The Ordovician retroarc foreland basin on the Yangtze Block linked to the final assemblage of Gondwana

<strong>Table S1. Names of sections and boreholes in the Figure 1.</strong> This table comprise names of sections and boreholes which are used in the study and presented by numbers in the Figure 1. <strong>Table S2. Point-counting data of samples for the model sandstone petrology in the Xinjigu section.</strong> We obtain the modal framework grain compositons of 42 samples of medium- to coarse-grained sandstones from the Xinjigu section by point-counting standard thin sections according to the Gazzi-Dickinson method (Ingersoll et al., 1984). Table S2 documents the point-counting data of these sandstone samples. <strong>Table S3. Detrital zircon U-Pb dating from the measured Xinjigu section in the southwestern margin of the Sichuan Basin, western Yangtze region.</strong> We collected four sandstone samples from the lower Ordovician Hungshihyen Formation (XJG-102.4 and XJG-175) and upper Ordovician Taching Formation (XJG-806 and XJG-836) for zircon U-Pb dating. U-Pb geochronology of zircon was conducted by LA-ICPMS at the laboratory of carbonate sedimentary and diagenetic geochemistry, Southwest Petroleum University. Table S3 documents the data of detrital zircon U-Pb dating from these Xinjigu samples.