In my extremely rural hometown in Northern California, the name of the small (15 or so students) high school is Triple Junction High. The Mendocino Triple Junction is a globaly rare intersection of three tectonic plates beneath the sea off the Northern California coast.
The school logo/flower is also Trillium <http://www.goldsword.com/sfarmer/Trillium/>, a unique three-petaled lily that grows only in the shady Redwood forests of the area, but I digress…
If you ask most Californians, there are signifigant “cultural” differences that just happen to coincide with the slice of the San Andreas Fault across the belly of the state. (You have to keep in mind that the equivalent cultural/regional diversity between Georgia and New Jersey is squished into the the phenomenon that is Californication.)
In my hometown, there are tongue in cheek opinions about how fitting it is that while Southern California is slowly ground into sand between the San Andreas and the Pacific, portions of the Northern California Coast were actually lifted up by the grinding of the Gorda plate beneath North America during the last big quakes in the early 90’s.