5 photos in 3 sub-albums
They are the result of cataclastic phenomena (crushing, attrition, smoothing, polishing..)
They have the mineralogical composition of the substrate they degrade.
They are often associated with other structures (crystallization, dissolution).
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AIII1 - on sandstone
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AIII2 - on conglomerate
20 photos in 13 sub-albums
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AIII3 - on limestone/dolomite
14 photos in 6 sub-albums
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AIII4 - on clay
50 photos in 26 sub-albums
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AIII5 - on granite
7 photos in 3 sub-albums
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AIII6 - on metamorphic rocks
7 photos in 4 sub-albums