South China and Annamia South China and Annamia formed a single continent. Strike-slip movement between it and Gondwana accommodated its steady drift northwards from offshore the Indian sector of Gondwana to near the western Australian sector. This northward drift is evidenced by the progressive increase in limestones and increasing faunal diversity.
soUth chInA and AnnAmia SouTh chiNa And Annamia FOrmEd a siNglE contineNt. strike-SlIp MOvemEnt beTWeEn it And gOndwAnA acCOmMoDaTeD its stEADy driFt nORTHwArdS from oFFsHore the indIan seCtor oF GOnDwaNa TO Near the wEStErN AUStralian sectOr. THIs NorThwArd driFt is eVIdenCed By the ProgressiVE INcreaSe in limestonEs and inCrEaSIng fAUnaL DIverSity.