Key points are not available for this paper at this time.
Supplemental Text S1: Analytical methods; Figure S1: Plots of variation of selected trace elements vs. Zr to check for element mobility during postmagmatic alteration; Table S1: Zircon U-Pb data sources for Paleozoic to early Mesozoic intrusive rocks in central Inner Mongolia; Tables S2 and S3: Whole-rock major-element and trace-element geochemistry, and Sr-Nd isotopic compositions; Tables S4 and S5: Zircon U-Pb-Hf isotopic data; Table S6: EPMA results of amphibole from the late Carboniferous Mandula intermediate to acidic composite pluton; and Table S7: Summary of crustal thickness calculation in central Inner Mongolia.
Gao et al. (Mon,) studied this question.