It's a late report, but i wanted to report a very strange micro quake near dexter Oregon about 5 years ago. Imagine a 5 point daisy chain explosion. Progression from 1 sec pause to .5 or less. Has anyone been in an earth quake that fealt like a handfull of fast explosions. Like open pit mine blasting, but no mines here and it was fealt for 20 mile radius or more.