|Here are a few links about the Au-bearing gravels of the California foothills and Sierra Nevada. (It's time to get this out of my drafts folder.)|
Garside, Larry J., Henry, Christopher D., Faulds, James E., and Hinz, Nicholas H., 2005, The Upper Reaches of the Sierra Nevada Auriferous Gold Channels, California and Nevada, in Rhoden, H.N., Steininger, R.C., and Vikre, P. G., eds., Geological Society of Nevada Symposium 2005: Window to the World, Reno, Nevada, May 2005, p. 209-236.
Yeend, W.E., 1974, Gold-bearing gravel of the ancestral Yuba River, Sierra Nevada, California: U.S. Geological Survey Prof. Paper 772, 44 p., Plate 1 and Plate 2.