How is Rock Art aged?

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tiompan T
tiompan Dec 19, 2012 18:52:21
Replying to bladup

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 .

B bladup
bladup Dec 19, 2012 19:04:12
Replying to tiompan

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.