Chunks of the overlying rock may break off and become a part of a sill. 上复岩石的碎块可能破裂并成为岩床的一部分。
When you see a termination of a sill you should ask yourself how the intruding magma behaved at the moment of intrusion. 当你看到岩床终端时你应该自问，侵入的岩浆在侵入期是如何表现它们的特征的。
