Human-Made Earthquakes Reported in Central U.S.
The number of earthquakes in the central United States rose “spectacularly” near where oil and gas drillers disposed of wastewater underground, a process that may have caused geologic faults to slip, U.S. government geologists report.
The average number of earthquakes of magnitude 3 or greater in the U.S. midcontinent – an area that includes Arkansas, Colorado, Oklahoma, New Mexico and Texas – increased to six times the 20th century average last year, scientists at the U.S. Geological Survey said in an abstract of their research.
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