Ages and origins of granitoids from the Kalatag Cu cluster in Eastern Tianshan, NW China: Constraints on Ordovician–Devonian arc evolution and porphyry Cu fertility in the Southern Central Asian orogenic belt

The pre-Carboniferous evolution of the Eastern Tianshan orogen, Xinjiang, NW China, an important Paleozoic tectonic component and Cu metallogenic belt in the southern Central Asian Orogenic Belt (CAOB), is controversial. New zircon UPb ages, whole-rock geochemistry, and zircon LuHf isotope data for three major granitic complexes (i.e., Kalatag, Dongerqu, Xierqu) from the Kalatag Cu cluster of Eastern Tianshan were combined with previous data to...