The Mw 5.8 Pawnee earthquake occurred at 12:02 UTC on 3 September 2016, local time at 6:02 a.m. on Saturday. It was widely felt throughout Oklahoma and neighboring states. The earthquake occurred near the junction of the two previously mapped faults: Watchorn fault and Labette fault. However, the actual source fault was the previously unmapped Sooner Lake fault (also known as the Pawnee fault). This is the largest earthquake since the 1950s in the instrumental history in Oklahoma. Many recent studies suggest that most earthquakes in Oklahoma since 2009 are induced by wastewater injection (e.g., Ellsworth, 2013; Keranen...

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