Supporting Information

Supplementary information includes supplementary Figures S1-S2 and Tables S1–S8. Figure S1 is the micrographs of sandstone composition types and features. Figure S2 is the cathodoluminescence images of representative zircon grains. Table S1–S2 are raw grain counts and recalculated detrital modes for the Late Cretaceous sandstone of Enshi, Jianshi, Laifeng, and Qianjiang basins. Table S3 is relative abundance (expressed as frequency %) and provenance-sensitive index ratios of heavy minerals. Table S4–S8 are LA-ICPMS zircon U–Pb ages of Enshi, Jianshi, Laifeng, and Qianjiang basins.本补充材料包含补充图S1~S2与补充表S1~S8。补充图S1为砂岩组分类型与特征的显微图像；补充图S2为典型锆石颗粒的阴极发光（cathodoluminescence）图像。补充表S1~S2为恩施、建始、来凤及黔江盆地晚白垩世砂岩的原始颗粒计数数据与经重新计算的碎屑模式参数；补充表S3为重矿物的相对丰度（以频率百分比表示）及物源敏感指数比值；补充表S4~S8为恩施、建始、来凤及黔江盆地的激光剥蚀电感耦合等离子体质谱（LA-ICPMS）锆石U-Pb年龄数据。