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Mudstone / claystone?

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    #2
    slowburner
    Moderators, Science, Health & Environment Moderators Posts: 5,220 Mod ✭✭✭✭slowburner


    A variety of sandstone I would think. This particular stone is commonly seen eroding out of coastal dune landscapes along the Irish Eastern seaboard, especially around the North Wexford beaches.


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    #3
    El Siglo
    Registered Users Posts: 3,803 ✭✭✭El Siglo


    It looks like a calcite-cemented sandstone, usually formed in shallow marine environments where calcite formation is usually in-situ owing to a lack of viable transport mechanisms for significant amounts of dissolved calcium carbonate. Within these sandstones calcite cement is usually biogenic carbonate, which is generally interpreted as the dominant source of calcite cement within these sandstone environments. The small holes are worm burrows of some kind, but I can't see the ichnofacies so it's hard to say which worms (also I'm not much of a palaeontologist).


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