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How is Rock Art aged?
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bladup
bladup
1986 posts

Re: How is Rock Art aged?Moving On
Dec 19, 2012, 19:04
tiompan wrote:
bladup wrote:
only Soft sandstone in 10 mins, that's about it, other stone would take a good bit longer than that.


10 minutes on schist which is quite a bit harder than sandstone .

You'd have thought it would be harder, i bet it surprised you? the same type rocks can be so different though [soft to hard], good going though eh.
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