Glacial oscillations occur due to spatial variability as discussed in Glaciers With Space, but fluctuations also occur with respect to time. Within this page we will discuss glacial changes through the course of time under three major topics. First we will look at Geologic Time and Glacier Cycles, second we will explore the importance of Plate Tectonics and Glacier Formation, and finally we will discuss the glacial effects of the Earth's Milankovitch Cycles.

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