Age, provenance and tectonic setting of Neoproterozoic to early Paleozoic sequences in southeastern South China Block: Constraints on its linkage to western Australia-East Antarctica

Late Mesoproterozoic (ca.1300-1000 Ma) detritus in the lower Louziba Group were probably derived primarily from the Windmill Islands-Bunger Hills (1300-1050 Ma) and Albany-Fraser Belt-Musgrave (1300-1050 Ma) regions in East Antarctica-western Australia. Increasing input of early Neoproterozoic (∼990-950 Ma) detritus in the uppermost Louziba Group indicates a greater contribution from the Eastern Ghats (ca. 990-950 Ma) in eastern India and North Prince Charles Mountains (ca. 990-950 Ma) in East Antarctica. This source change was synchronous with the formation of the Kuunga (560-530 Ma) and Pinjarra (560-520 Ma) Orogens during assembly of Gondwana. The sediments of the Huanglian Formation of the uppermost Louziba Group likely recorded this event. Overlying Paleozoic sequences then were deposited on passive margin with detritus being derived dominantly from an early Neoproterozoic source, e.g., eastern India and East Antarctica.