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This is some recent information about the ancient tertiary stream channels of California. It updates ideas about where the gold in the channels came from and theorizes about upper extensions of the channels all the way into Nevada. "Speculative upstream continuations of various branches of the Tertiary Yuba and American Rivers enter Nevada near the Fort Sage Mountains, Hallelujah Junction, Reno(?), Little Valley, and Hope Valley (via Echo Pass). One branch of the Little Valley channel can be speculatively traced to the vicinity of Yerington." There are also a few very good maps included that alone make the article worthwhile. 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 Download as a pdf at http://www.ucmp.berkeley.edu/science/profiles/garside_paper.pdf