Postcollisional potassic and ultrapotassic rocks in southern Tibet: Mantle and crustal origins in response to India–Asia collision and convergence

The formation of Qulong adakites and their relationship with porphyry copper deposit: Geochemical constraints

“…12. Also plotted are literature data for Jurassic porphyries from Qulong , Cretaceous adakites from Mamen ), Lizizong volcanics (Mo et al, 2008) and Miocene adakites Hou et al, 2004bHou et al, , 2013Qin et al, 2014;Xu et al, 2010) and fields of Indus-Yalung ophiolites (Miller et (Zhu et al, 2012a) and ultrapotassic rocks from south Tibet (Gao et al, 2007a;Liu et al, 2014;Miller et al, 1999;Zhao et al, 2009). The Nd-isotope model ages (T DM ) of the Qulong adakites range from 0.62 to 0.71 Ga (Table 4).…”

Eocene magmatic processes and crustal thickening in southern Tibet: Insights from strongly fractionated ca. 43Ma granites in the western Gangdese Batholith

“…Liu et al, 2014). The first mechanism cannot explain why the coeval gabbro (44.8 Ma, our unpublished data) from Amuxiong, approximately 50 km east of Dajia, shows large positive zircon ε Hf (t) (mostly +5 to +10) (Fig.…”

Geochronology, geochemistry and geodynamic implications of the Late Mesozoic volcanic rocks in the southern Great Xing’an Mountains, NE China

“…This genetic model has been applied to shoshonitic series rocks associated with ultrapotassic rocks, high-K calc-alkaline rocks, or even to calc-alkaline rocks (e.g., Duggen et al, 2005;Altherr et al, 2008;Avanzinelli et al, 2009;Conticelli et al, 2009a;Yang et al, 2012). On the other hand, K-rich shoshonitic magma also can be derived from partial melting of the thickened lower crust, following underplating by mantlederived magma in a post-collisional extension setting (Kuster and Harms, 1998;Jiang et al, 2002;Campbell et al, 2014;Liu et al, 2014).…”