In geology, drift is the name for all material of glacial origin found anywhere on land or at sea, including sediment and large rocks (glacial erratic). Glacial origin refers to erosion, transportation and deposition by glaciers.
- Press, F., and R. Siever, 1986, Earth, 4th ed., W.H.Freeman and Company, NY, p. 248
- The American Cyclopædia. 1879. .
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