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and soft rock away from the tops, making the fertile soil of the valleys.
Since the Appalachian mountains stretch from Newfoundland in Canada to somewhere in Alabana scientists think there must have been a giant shift in the earth’s surface millions of years ago, pushing from the east and piling all this rock into the mountain chain we now know.
Dr. Tollo said that history could be read in the rocks. Why are some rocks grey, or green, or white, or blue? Each color tells the student that it is of a different age from other colors, and composition.
One name used for a common type of rock was gneiss, that is it’s name, and that is what it is, too. Most of the interior of the Blue Ridge is of gneiss, which was
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