Metavolcanic rock
Metavolcanic rocks are volcanic rocks that have experienced metamorphism. In other words, the rock was originally produced by a volcano, either as lava or tephra.
Metavolcanic rocks are volcanic rocks that have experienced metamorphism. In other words, the rock was originally produced by a volcano, either as lava or tephra.
Metavolcanic rocks are volcanic rocks that have experienced metamorphism. In other words, the rock was originally produced by a volcano, either as lava or tephra.
Source: Wikipedia "Metavolcanic rock" · CC BY-SA 4.0
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