Ice Age

Ice Age, the Pleistocene epoch of geologic time, during which periodic, extensive glacial activity occurred in many parts of the world.

Penny Ice Cap
Remnant of the Wisconsin Ice Age (photo by Barbara Brundege and Eugene Fisher).

Ice Age

Ice Age, the Pleistocene epoch of geologic time, during which periodic, extensive glacial activity occurred in many parts of the world. The Pleistocene is generally considered to encompass the time beginning 1.65 million years ago and ending 10 000 years before the present.

See also Glaciation; Geological History.