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Unusual erosive forces?
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09-06-2016 11:28am#1This stone exhibits signs of quite unusual (?) erosive processes, believed to be formed by freeze/thaw action. This type of fracturing is commonly known in the UK as 'pot lids'.
Can anyone offer a description of how exactly these processes operate, and how they came to form this pattern? Not too sure of the precise petrology, but it is probably a fine grained sandstone. The original colour can be seen in the uppermost central 'pot lid'.
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Wild guess. Small rounded depressions. Rain pits. Rain drips on exposed sediment surface. When sediment newly forming. Drying flood plains.
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Moderators, Category Moderators, Science, Health & Environment Moderators, Society & Culture Moderators, Regional East Moderators, Regional Midlands Moderators, Regional Midwest Moderators, Regional Abroad Moderators, Regional North Mods, Regional West Moderators, Regional South East Moderators, Regional North East Moderators, Regional North West Moderators, Regional South Moderators Posts: 9,001 CMod ✭✭✭✭ Join Date:Posts: 8833
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