Tectonic Development of the Appalachian—Ouachita—Marathon Mountain Range (1 of 3)
map of the world showing location of continents 500 million years ago
500 Million Years Ago—Iapetus Ocean Opens. Land that will later become Florida is part of Africa. The Yucatan Peninsula and Cuba may have been on the north side of South America.
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Modified from “Parks and Plates: The Geology of our National Parks, Monuments and Seashores,” by Robert J. Lillie, New York, W. W. Norton and Company, 298 pp., 2005, www.amazon.com/dp/0134905172.