feeding gold endowment in the western Mediterranean basin

“…Melting of fertile SCLM occurred in response to continuous asthenosphere upwelling and continental edge delamination of the Iberian lithosphere since the middle Miocene, driving the generation of oreproductive volcanic suites, progressively shifting from calc-alkaline to alkaline affinities. Such a metallogenic evolution may account for other regional settings related to the emplacement of Cu-Au deposits associated to post-subduction calc-alkaline to alkaline magmas sourced from subduction-metasomatized lithospheric mantle (Richards, 2009;Fiorentini et al, 2018;Holwell et al, 2019;Rabayrol and Hart, 2021).…”

“…During the last decade, an ever-increasing number of works have documented the key-role of mantle magmas in the formation of magmatichydrothermal ores in the crust (e.g., Richards, 2009;Holwell et al, 2019;Blanks et al, 2020;Rabayrol and Hart, 2021). The generation of oreproductive magmas is related to the existence of specific metal-rich sources in the subcontinental lithospheric mantle (SCLM), ranging in size from micrometer-to terrane-scales (McInnes et al, 1999;Griffin et al, 2013;Tassara et al, 2017;Holwell et al, 2019;Wang et al, 2020;Chong et al, 2021).…”