August 2001 by Edgar B. Heylmun, PhDGold and other valuable metals are often deposited in breccia and rubble formed by flat or gently-dipping faults. Such faults are commonly found in areas of crustal stretching caused by the movement of tectonic plates. Flat-faults are especially common in southeast California, southern Arizona, and northern Sonora, Mexico. However, they can be present anywhere that crustal stretching has occurred.
There weren’t as many pieces of gold, but what I did find was bigger. As I worked my way down towards the spot that I had been working the first three days, I noticed a large crack that crossed the river.
• ESA changes for the better
Has your experience ever led you to wonder why some gold is deposited on bedrock and in crevices, while other gold is not? We’re going take a deeper look at this and see what we can figure it out.
With history so often repeating itself, you can’t go wrong searching for gold using modern exploration techniques and exploration theories in regions of historic gold activity.
Q: What classes should one take if planning on majoring in mining engineering or geology?
• And the award goes to...
• How about a cold one?
The Bawl Mill • Our Readers Say • The Public Process—Getting Involved and Making a Difference • Pacific Northwest Miners Request Help • USFS Roadless Comments Reopened • Basic Drywashing Principles • Fields of Gold • Picks & Pans: All That Glitters Pans Out Well! • De Beers Undergoes Overhaul • Gold in Michigan • Update on the West Mojave Desert Planning Area • 2001 Inductees to the National Mining Hall of Fame • Company Notes • The Spanish Silver of Mowry • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices