Elsinore does exhibit en echelon stepping which is quite noticeable on terrain maps where it passes behind the Santa Ana mountains. Just look at the edge of the mountains from Corona in the north down to Temecula in the south. Lake Elsinore is a sag pad caused by one of these steps.

Re cross sections, I don't currently have software to plot it, but I'm sure I could write it. Maybe take a day or two at most. I actually thought about writing some cross section software a few weeks back for the Okhotsk quake because I could not find one for that event at the time. Making quick & dirty code just to generate a single plot shouldn't be hard. An interactive program would be much more involved.

Also, while working on this map I came up with an idea for interactively highlighting a quake map temporally so one can easily visualize how quakes occur over time, not unlike how that map shows. But this one would take a while to do. Writing quick code for my own use is easy. Writing something for others to use is time consuming - for the user interface.

As for 3D, I wrote a program for that many years ago and made it available on my website. But it's really primitive, and it's database files have not been updated since I put it out. Thinking about it, I'm sure I could do that one better, ESPECIALLY if I could learn how to access OpenGL.

Brian