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Knapping is the shaping of flint, chert, obsidian, or other conchoidal fracturing stone through the process of lithic reduction to manufacture stone tools, strikers for flintlock firearms, or to produce flat-faced stones for building or facing walls, and flushwork decoration.
Production of points & spearheads from a flint stone core, Levallois technique, Mousterian culture, Tabun Cave, Israel, 250,000–50,000 BP. Israel Museum The Levallois technique of flint- knapping The Levallois technique ( IPA: [lÉ™.va.lwa] ) is a name given by archaeologists to a distinctive type of stone knapping developed around 250,000 to ...
A conchoidal fracture is a break or fracture of a brittle material that does not follow any natural planes of separation. Mindat.org defines conchoidal fracture as follows: "a fracture with smooth, curved surfaces, typically slightly concave, showing concentric undulations resembling the lines of growth of a shell". [1]
The prepared-core technique is a means of producing stone tools by first preparing common stone cores into shapes that lend themselves to knapping off flakes that closely resemble the desired tool and require only minor touch-ups to be usable.
This is an accepted version of this page This is the latest accepted revision, reviewed on 18 December 2024. Classified advertisements website Craigslist Inc. Logo used since 1995 Screenshot of the main page on January 26, 2008 Type of business Private Type of site Classifieds, forums Available in English, French, German, Dutch, Spanish, Italian, Portuguese Founded 1995 ; 29 years ago (1995 ...
PHOTO: One person was injured when a holiday drone show in Orlando on Dec. 21, 2024, went haywire and several of the unmanned aerial devices crashed into each other and plummeted to the ground ...
Mackenzie Root, 24, welcomed her daughter on Oct. 7 at Lakenau Medical Center — the next day, Alysha Orsine, 30, who works as a nurse at the same hospital, gave birth to her bundle of joy
With four weeks left in the NFL regular season, only four teams have clinched playoff spots. But several more could join them in Week 15.