Pyroclastic 1


Pyroclastic 1 :

The word pyroclastic is derived from two Greek words meaning "fire" and "broken". It refers to volcanic particles formed by the fragmentation of magma. The smallest fragments (less then 2 mm in diameter) are called ash. Fragments between 1mm and 1cm in diameter are called lapilli. Larger fragments are called blocks if they were solid at the time they were fragmented and bombs if they were liquid

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