Thanks Goldierocks, yes I meant geological maps, thanks.
Even a basic understanding would be of some help.
For example, I go to TRILOBITE app, and click on detailed Geology, and i have occurrence layer on, I notice that the colour where gold has been found is in the "Brown" Paleoproterizoic ground, and to the west the colour is different, and there are no occurrences, despite it being very close. the lighter coloured ground is cenozoic materials.
Now my basic understanding of cenozoic, (from wikipedia) is that is fairly young? 2 - 66 millon years, and host to modern plants and animals.
So i am thinking that the age has a lot to do with gold being trapped in the host material, and the older ground has released some of the gold as it decays over longer times?
Should I be concentrating on ground from certain periods of time, that also have certain formations?
Am I anywhere near it? LOL
P.S. i am actually looking for unworked ground where I can, if that makes any difference.