Arizona State Government posted Beautiful Geological Map of North America Showing Bedrock Ages Arizona State Government El Presidio - Tucson:

Beautiful Geological Map of North America Showing Bedrock Ages

Map created by U.S. Geological Survey The map above shows the ages of bedrock in North America from yellow (youngest) to green to blue to red (oldest). The maps official name is the The North America Tapestry of Time and Terrain. It was created by Kate E. Barton, David G. Howell, José F. Vigil...

Beautiful Geological Map of North America Showing Bedrock Ages
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