South America Earthquake Map - Shows how seismicity patterns build with time. Provided by USGS National Earthquake Information Center.
Web Earthquakes: South America - Provided by U.S. Geological Survey National Earthquake Information Center.
Guiana Shield Media Project - Information about the Guiana Shield, a geologically ancient, biologically rich and culturally diverse territory designated by geological formations in northeast Brazil, French Guiana, Suriname, Guyana, Venezuela and Colombia. [several languages]
Volcanoes in South and Central America - Information and photographs of volcano activity.
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