Term: Erratic Class:  
 vernacular   (0%)
Created 6 June 2017
Last modified 6 June 2017
Contributed by GCW Glossary


Definition: A rock of unspecified shape and size, transported a significant distance from its origin by a glacier or iceberg and deposited by melting of the ice. Erratics range from pebble-size to larger than a house and usually are of a different composition that the bedrock or sediment on which they are deposited.  USGSGlaciers(ambiguous) 

A boulder or large block of bedrock that is being, or has been, transported away from its source by a glacier.  Swisseduc 

A large rock boulder that has been transported by glaciers away from its origin and deposited in a region of dissimilar rock.  PhysicalGeography