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Pediments
April 2005 by Edgar B. Heylmun, PhD
A pediment is a broad, gently sloping erosion surface or plain of low relief that is often found in arid and semi-arid regions at the base of a receding mountain front. The example shown is from the Palo Verde Ranch 15-minute topographic quadrangle, southwest of Tucson, Arizona. This is one of the best examples the writer has ever seen.Wild and Scenic Rivers Act (P.L. 90-542, as Amended)
Just about all of us have heard the term “Wild and Scenic Rivers,” and we’ve likely been on one or several of them in our prospecting ventures. More than once someone has said to me “...but that’s a wild and scenic river.” My first question has always been, “What part of the system is it? Is it classified wild, scenic or recreational?”
Gold Hunting on Libby Creek
The biggest nugget I have found detecting here was three grams and the following weekend someone found a 9-gram nugget while detecting. Some have even found quarter-ounce nuggets, with one being a chevron nugget.
Honda Pares Down Use of Precious Metals in Autos
Honda Motor Co. said it will begin using new catalytic converter technology it believes will slash use of pricey precious metals in auto emission-control systems by 50 to 70 percent.
The Beer That Saved Goldfield
The Nevada Historical Society's
"This Was Nevada Series"
Beach Mining Returns to Washington State
Washington State gold miners received good news when they were recently informed that State officials have granted them authority to resume limited placer gold beach mining...
The San Juan Mountains, Colorado
The rugged San Juan Mountains of Colorado rise to 14,309 feet and were a barrier to overland travel for many years. Precipitation, in the form of summer thundershowers and heavy winter snow, is enough to support coniferous forests.
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