volcaniclastic

volcaniclastic
   (adjective)
   Pertaining to the entire spectrum of fragmental materials with a preponderance of clasts of volcanic origin. The term includes not only pyroclastic materials but also epiclastic deposits derived from volcanic source areas by normal processes of mass movement and stream erosion. Examples: welded tuff, volcanic breccia, lahar deposit.
   HP

Glossary of landform and geologic terms. 2013.

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