Sources of Phanerozoic granitoids in the transect Bayanhongor–Ulaan Baatar, Mongolia: geochemical and Nd isotopic evidence, and implications for Phanerozoic crustal growth

Origin and hydrothermal alteration of rare-metal granites in the Al-Hamra area, northeastern Arabian Shield, Saudi Arabia

“…Numerous Sm-Nd and Rb-Sr isotope data obtained during the last decade suggest that many silicic magmas of this type were produced from sources in which mantle-derived material was dominant (e.g. Turner et al 1992;Whalen et al 1996;Jahn et al 2000;Bonin 2004;Jahn et al 2004). The isotope data on the investigated granites support this conclusion.…”

Geochemistry, zircon U–Pb ages and Hf isotopes of the Paleozoic volcanic rocks in the northwestern Chinese Altai: Petrogenesis and tectonic implications

“…Long-lasting accretionary process results in mélanges, disorder of regional stratigraphy and development of thrust faults, while subduction of oceanic crust brings crustal materials into mantle and enhances intensive crust-mantle interactions (Sengör and Natal'in, 1996). Igneous rocks are chemically less susceptible to low grade metamorphism and therefore useful in understanding the growth of juvenile crust and recycling of old crustal materials in accretionary orogen, especially in the CAOB (Jahn et al, 2000(Jahn et al, , 2004Safonova et al, 2004;Dobretsov et al, 2004;Kröner et al, 2008;Demoux et al, 2009). In the past decade, granitoids in the CAOB has been extensively studied to explore crustal growth in the Central Asia.…”

“…(e.g. Windley et al, 2002;Jahn et al, 2004;Wang et al, 2006Wang et al, , 2009Yuan et al, 2007;Tong et al, 2007;Briggs et al, 2007).…”

“…In the Chinese Altai, Paleozoic granitoids and sedimentary rocks are widely exposed (Wang, 1983;Peng, 1989;BGMRX, 1993;Windley et al, 2002;Yuan et al, 2007;Long et al, 2007Long et al, , 2008aSun et al, 2008Sun et al, , 2009. Previous geochemical studies have revealed that the widespread Paleozoic granitoids display high e Hf (t) and e Nd (t) values, indicating significant addition of juvenile materials to the source of the magmas (Jahn et al, 2004;Wang et al, 2006;Yuan et al, 2007;Sun et al, 2008Sun et al, , 2009). However, geological processes for generating the voluminous granitoids and crust-mantle interaction were poorly constrained, and a well…”

Middle Jurassic MORB-type gabbro, high-Mg diorite, calc-alkaline diorite and granodiorite in the Ando area, central Tibet: Evidence for a slab roll-back of the Bangong-Nujiang Ocean

“…The growth and reworking of continental crust is commonly triggered by the underplating of mantle magmas (Chen and Arakawa, 2005;Jahn et al, 2004). In subdution zones, the mantle rocks and the coeval granites have therefore recorded abundant information regarding the crustal growth and differentiation of continental crust (Kamei et al, 2004;Karsli et al, 2010).…”