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Re: Fin-shaped standing stone
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StoneGloves wrote:
"'Scuse my ignorance but what does lichen show?"

Age. That yellow stuff takes a long time to form and suggests the stone has been there for at least fifty years. There's a succession of lichen species, first you get this one, then this one, then that one. It also shows the air there is free of the common types of pollution, particularly sulphur dioxide.


I guessed age but wasn't sure how - thanks for that.


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fauny fergus
Posted by fauny fergus
28th July 2010ce
20:11

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Re: Fin-shaped standing stone (StoneGloves)

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