e/Geology of the Appalachians

Information
has gloss	eng: The geology of the Appalachians dates back to more than 480 million years ago. A look at rocks exposed in todays Appalachian Mountains reveals elongate belts of folded and thrust faulted marine sedimentary rocks, volcanic rocks and slivers of ancient ocean floor - strong evidence that these rocks were deformed during plate collision. The birth of the Appalachian ranges marks the first of several mountain building plate collisions that culminated in the construction of the supercontinent Pangaea with the Appalachians and neighboring Anti-Atlas (now in Morocco) near the center. These mountain ranges were once higher than todays Himalaya mountain range, which was also formed by continental collision.
lexicalization	eng: Geology of the Appalachians
instance of	(noun) a mountain range in the eastern United States extending from Quebec to the Gulf of Mexico; a historic barrier to early westward expansion of the United States Appalachians, Appalachian Mountains

Media
media:img	Catskill section.jpg
media:img	Eastern North American Paleogeograpy Middle Devonian.png