In 2013, a gigantic landslide at a Utah copper mine probably was the biggest non volcanic slide in North
America’s modern history, and included two rock avalanches that happened 90 minutes apart and surprisingly
triggered 16 small earthquakes, University of Utah scientists discovered. The landslide – which moved at an
average of almost 70 mph and reached estimated speeds of at least 100 mph – left a deposit so large it "would
cover New York’s Central Park with about 20 meters (66 feet) of debris," the researchers report in the January
2014 cover study in the Geological Society of America magazine GSA Today. While earthquakes regularly
trigger landslides, the gigantic landslide the night of April 10, 2013, is the first known to have triggered quakes.
From the above passage, the reader can conclude that __________.