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... > Science Keywords > EARTH SCIENCE > LAND SURFACE > GEOMORPHIC LANDFORMS/PROCESSES > GLACIAL PROCESSES > GLACIAL STRIATION

TERME PRÉFÉRENTIEL

GLACIAL STRIATION  

DÉFINITION

  • Scratches or gouges cut into bedrock by glacial abrasion. Glacial striations are usually multiple, straight, and parallel, representing the movement of the glacier using rock fragments and sand grains, embedded in the base of the glacier, as cutting tools. Large amounts of coarse gravel and boulders carried along underneath the glacier provide the abrasive power to cut trough-like glacial grooves, and finer sediments also in the base of the moving glacier further scour and polish the bedrock surface, forming a glacial pavement.

CONCEPT GÉNÉRIQUE

NOTE DE CHANGEMENT

  • 2013-08-06 15:02:08.0 [tbs1979] Insert Concept add broader relation (GLACIAL STRIATION [12bb9ec2-a706-436d-aa29-253495276052,105675] - GLACIAL PROCESSES [b409a30b-0e3f-4592-bec9-7d371797b4a9,85295]);
  • 2013-08-26 09:17:28.0 [tbs1979] insert Definition (id: null text: Scratches or gouges cut into bedrock by glacial abrasion. Glacial striations are usually multiple, straight, and parallel, representing the movement of the glacier using rock fragments and sand grains, embedded in the base of the glacier, as cutting tools. Large amounts of coarse gravel and boulders carried along underneath the glacier provide the abrasive power to cut trough-like glacial grooves, and finer sediments also in the base of the moving glacier further scour and polish the bedrock surface, forming a glacial pavement. language code: en);

URI

https://gcmd.earthdata.nasa.gov/kms/concept/12bb9ec2-a706-436d-aa29-253495276052

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