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The Ages of Time
to the dawn of Man
About North Georgia

From the Editors of About North Georgia
Cenozoic EraAge of Mammals(66 million years ago - Present)
Quaternary Period(2 million years ago - Present)
Recent discoveries of Archaic Indian remains along Yellow Creek in northeast Cherokee County have pushed the date of earliest inhabitation of north Georgia back to 9,500 B.C.
Holocene EpochThe Age of Man(11,000 years ago - Present)
Pleistocene Epoch(1.8 million - 11,000 years ago)
First forests begin to grow on the north Georgia mountains.
Tertiary Period(66 - 1.8 million years ago)As oceans recede, Georgia's coastal plain is exposed. Neogene(23 - 1.8 million years ago)Pliocene Epoch(5 - 1.8 million years ago)
Erosion creates the Georgia piedmont
Miocene Epoch(23 - 5 million years ago)
Paleogene(66 - 23 million years ago)Oligocene Epoch(37 - 23 million years ago)
Eocene Epoch(58 - 37 million years ago)
Paleocene Epoch(66 - 58 million years ago)
Destruction of the Dinosaurs 66-65 million years ago.
MesozoicThe Age of Dinosaurs
(250 - 66 million years ago)
Cretaceous(135 - 66 million years ago)
First mammal, bird and insect groups appear.Sand from the Appalachian mountains begins to form Georgia's coastal plain
Jurassic(205 - 135 million years ago)
Large dinosaurs roam the earth.
Named for the Jura Mountains between France and Switzerland
Triassic(250 - 205 million years ago)
Earliest dinosaurs appear.
Creation of Lookout Mountain
and rock croppings in the Stone Mountain area.
Paleozoic(570 - 250 million years ago)Permian(290 - 250 million years ago) Erosion in North Georgia destroyed all evidence of this period
Carboniferous(365 - 290 million years ago)
Large swamps characterized this period, especially in North Georgia. They eventually became coal fields (Dade County).
Pennsylvanian (310 - 290 million years ago)
Mississippian (365 - 310 million years ago)
Appalachian Mountains undergo a third episode of mountain building (Allegheny Orogeny) . Formation of Stone Mountain completes
Devonian(400 - 365 million years ago) Stone Mountain begins forming. Appalachians were undergoing a second episode of mountain building (the Acadian Orogeny)
Silurian(425 - 400 million years ago)
North Georgia mountains erode into a vast inland sea covering much of north Georgia. brachiopods, cephalopods, crinoids, and trilobites form fossil evidence
Ordovician
(500 - 425 million years ago) Shallow marine environments. Fiirst of three episodes in the formation of the Appalachians
Cambrian (544 - 500 million years ago)
Rock formations near Clark's Hill

Vendian(650 million - 544 million years ago)
First evidence of life.
Precambrian(Beginning of earth - 650 million years ago)
Creation of the Cohutta Mountains and some areas of the Southern Appalachians


North Georgia Naturally
North Georgia -- it's a natural! From outdoor adventure to our natural history, About North Georgia covers the area with in-depth articles, photos, and insights into those great, little-known "secrets" of the area.

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