Definition of "volcaniclastic" []

• Being a clastic rock chiefly composed of volcanic materials (adjective)
• A clastic rock chiefly composed of volcanic materials (noun)

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• "Cretaceous-Tertiary volcanic and volcaniclastic rocks rest upon a basement of Paleozoic and Mesozoic sedimentary and metamorphic rocks."
• "The observed kimberlite is dominantly volcaniclastic with abundant limestone and shale xenoliths."
• "In the second hole at CH-32, drilled at an inclination of 65 degrees, both magmatic and volcaniclastic kimberlite were intersected."