September 23: The Nevada Bureau of Mines and Geology reported today the discovery of minor cracks related to fault movement during the swarm. According to NBMG, "Three groups of cracks were found over an 800 m distance. Two groups were on a fault with very subtle surface expression, and the easternmost group occurred along a very prominent strike-slip fault. The cracks are minor, commonly opened only 2 to 5 mm wide, but are significant because they align along faults, are unique in the area canvassed, and show tectonic patterns. Several of the cracks have right-stepping patterns and a couple of cracks had shifted left-laterally by as much as 3 mm"

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