In archaeology, a prismatic blade is a long, narrow, specialized lithic flake with parallel margins. Prismatic blades are removed from polyhedral blade cores through pressure reduction. This process results in a very standardized finished tool and waste assemblage. While the prismatic blade industry is most often associated with obsidian (especially in Pre-Columbian Mesoamerica), it is not limited to that material; chert, flint, and chalcedony blades are not uncommon.
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Famous quotes containing the words prismatic and/or blade:
“Bribed with a little sunlight and a few prismatic tints, we bless our Maker, and stave off his wrath with hymns.”
—Henry David Thoreau (1817–1862)
“They don’t advertise for killers in the newspaper. That was my profession. Ex-cop. Ex- blade runner. Ex-killer.”
—David Webb Peoples, U.S. screenwriter, and Ridley Scott. Rick Deckard, Blade Runner, reading the newspaper—his opening lines (1982)