Abstract Neoproterozoic paleogeography of the Cathaysia Block of South China is directly linked to the formation of Rodinia, its break-up, and the subsequent amalgamation of Gondwana. Two diamictite units occur in the Neoproterozoic sedimentary successions on the western margin of Cathaysia Block. In combination with our detrital zircon U-Pb dating results and corrected chemical weathering index data (CIAcorr), these units coincide with the global Sturtian and Marinoan glaciations. Late Tonian to early Ediacaran sedimentary rocks from western Cathaysia contain abundant late Mesoproterozoic to early Neoproterozoic (1150–870 Ma) and some mid-Neoproterozoic (800–720) detrital zircons. Paleocurrent data indicate sediment transport to the northwest. The timing and character of the ages of detrital zircons match the records of North India and East Antarctica, indicating that the Cathaysia Block received detritus from Gondwana. Thus, South China lay adjacent to northern Gondwana since at least 720 Ma, and possibly considerably earlier.

中文翻译：

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从托尼阶晚期到埃迪卡拉纪连接华南与北印度：来自华夏地块的约束

摘要 华南华夏地块的新元古代古地理与 Rodinia 的形成、它的解体以及随后的 Gondwana 的合并直接相关。华夏地块西缘新元古代沉积层序中出现两个混叠岩单元。结合我们的碎屑锆石 U-Pb 测年结果和校正化学风化指数数据 (CIAcorr)，这些单位与全球 Sturtian 和 Marinoan 冰川相吻合。华夏西部的托尼阶晚期至埃迪卡拉纪早期沉积岩含有丰富的中元古代晚期至新元古代早期（1150-870 Ma）和一些中新元古代（800-720）碎屑锆石。古水流数据表明沉积物向西北输送。碎屑锆石的年代和特征与北印度和东南极洲的记录相符，表明华夏地块接收到来自冈瓦纳的碎屑。因此，至少从 720 Ma 开始，华南就与冈瓦纳大陆北部相邻，而且可能更早。