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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.High Country Dredging in Kaufman Creek, Colorado
I opened the front door of my house at 5:00 AM to find it raining hard and water standing in puddles all over the driveway. Just great! It hadn’t rained for 3 weeks, and on the morning we were leaving for a weekend dredging trip, the weather decided to change.
Detecting Wet Ground Yields More Fun Than Gold
We all continued over to another location at the top of a massive placer operation. Arriving at the draw, I showed everyone where gold had been found before and we all began detecting.
The Bawl Mill
• War games...
• #%$@*!
• Big hermano is watching...
Dry Washing to Capture Fine Gold
There may be lots of smaller gold I cannot hear with a detector, but it looks just fine in my pan once it is out of the crevice.
So Where's The Gold?
...we finally got back to this exploration effort. The old works there were up above the old camp, which was very significant in size.
Cobalt and Nickel in Missouri
Cobalt and nickel are tough silver-white metals, with similar physical properties, that frequently occur together in nature, along with copper sulfides. Cobalt and nickel are used as alloys, providing great strength and resistance...
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