• Question: How many types of rocks are there in ireland?

    Asked by science master to Tiernan, Sonia, Mossy, Maureen on 6 Nov 2018. This question was also asked by 325nenp43.
    • Photo: Tiernan

      Tiernan answered on 6 Nov 2018:

      There are three rock types: igneous, metamorphic & sedimentary and all of them are in Ireland. The oldest rocks are at Inishtrahull island off Donegal – they’re about 1600 million years old, Belmullet in Mayo is more than 1000 million years old, and some rocks in Killmore Quay in Wexford are probably around that age too. These old rocks are complex and they’ve been heated up, squeezed, stretched, bent and broke but they’re still here. The most common rock type in Ireland is limestone – it makes up more than 40% of the land and it is between 300-400 million years old.

    • Photo: Sonia Lenehan

      Sonia Lenehan answered on 15 Nov 2018:

      Tiernan answered this amazingly! 🙂

    • Photo: Maureen

      Maureen answered on 15 Nov 2018:

      Tiernan did a great job here. All I could add would be a neat map of different rocks in Ireland! They’re neat!

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