Formation
A large river flowing from the mountains to the west deposited gravels on top of sandstones and shales that formed the hill's bedrock. During the last ice age, about 15,000 years ago, ice sheets wore away the rock and gravel. At the end of the ice age, retreating ice left glacial till on the hill's top. Glacial Lake Calgary was formed in the area and deposited sediments on the side of the hill. A river, later to be known as the Bow, eroded the sediments and helped shape the south side of the hill.
Read more about this topic: Nose Hill Park
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