The collision of Australia and Indonesia stopped the rollback of slabs, and as a result the South China Sea, the Sulu Sea and the Celebes Sea began to close.

• 澳大利亚和印度尼西亚的碰撞阻碍了俯冲带的后退 ,导致了南海、Sulu海和Celebes海盆地的扩张终止。