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Preferred Term:

rock flour

Definition:
Fine-grained, silt-size sediment formed by the mechanical erosion of bedrock at the base and sides of a glacier by moving ice. When it enters a stream, it turns the stream's color brown, gray, iridescent blue-green, or milky white. Also called glacier flour or glacier milk.
Concept Schemes:
NALT Full
Broader Concept:
Entry Terms:
  • glacier flour
  • glacier milk
  • glacial flour
URI:
https://lod.nal.usda.gov/nalt/233436
Download this Concept:
RDF/XMLCreated 2014-10-28, last modified 2014-11-20