WebApr 3, 2024 · Bulb. Also called “the bulb of percussion.” The area very close to the edge or margin of the biface where the flake originates due to pressure or percussion work. It can be deep and cause significant … WebFlint blades with bulb of percussion Chipped Stone Blade. Rosh Ein Mor. 19-22-10/92755 Chunks Chipped Stone. Shell heap. 983-21-60/14669 Flint flakes and blades with cortex and bulb of percussion Blade Flake Chipped Stone. Rosh Ein Mor. 30-49-20/C11415 …
The bulb retouchers in the Levant: New insights into Middle ...
WebJul 5, 2024 · The convex part of the bulb of percussion was used to strike the edges of other stone blanks in order to modify their original shape. This function was reconstructed based on the similarities between the marks observed on bulb retouchers and on other types of retouchers, as well as on few experimental studies [ 31 – 33 ]. Flint is very hard, and this means that its edges can be incredibly sharp and resistant to wear. But just as important is its structure. It is mostly a silicon dioxide, as is sandstone or glass, but it has what is known as a crypto-crystalline structure. It is crystalline, but the crystals are so small that they do not deflect … See more So there are lots of them, and they were made over a long period of time. But what can we do with them? The first thing we must do is to recognise them and distinguish them from natural background stone. Stone … See more Dating flint assemblages is usually achieved in two main ways: If we are lucky we may find chronologically sensitive diagnostic pieces, or … See more Hopefully this guide will help in identification of knapped flints, and differentiating natural flints from those that have been purposefully struck. For those who wish to further … See more shari\\u0027s the dalles or
British Flint and Percussion Arms - Page 99 - British Militaria …
WebMar 28, 2024 · The bulb of percussion has been removed/snapped off and two burin spalls have been struck down the thinner lateral edge from the side of the platform, ending with classic hinge terminations, the steeper of the lateral edges has been finely retouched on the dorsal face edge, the thinner of the lateral edges is damaged and may have been … WebA bulb of percussion - this is a smooth rounded knob at one end where the flint has been struck away from the main piece. You may also see concentric ripples from this point. Retouching on the edges - this is where the tool has been sharpened or blunted for use. … WebBulb of Percussion – The swollen area (rounded raised area) on a surface where it meets the striking platform. Caused by the force of the strike from stone working tool. The bulb of percussion is the primary feature that identifies the ventral surface of … pop singer vannelli crossword clue