SALT LAKE CITY – What some rural communities thought were earthquakes were really just earthquakes caused by nearby mining.
The U.S. Geological Survey first sent out a notification Thursday afternoon that a 3.1 magnitude earthquake struck Vernal around 3:22 p.m., while another earthquake hit the ground near Corinne, Utah just minutes later, magnitude 3 , 43 shaken.
But the University of Utah Seismograph Station corrected this information later that evening and said in a tweet that the Vernal “incident” was caused by a “quarry explosion” while the Corinne tremor was actually a “micro-earthquake.”
In fact, the event 22 kilometers southwest of Corinne was incorrectly categorized as it occurred just 30 seconds after the quarry was blasted.
“Since this event (Corinne) occurred 30 seconds away from an M1.0 earthquake under the Great Salt Lake, the M1.0 event was initially reported as M3.4, but was quickly checked by a UUSS seismologist,” it says in the tweet.
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