Where did the bulk of the placer gold in Tertiary river sediments in California come from?…maybe Nevada!

This paper further expounds on this alternative theory of the origin of California placer gold is available here.

Christensen, Odin D., Christopher D.Henry, and Jim Wood, 2015, Origin of gold in placer deposits of the Sierra Nevada Foothills, California, Geological Society of Nevada Symposium 2015.


New theory for the occurrence of gold nuggets in the “Early Tertiary Auriferous Gravels” of California

Gold Nuggets—Evidence of Past Climates and Former Landscapes by Odin Christensen presents a plausible explanation for the rich concentrations of coarse placer gold in California’s Early Tertiary auriferous rivers which largely drained a region of Nevada with a dearth of lode gold deposits.

Now posted in References.   here


Geology of the Ione Formation in the Ione Area

This document is now available in the References Section.  It is Part B of the Guidebook for the Fieldtrip conducted for the 1995 Association of Engineering Geologists Annual Meeting in Sacramento CA.