After I worked on the focal mechanisms, I messed around with the parameter of hypoDD to see if the relocated hypocenters were valid. Only large changes to the quantity max # of neighbors showed any results, and it just shallowed the events out again, meaning the relocations were stable. After I did all this, the question was, what to do next?

I spent the next couple of days painstakingly editing the data so that I could plot the focal plane of the relocated data and depths. It also showed no correlation between focal mechanisms, though many of them were oblique or reverse. Not knowing where to go from here, I spent some time dedicated to researching information regarding the nature of earthquake swarms, specifically the implications they have on magmatic events. I decided to plot depth vs time and go from there.

It's taken directly from matlab, so editing still needs to be done, but it shows a distinct shallowing trend in events. When I saw this, it was a clear indication of dike emplacement. It also evens out and starts a more horizontal trend later on. Working hypothesis: Dike emplacement interacting with sill. I plotted latitude and longtude versus time as well. There seems to be a small change in the trends where the dike interacts with the sill in the latitude plots, but the longitude plots cover such a small distance any trend is near impossible to decipher.

Currently, I am working on editing my figures as well as making more schmatic diagrams of what's going on. I'm done with the data processing, partially because I don't have enough time to do anymore in depth analysis. Still, I'm glad that I got some result.

This particular area in the Trans-mexican Volcanic Belt is not studied that in depth. As far as I can tell no tomography has been done here to either support the hypothesis of a sill, or to counteract it.