Nice rugged wash, created in an area where a detachment fault and a right-lateral strike-slip fault meet
The white streaking of quartz in the dark walls give it it's name.
Tonolite, granitic rock, sand and pepper, with older 500 million year meta sedimentary rock.
The latter form the nice small dry falls along the way.
At point "out" we come above this rock layer.
Eventually we meet a large dry fall, the end of the hike.
No sense trying to go any further, the canyon runs right up the mountain.
How to get here:
Drive in the marked canyon road.
The road is dirt with some rocks, but should be good to drive by most cars.
Or you can hike all the way, it's just a short stretch.