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When Did Gold Show Up In Your Area?


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Most of us don't have a geology degree but it would probably help when we are out detecting and doing research.  Geology has a language laced with time periods that I've never taken the time to learn so this is going to be a ramble.

This is a chart which can help us to know history and geology and place the events which formed our detecting areas into the puzzle.  We can then use plate tectonics to help us know how our region got to where it is today and understand the mountains and folds in the earth's crust.

How do we tell the difference between geologic ages?

http://www.stratigraphy.org/index.php/ics-chart-timescale

One article I read said: On Earth, gold finally reached us some 200 million years after the formation of the planet when meteorites packed with gold and other metals bombarded its surface. During the formation of Earth, molten iron sank to its centre to make the core. This took with it the vast majority of the planet’s precious metals — such as gold and platinum. In fact, there are enough precious metals in the core to cover the entire surface of Earth with a four-metre thick layer.

https://www.zmescience.com/science/how-gold-is-made-science-064654/

And then came the plates!

Tectonic Plates’ Patterns Revealed

https://www.livescience.com/38819-plate-tectonics-patterns.html

 

Can someone that knows this stuff make it more simple?  haha  I mean where did the gold in Arizona, Nevada, California, Australia and New Zealand come from in a geological time frame (the beginning we know from the star or stars) and then the weathering has come into play.  I guess every local Mining College has people working on that so that professional miners are more successful than the rest of us.

Clay, are you reading this?   The topic is too big so old timers learned from each other and passed along their knowledge of specific deposits and veins.  The USGS and satellite imagery are probably now the tools in use and maybe we as detectorists could get a drone?

Mitchel

 

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