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Was the M5.3 Trinidad, CO Earthquake Natural or Induced?

A magnitude 5.3 earthquake occurred near Trinidad, Colorado in the Raton Basin on August of 2011. A previous study by USGS scientists of smaller earthquakes in the area had concluded that the Raton Basin was experiencing a significant increase in the number of earthquakes starting in 2001 after an increase in hydrocarbon production activity starting in 1999. The M5.3 Trinidad earthquake provided another important piece to the puzzle.

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