pressure ridge

pressure ridge

noun
1.
a ridge produced on floating ice by buckling or crushing under lateral pressure of wind or ice.
2.
Geology. a ridge produced on a congealing lava flow by pressure from the still-liquid interior.

Origin:
1895–1900
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Pressure ridge is always a great word to know.
So is horizon. Does it mean:
process where the surface of the earth is worn away by the action of water, glaciers, winds, waves
thin, distinctive stratum useful for stratigraphic correlation
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