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Evaluating Arizona’s geologic setting, mineral resources, and geologic hazards.
Recent seismic excitement in the area of the 1887 Great Sonoran Earthquake
11 September 2021
Recent seismicity in southeastern AZ, southwestern NM, and northern Mexico may reflect long term phenomenon coupled with the Great Sonoran M7.5 event of 1887.
Are small magnitude earthquakes in N. Sonora aftershocks of the 1887 M7.5 earthquake?
11 October 2019
Do recent earthquakes in northern Sonora represent late aftershocks of the 1887 M7.5 earthquake?
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