Common Crustal Source for Contrasting Peraluminous Facies in the Early Paleozoic Capillitas Batholith, NW Argentina

Mid-Triassic felsic igneous rocks from the southern Lancangjiang Zone, SW China: Petrogenesis and implications for the evolution of Paleo-Tethys

“…8a), with (Gd/Yb) N values in the range of 0.9 to 3.1, further suggests an absence of garnet in the source and, therefore, middle/upper crustal levels of partial melting. This feature is common to many strongly peraluminous granites (e.g., Rossi et al, 2002).…”

Pampia: A large cratonic block missing in the Rodinia supercontinent

“…Magmatism also grades from more mafic (significant gabbro to granodiorite) in the west to mostly peraluminous to silicic in the east. This is a first-order regional-scale petrological feature of the Ordovician arc, where an I-type dominated plutonic belt along side of an S-type dominated belt were developed (see Toselli et al, 1996;Rossi et al, 2002). Within the Sierras de Famatina, Los Llanos-Chepes-Ulapes, and Valle Fértil-La Huerta, the predominant igneous rocks are calc-alkaline metaluminous I-type granitoids, whereas weakly or strongly peraluminous felsic granitoids appear subordinate (Toselli et al, 1996;Pankhurst et al, 1998;Otamendi et al, 2009).…”

“…Within the Sierras de Famatina, Los Llanos-Chepes-Ulapes, and Valle Fértil-La Huerta, the predominant igneous rocks are calc-alkaline metaluminous I-type granitoids, whereas weakly or strongly peraluminous felsic granitoids appear subordinate (Toselli et al, 1996;Pankhurst et al, 1998;Otamendi et al, 2009). The opposite case occurs in other ranges among which Sierras of Fiambalá, Capillita, Zapata and, in part, Velasco are outstanding examples (Toselli et al, 1996;Rossi et al, 2002).…”

Petrogenesis of the early Paleozoic strongly peraluminous granites in the Western South China Block and its tectonic implications

“…10a), with (Gd/Yb) N values in the range of 0.9-3.1, suggest the absence of fractional crystallization of garnet in their magma source and, therefore, middle/upper crustal levels of partial melting. This feature is also common to most SP granites (e.g., Rossi et al, 2002). Accordingly, the protoliths of metasedimentary source …”