Deep M 6.8 quake ENE of Antofagasta


 

An ~90km deep M6.8 quake struck in Chile today. It seems to have originated on the slab interface, according to the USGS Slab2 model. But, the focal mechanism is the opposite of what we would expect. This is unusual. So, it is possible the quake occurred within the Nazca slab.

 
 

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