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Use "undeformed" in a sentence
"It is studded with lakes and wetlands and is underlain by undeformed, noncarbonate strata."
"The strata of Ecoregion 60b is undeformed, unlike the rocks of the Northern Sandstone Ridges (67c); as a result, Ecoregion 67c also has more relief and forest density than Ecoregion 60b."
"That segues to the biggest problem with "The Last Stand of the Elephant Man," an account of Joseph Merrick's awakening in a future where his soul we'll call it that has been placed in an undeformed body, while his body is inhabited by a futuristic thrill/fame seeker."