Spreading or rifting along the other arms of the triple junction can form new oceanic basins, whereas the aulacogen can become a sediment-filled graben.

• 沿三联点的其他臂发生扩张作用或裂谷作用时，可形成新的大洋盆地，而断陷槽则成为被沉积物充填的地堑。