“Arizona had a 3.4 magnitude earthquake near the Utah-Grand Canyon border this morning (Friday) and a 3.8 magnitude yesterday,” says reader H.B. Schmidt. “There has been a rash of 55 quakes in recent weeks that cannot be related to any hydraulic fracking or other man-made phenomenon.”
“The USGS infographic at the bottom of this report shows every earthquake in Arizona since 1970. Of prime importance is the large and extremely dramatic increase in numbers in the NW corner of the state in the past couple of years, far above the historical norm. Some are along faults not previously known, but what the USGS will say is that it’s not due to volcanic activity despite Arizona being home to more than 600 volcanoes. While I would agree with that assessment, it’s hard to explain the sudden uptick in earthquake activity.
“Perhaps this is confirmation that stress along the southern stretch of the San Andreas fault in California is at a critical load and indeed is “locked and loaded” for a catastrophic decompression event.”
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