Sources and petrogenesis of Late Triassic Zhiduo volcanics in the northeast Tibet: Implications for tectonic evolution of the western Jinsha Paleo-Tethys Ocean

The western Jinsha suture, representing a branch of the Paleo-Tethys, makes the junction between the Songpan-Ganzi Complex and the North Qiangtang Block (NQB). However, the Triassic tectonic evolution of the western Jinsha Paleo-Tethys Ocean is poorly constrained. This paper shows new LA–ICP–MS zircon U-Pb geochronology, major and trace elements, and Sr–Nd–Hf isotopic compositions of the Zhiduo dacitic volcanic rocks in the northern margin of...