[1] It runs east of the San Andreas, diverging from it in the vicinity of Hollister, California, and is responsible for the formation of the Calaveras Valley there.Stresses are also produced by offset and converging slip-strike motions between the Calaveras and Clayton-Marsh Creek-Greenville Fault that continue to elevate Mount Diablo.The compressive pressure is manifest in a significant thrust fault nearby on the western slope of the mountain, the Mount Diablo Thrust Fault,[3] the most active of its kind in the region and which is also capable of producing significant local earthquakes affecting the Alamo-Danville area.In California, the plate is sliding northwestward along a transform boundary, the San Andreas Fault, toward the subduction zone.Assessments in January 2008 suggest that the northern Calaveras fault (the portion between Sunol and Danville) may be more likely to fail in the next few decades than previously thought.