The trace element compositions of S-type granites: evidence for disequilibrium melting and accessory phase entrainment in the source

Peritectic phase entrainment and magma mixing in the late Miocene Elba Island laccolith–pluton–dyke complex (Italy)

“…A possible explanation for the origin of this correlation is that, due to their small crystal size and availability at the sites of melting, zircons commonly hosted within reactant phases in the pre-anatectic sources are co-entrained together with the peritectic assemblage. Then, zircon partially dissolves until Zr is saturated in the melt as predicted by the appropriate solubility equation (Villaros et al, 2009a;Watson and Harrison, 1983). Although scarce, inherited zircons in the Monte Capanne pluton (Gagnevin et al, 2010) represent a reliable textural evidence of this process.…”

Geochronology, geochemistry, and isotope compositions of Piaochi S-type granitic intrusion in the Qinling orogen, central China: Petrogenesis and tectonic significance

“…Stevens et al, 2007;Villaros et al, 2009). Even though evolving extensive fractionation (Champion and Bultitude, 2013) or subsequent metamorphism (Fowler et al, 2013), S-type granites are believed to largely reflect their source nature, particularly when these were compared with experimental results (e.g.…”

Sources of post-orogenic calcalkaline magmas: The Arrochar and Garabal Hill–Glen Fyne complexes, Scotland

“…The average is 74 wt% SiO 2 , so this is the assumed value for a melt derived from the analysed Dalradian schist, for example. A compilation of compositional data for 235 post-Archaean S-type granitic rocks with SiO 2 between 72 and 76 wt% (Villaros, 2009;Villaros et al, 2009) Apart from the abovementioned difficulties in fitting the geochemical data to an assimilation model, recent work by Glazner (2007) has shown that bulk assimilation processes (both reactive and mechanical) are severely limited by the energy required to accomplish the hybridisation. Glazner demonstrated that hybrids could be produced with appropriate geochemical and isotopic characteristics.…”