○○○bedrock⪢⪢
Finally and most importantly, mountains have deformed bedrock, meaning the layers of rock beneath the surface have been folded, faulted and tilted by the movement of Earth's crust.
http://qindex.info/i.php?x=16113
○○○plateau⪢⪢
Like a mountain a plateau tends to have high elevation different though in that it has very little relief it tends to be fairly flat. Most importantly plateaus do not have deformed bedrock rather they have horizontal or flat bedrock layers.
￫ prairie
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○○○ New Bedford ⪢⪢
