Search results
Results from the WOW.Com Content Network
The source of obsidian for cultures inhabiting the territory of and around Greece was the island of Milos; the Starčevo–Körös–Criș culture obtained obsidian from sources in Hungary and Slovakia, while the Cardium-Impresso cultural complex acquired obsidian from the island outcrops of the central Mediterranean.
Sharpened metal drop-point blade Naturally occurring sharp obsidian piece Shark tooth with a sharp, serrated edge A sewing needle comes to a sharp point. Sharpness refers to the ability of a blade, point, or cutting implement to cut through materials with minimal force, and can more specifically be defined as the capacity of a surface to initiate the cut. [1]
Despite being sharper, prismatic obsidian is also considerably more brittle than steel; obsidian blades of the type used on the macuahuitl tended to shatter on impact with other obsidian blades, steel swords or plate armour. Obsidian blades also have difficulty penetrating European mail. The thin, replaceable blades used on the macuahuitl were ...
A modern recreation of a ceremonial Mesoamerican macuahuitl, edged with obsidian. Obsidian, used by Native Americans for knives, spearheads, and arrowheads. This natural glass chips sharper than other stones but is more brittle. Other hard stones such as flint, chert, radiolarite, chalcedony, basalt, and quartzite.
Because obsidian is not natural to Belize, the site of excavation, the obsidian cores were the product of transactions between the Mayans and those in present-day Honduras, Mexico and Guatemala. Obsidian blades are the sharpest natural cutting edges known, and after the lithic reduction already fractured blades, the triangular heads were produced.
The analysis of obsidian debitage can reveal whether or not prismatic blade production occurred at a site and, if it had, what stages of production the process included. In other words, the types of manufacturing waste present (e.g., rejuvenation flakes and/or blades, platform rejuvenation flakes, etc.) at a site can inform archaeologists about ...
Next, thrust in an inward and upward motion on the diaphragm. This will force air out of the lungs and remove the blockage. Repeat these abdominal thrusts up to five times, the doctor advised.
Weapons were crafted mostly from obsidian and chert, obsidian being the sharpest (but more brittle). Knapping chert or obsidian into bifacial projectile points and attaching them to atlatl darts, spears, and arrows was the dominant technology.