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Q&A What is my bedrock?

I'm looking for a rock from which my island is constructed. It needs to be: Either created from the sea or via intense pressure/heat Capable of trapping layers of gas beneath it White(ish) I wa...

2 answers  ·  posted 10y ago by Liath‭  ·  last activity 5y ago by Liath‭

Question earth-like reality-check geology earth