Lapilli (redirected from Acretionary lapilli)
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Related to Acretionary lapilli: lapillus
Pyroclasts that range from 0.04 to 2.6 inches (1 to 64 millimeters) in diameter.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
small rounded or irregularly shaped pieces of lava between the size of a pea and a walnut, ejected together with volcanic bombs and ash during volcanic eruptions. They are chunks of lava that have solidified in flight or fragments of volcanic and wall rock through which the eruption passed and which solidified earlier.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.