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Post by aussiedigga on Feb 11, 2017 22:10:29 GMT 10
May have found a ancient river bed , not sure don't know much about them , but on the bank of the creek is a section around 12-15 meters across with around 3 inch oval shaped black rocks all exactly the same size , almost looks like they have been laid by mans hand because it looks so perfect . Around 100 meters from the creek in same direction as the stones , against a large hill is bedrock !!!! I don't have any photos at the moment but will bang some up later in the week , anyone with a little experience with this type of thing , would be appreciated for a bit of input
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Post by shivan on Feb 11, 2017 23:31:08 GMT 10
Generally when we think of ancient river/creek beds (for me anyway), is more of when you start to find water worn rocks up in the hills or in fields with no close water course's. This means that there was water running at some stage to cause the rounding of the rocks.
If you are seeing water worn rocks near a creek area it is more likely that it is from the creek changing its course over the years or even flooding.
The black rocks could be a basalt or perhaps a stain. Cracking one open would give you an idea. Being that they are rounded makes it seem unlikely they were put there as most quarried rock would be coarse i would have thought.
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Post by aussiedigga on Feb 12, 2017 9:34:24 GMT 10
Oh ok that is very usefull information , it makes sence that it changed course , next thing that gets my brain matter thinking is the age of the changed water course, I know it's over 120 years old due to the fact that the old timers down stream a bit had been digging to the bedrock in the old water course, I might go for a walk up to the side of the mountain where the bedrock is in a peculiar spot and do some crevicing , see what returns it gives back, I have located where the creek branches out into the old bit of creek and where it comes back to join back in , how old do you think it would be ?? And worth investing time into it?
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Post by shivan on Feb 13, 2017 15:35:53 GMT 10
Don't get me wrong, there can be ancient water course's intersecting creeks and rivers, its just a lot harder for us to tell the difference from the existing waterway. In some cases the old timers diverted the natural course of creeks and streams so they could get at good gold ground a bit easier, no idea if this would have any relevance to your area though. I would try having a look into the historical records of the mines and see if there is any info on the area your in, also having a look at the geological report of the area may give you a few more clues. I am no expert but am studying geology, so i think its worth investigating any sort of abnormality in an area  From a gold perspective it cant hurt to try a few pans here and there, thats really what test panning is all about. If panning a new area though just try to be patient and persistent. |
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rustyau
Panner
Prospecting is like fishing. Doing it is the best part. Finding a keeper..is a bonus
Posts: 39 
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Post by rustyau on Mar 19, 2017 5:07:28 GMT 10
Hard to say without the Photos. From my experience if the area has been worked before and rocks look like they have been laid by hand, they probably have been. They would remove them from the work area and stack them to the side out of the way (the Chinese were very pedantic at this). If it is an old river bed then test,test and test. Good luck. Russ
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From a gold perspective it cant hurt to try a few pans here and there, thats really what test panning is all about. If panning a new area though just try to be patient and persistent. 