Sunday, November 22, 2015

More small quakes on the Intermountain Seismic Belt

There was yet another small quake in northwest Arizona, along the southern end of the Intermountain Seismic Belt [right, red lines are active faults]. This magnitude 1.8 event [blue dot in image] occurred at 4:04 p.m. on Friday, following two others [yellow dots in image] just before noon in the region.   Another tiny quake at magnitude 0.9, [orange dot in image] occurred this morning, at 2:10 a.m

Dr. Jeri Young, who runs the state seismic network for AZGS cautions that the preliminary locations from the USGS are off by 5-10 km, when the Arizona stations data are incorporated.
[Map credit, USGS]

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