US Geological Survey Archives - EnviroNews | The Environmental News Specialists

(EnviroNews World News) — Pawnee, Oklahoma — A major earthquake, caused by the underground disposal of fracking wastewater, rattled north-central Oklahoma on the morning of September 3, 2016. The U.S. Geological Survey (USGS) said the event occurred at 8:02 a.m. EST and measured 5.6 on the Richter scale….