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Gold Prospecting
Alluvial Gold Prospecting
Where are the alluvial gold bonanzas of the past?
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<blockquote data-quote="Geepeezee7" data-source="post: 663810" data-attributes="member: 23915"><p>..."4. You can fairly easily prospect uplifted gravels shown on geological maps - not a lot to learn. The gravels containing the gold will usually be identified as Tertiary (particularly Older Tertiary) or Palaeogene. And they will usually be called fluvial or river gravels (many other gravel types lack gold). <em>You need to prospect in the soil near what would have been the base of the gravels when they formed (where they lie on older bedrock). Not just everywhere where they lie on bedrock, but preferably the lowest former base, that would have been the active stream channel."...</em></p><p></p><p>..."<em>You need to prospect in the soil near what would have been the base of the gravels when they formed (where they lie on older bedrock). Not just everywhere where they lie on bedrock, but preferably the lowest former base, that would have been the active stream channel."...</em></p><p></p><p>goldierocks how does one work this out? Is it possible from a geological map? Can you find the base of the gravels off modern topography?</p></blockquote><p></p>
[QUOTE="Geepeezee7, post: 663810, member: 23915"] ..."4. You can fairly easily prospect uplifted gravels shown on geological maps - not a lot to learn. The gravels containing the gold will usually be identified as Tertiary (particularly Older Tertiary) or Palaeogene. And they will usually be called fluvial or river gravels (many other gravel types lack gold). [I]You need to prospect in the soil near what would have been the base of the gravels when they formed (where they lie on older bedrock). Not just everywhere where they lie on bedrock, but preferably the lowest former base, that would have been the active stream channel."...[/I] ..."[I]You need to prospect in the soil near what would have been the base of the gravels when they formed (where they lie on older bedrock). Not just everywhere where they lie on bedrock, but preferably the lowest former base, that would have been the active stream channel."...[/I] goldierocks how does one work this out? Is it possible from a geological map? Can you find the base of the gravels off modern topography? [/QUOTE]
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Gold Prospecting
Alluvial Gold Prospecting
Where are the alluvial gold bonanzas of the past?
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