Supplementary material for the paper: The Late Paleozoic tectonic evolution of the Paleo-Asian Ocean in the northern Alxa Block, (NW China)

Supplementary Materials include: Supplementary text: LA-ICP-MS Zircon U–Pb dating and whole-rock major and trace element Analytical methods Table S1: LA-ICP-MS zircon U–Pb isotopic dating results Table S2: whole-rock major and trace element and Sr-Nd isotopic compositions of volcanic rocks Table S3: References for geochronological data in Langshan (Fig. 2). Supplementary figure: Cumulative probability curves of measured crystallization ages for detrital zircons grains relative to the depositional age of samples from the Permian Dahongshan Formation.