[Skywise]

(01-04-2015, 12:15 PM)Island Chris Wrote: Brian, if you feel like it, put Tony's oil seep and these quakes on a map.

Turns out the quakes are pretty far from Towsley Canyon - nearly 30km. And there's the San Gabriel Fault Zone between them.

Ruby Canyon, on the other hand, *IS* the Clearwater fault, which is to the east of the quakes by about 8km, and the quakes are on the Clearwater fault. However, the aftershock sequence and focal mechanism seems to indicate it was on a perpendicular cross fault. There does appear to be indications of such on the map at the location of the main shock. This may explains Chris's description of "NNE-SSW shortening".

Map below.

Brian