冰川石，即冰川漂砾，是由冰川搬运到很远很高地方的巨大冰碛砾石。 它的粒径可达数米甚至数十米，其搬运远近以冰川规模大小而定。冰川搬运能力很强，它不仅能将冰碛物搬运到很远的距离，还能将巨大的岩块搬到很高的部位。
沿着美国东海岸，最南边的冰川运动被大量的沙子和终碛石的漂流沉积物（形成了长岛和科德角）所记录下来。
Along the east coast of the United States, the southernmost advance of this ice is recorded by the enormous sand and drift deposits of the terminal moraines that form Long Island and Cape Cod.
由于冰川消融，紧靠冰川的石崖变得不稳定，因此引发雪崩。
Rock walls resting against glaciers will become unstable as the ice disappears and so set off avalanches.
站在磕头石的上方往右可以看到绿凤峰半月腰处冰川时期山脉运动的痕迹。
Above the rock in the right direction, one can see traces of the mountain movement of the glacial period half way at Green Phoenix Peak.
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