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:
“Then a small rainbow like a trellis gate,
A very small moon-made prismatic bow,
Stood closely over us through which to go.”
—Robert Frost (1874–1963)
“I would not knock old fellows in the dust
But there lay Captain Carpenter on his back
His weapons were the old heart in his bust
And a blade shook between rotten teeth alack.”
—John Crowe Ransom (1888–1974)