Glacial erratic
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A glacial erratic is a glacially deposited rock differing from the type of rock native to the area in which it rests. Erratics, which take their name from the Latin word errare, are carried by glacial
Glacial erratics from Norway on Schokland in the Netherlands
Glacial erratic boulder in Snowdonia (Eryri), Wales
Multiple erratics on the terminal moraine of the Okanogan Lobe. The Cascade Mountains are in the background.
Doane Rock, at Cape Cod National Seashore
Okotoks Erratic
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Okotoks Erratic is a 16,500-tonne boulder that lies on the otherwise flat, relatively featureless, surface of the Canadian Prairies in Alberta, Canada. It is part of the 930-kilometre-long Foothills E
Glacial erratic
…wander"), are carried by glacial ice, often over distances of hundreds of kilometres. Erratics can range in size from pebbles to large boulders such as Big Rock (16,500 metric tons) in Alberta. Geologists identify erratics by studying the rocks surrounding the position of the erratic and the composition of the…
Bigrock
Okotoks Erratic