Thoughts on my impressions?
It seems the M7.5 aftershock ruptured a different fault (or segment?) than the M7.8.

M7.8 -most likely a left-lateral event on a NE-SW fault (blue circle on image, from USGS)

M7.5 -95km to the N, most likely along an east-west left lateral fault

Now trying to place these over the known fault maps and it's messy!

CleverLibre Social

CleverLibre Social is an inclusive social instance for open discussion, learning, and community.
All cultures welcome.
Hate speech and harassment strictly forbidden.