All Articles
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.A Modern Gold Rush In Sudan
A couple of months ago, folks on the US and Aussie online gold forums started noticing that GP4500 detectors (Minelab’s top of the line gold unit) were selling used for prices significantly more than they cost new!
Ask The Experts
Q: Does gold get stuck in the crucible?
Legislative and Regulatory Update
• Nevada proposal to cap tax deductions for mining businesses stalls
• NEPA gets a much needed update
• Army Corps to release review of Pebble Mine
Over The Divide: Kenneth Leon Harn
Detectors: Past, Present and Future
Detectors were invented long before I was born, but it was in the 1960s when they started to become an item popular enough to power a fledgling industry. The key development was miniature transistor technology replacing the old fashioned tube technology of the 1950s, making lightweight, affordable detectors possible.
Detecting Alluvial Bench Deposits
The same questions you ask yourself about gold trapping features in the present stream can be applied to the benches above the stream. Just imagine the stream at a much earlier time, before it cut its way down to the present level…
Legislative and Regulatory Update
• Clean Water Act rule change proposed
• DOJ files motion against Oregon miners
• Off-road access case to be reviewed by Supreme Court
• Resources Coalition hard at work
• Leavitt takes helm of EPA
Subscription Required:
The Bawl Mill
• Our Readers Say
• Progress Report on Washington State Small-Scale Regulations
• Bill to Allow Mining of Coeur d'Alene Basin
• Dredging Below the Homestake
• Looking Back
• Picks & Pans: The Glory Hole
• Enthusiastic Crowds at PDAC
• Fraser Institute Survey Results Rank Best (and Worst) Mining Locales
• Synclinal Oil
• Small-Scale Prospecting & Mining (A Little History)
• Higher Zinc Price Creates Opportunity
• Government Appeals Miner Injury Case to Supreme Court
• Mining Stock Quotes and Mineral & Metal Prices
• Melman on Gold & Silver
