USGS investigating cause of ‘rare’ earthquake – 9NEWS.com

USGS investigating cause of ‘rare’ earthquake
9NEWS.com
GOLDEN – Seismologists with the United States Geological Survey are trying to determine what caused a 3.4 magnitude earthquake northeast of Greeley Saturday, and area scientists say they haven’t seen a quake of that magnitude in at least 40 years.

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Source: Earthquake News From Google News

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