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Published May 1940 | Published
Book Section - Chapter Open

Seismicity of Central and South America


The seismic zones of Central and South America are part of the circum-Pacific belt of activity which includes a large majority of the shallow shocks of the world, a still larger fraction of those at intermediate depth (60 to 300 kilometers) and all those at great depth (300-700 kilometers). This belt has many narrow branches. One of these diverges in the region of Oaxaca (Mexico) and passes southward by way of the Galapagos Islands and along the Easter Island rise. Two others have the form of loops--one surrounding the Caribbean Sea, and the other following the "Southern Antilles" of Suess-South Georgia, the South Sandwich Islands, etc.

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August 19, 2023
October 23, 2023