Siege once broken, involving cold study of rock structures? - Crossword Clue

Below are possible answers for the crossword clue Siege once broken, involving cold study of rock structures?.

10 letter answer(s) to siege once broken, involving cold study of rock structures?

GEOSCIENCE
  1. any of various sciences, as geography, geology, or meteorology, that deal with the earth, its composition, or any of its changing aspects.

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