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Challenge! Explain the formation of this rock.

  • 08-09-2022 9:53am
    #1
    Coles
    Registered Users, Registered Users 2 Posts: 1,021 ✭✭✭


    Here's an idea. Post up pictures of rocks and see if any one can explain their formation, processes, climate, age, possible location, etc.

    I'll get the rock rolling with this one... A conglomerate.

    image.png




Comments

  • #2
    Wanderer78
    Registered Users, Registered Users 2 Posts: 30,439 ✭✭✭✭Wanderer78


    are they formed by glacial action?



  • #3
    slowburner
    Moderators, Science, Health & Environment Moderators Posts: 5,223 Mod ✭✭✭✭slowburner


    Millstone grit. North Dublin or Waterford?



  • #4
    Coles
    Registered Users, Registered Users 2 Posts: 1,021 ✭✭✭Coles


    Yes indeed. This sample found in the King's River valley, Co Wicklow. Presumably carried and dropped by the ice sheet.

    Formed 300 million years ago in Britain/Ireland which was then the delta of a massive river system that drained from Scandinavia.



  • #5
    Coles
    Registered Users, Registered Users 2 Posts: 1,021 ✭✭✭Coles


    Here's the next one.

    These stones were picked out of glacial deposits in northwest County Wicklow.

    But what are they? How were they formed, and where did they come from?


    20221021_163900.jpg




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