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marronman

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aadenny

Marbled sandstone?

Today I came across a sandstone hill which has been cut to make a road, and the cross-section of sandstone has occasional hard white layers typically an inch or two thick, looking a bit like marble,...
02:38 Mon 23rd Dec 20022 answers, last by marronman 16:16 Thu 18th Mar 2004

Only 1 question