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.

Glossary of landform and geologic terms. 2013.

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  • volcaniclastic — /vol kan i klas tik/, adj. Geol. pyroclastic. Also, volcanoclastic /vol kan euh klas tik/. [1960 65; b. VOLCANIC and CLASTIC] * * * …   Universalium

  • volcaniclastic — adjective A clastic rock chiefly composed of volcanic materials See Also: metamorphiclastic, pyroclastic, sedimentaclastic …   Wiktionary

  • volcaniclastic — /vol kan i klas tik/, adj. Geol. pyroclastic. Also, volcanoclastic /vol kan euh klas tik/. [1960 65; b. VOLCANIC and CLASTIC] …   Useful english dictionary

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