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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="user 4386" data-source="post: 663826" data-attributes="member: 4386"><p>By looking at the age symbols on a geological map as I described above.</p><p></p><p>As for finding the base - the base of WHICH gravels? The simple answer is that you can if they are "uplifted" as I mentioned, or very shallow gravels resting on bedrock on the hills. The base is where the gravels contact older bedrock.</p><p></p><p>As I said "identified as Tertiary (particularly Older Tertiary) or Palaeogene. And they will usually be called fluvial or river gravels" And they will rest on Paleozoic bedrock not on older gravels, clays etc.</p><p></p><p>The other clue is the gravels should have a high proportion (or be dominated by) pebbles and cobbles of white vein quartz pebbles, not by fresh bedrock (sandstone etc). There is theoretically a reason why this is important.</p></blockquote><p></p>
[QUOTE="user 4386, post: 663826, member: 4386"] By looking at the age symbols on a geological map as I described above. As for finding the base - the base of WHICH gravels? The simple answer is that you can if they are "uplifted" as I mentioned, or very shallow gravels resting on bedrock on the hills. The base is where the gravels contact older bedrock. As I said "identified as Tertiary (particularly Older Tertiary) or Palaeogene. And they will usually be called fluvial or river gravels" And they will rest on Paleozoic bedrock not on older gravels, clays etc. The other clue is the gravels should have a high proportion (or be dominated by) pebbles and cobbles of white vein quartz pebbles, not by fresh bedrock (sandstone etc). There is theoretically a reason why this is important. [/QUOTE]
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Gold Prospecting
Alluvial Gold Prospecting
Where are the alluvial gold bonanzas of the past?
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