Brian, OK, but that is all north of Salton Sea. There is some contraction near and northwest of northern Salton Sea, but I don't think on a large scale. The San Bernadino and San Gabriel Mountains are associated with thrust faults that may be driven by San Andreas-related collision, but at least in the shallow crust are separate. I don't know what faults are directly responsible for Mt San Jacinto being high. I also am not up on what vertical motions are involved directly with any oblique component of slip on the non-vertical parts of the San Andreas. I think Craig Nicholson, who published on the 1986 North Palm Springs earthquake (M6.1), told me that branches of the San Andreas there dip moderately: no where near vertical.

I have published on non-vertical strike-slip faults:
Hosgri fault offshore south-central California: one of its strands sips moderately towards the mainland (Sorlien and others 1999 "Geology"

The offshore Santa Monica Dume fault, dips north about 45 deg: Sorlien et al 2006 Journal of Geophysical Research.

The seismic reflection data only image the upper 2 to 6 km of these faults so have to work with relocated seismicity to see what they do deeper.

I work with Leonardo Seeber who has added me as co-author to his 3 papers on the North Anatolian fault in Marmara Sea: most significant to hazard to Istanbul is that the part SE of Istanbul dips SSW away from Istanbul, steeply, 70 to 80 deg (from some prestack migrations of French deep crustal seismic profile that I saw while in Turkey but have not been able to find published or on line etc.)

Chris