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nonvolcanic

a. Not volcanic alt. Not volcanic

Usage examples of "nonvolcanic".

Igneous formations often have strange regularities - like the famous Giants’ Causeway in Ireland-but this stupendous range, despite Lake’s original suspicion of smoking cones, was above all else nonvolcanic in evident structure.

Igneous formations often have strange regularities - like the famous Giants' Causeway in Ireland - but this stupendous range, despite Lake's original suspicion of smoking cones, was above all else nonvolcanic in evident structure.