glacial scour

glacial scour

[¦glā·shəl ′skau̇r]
(geology)
Erosion resulting from glacial action, whereby the surface material is removed and the rock fragments carried by the glacier abrade, scratch, and polish the bedrock. Also known as scouring.
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References in periodicals archive ?
The data revealed previously unknown underwater seamounts, glacial scours created during a past ice age and large craters thought to be formed by gas seeps emanating from the ocean floor.