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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.The Petersville—Yentna Goldfields
Upon first entering this district in the early 70s, the trip into the Petersville area by vehicle was risky at best, especially during rainy periods in summer. The road has been improved somewhat since then, but not much.
Melman on Gold & Silver
Last month saw the mining industry take center stage as Toronto, Ontario was once again host city for the giant PDAC annual mining convention. We take at look at that gathering below, focusing on some of the negative industry sentiment on display.
Utah Tellurium Mine Creates New US Supply of Key Mineral
“The ability to have 20 tons produced here in America helps our country mitigate those supply concerns.”
Melman on Gold & Silver
Another potential problem is the body of regulations imposed by the Paris Climate Accord that President Trump had negated but which President Biden has immediately rejoined.
Ask the Experts
• Where would I find a map for the Western states on high silica sand deposits?
Melman on Gold & Silver
“Scandals, scandals, everywhere, and not an end in sight!” might be the tag line of a musical depicting the financial markets as they near the end of a particularly tumultuous year. First we had the massive accounting scandals associated with the Enron collapse. This was followed by the corporate scandals where inaccurate and misleading research of one sort or another made headlines. But none of those compare in possible scope to the mutual fund scandals...
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