This glacial lake is bound by the glacier snout on one end, and a moraine-a mound formed by the accumulation of sediments and rocks moved by the glacier-on the other.
这个冰川湖的一端是冰川的末端，另一端则是一排由冰川搬运来的沉积物和岩石累积而成的冰碛。
Past glacial ages occurred partly because the weathering of rocks, over millions of years, pulls CO2 from the atmosphere, locking it in ocean floor sediment.
过去冰河时代发生的部分原因在于在几百万年的时间里，石头的风化吸收了大气中的二氧化碳，然后以沉积物的形式把这些二氧化碳固定在海底。
The first of these glacial periods is often called the huronian glaciation because it is well exposed in rocks just north of lake huron in southern canada.
第一次冰期称为「休伦冰期」，因其遗迹在加拿大南部休伦湖北方的岩石中清晰可见。
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