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In northern Georgia, you will find the southern terminus of the Appalachian Mountains, arguably the oldest mountain range on earth. The mountains date from the Permian time period of earth's history, around 300 million years ago. These mountains are igneous (volcanic) in origin, but in the huge amount of time since then, are also metamorphic. In southern Georgia, since rivers and streams drain the area, the rocks are largely sedimentary, composed of igneous and metamorphic rocks from the north laid down in riverbeds and deltas.

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