- In the context of archaeology, this term refers to thin, flat pieces of stone intentionally removed from a tool or core during the process of stone tool manufacture.
- Separating into thin flattened pieces or layers.
- Portions of objects that are torn, broken off from, or dislocated from their original whole.
- Refers to the cultures of the areas surrounding the Mediterranean Sea, which is bordered by Europe, Asia, and Africa. It particularly refers to the island cultures and those on the mainland of Europe and Asia Minor that border the Mediterranean Sea. It includes cultures that developed in and around the Tyrrhenian, Ionian, Ligurian, Adriatic, and Aegean seas.
- A dark, shiny glass formed in nature by the rapid cooling of lava. Obsidian is widely distributed and has been used since Paleolithic (before 3500 BCE) times for mirrors, weapons, tools, and jewelry. Obsidian is often black in color but may also be red, brown or green. It produces conchoidal fractures when cleaved. Sources of obsidian include Anatolia, Armenia, Ethiopia, Greece (Milos), Italy (Lipari, Eolie), Iceland, the U.S. (Wyoming), Mexico (Teotihuacan), Guatemala (Tikal), and Peru. Obsidian changes into pumice when it is melted.
- General term for rock that has been cut, shaped, crushed, or otherwise formed for use in construction or other purposes. Includes the specific archaeological and anthropological sense of individual stones which may be decorated or ornamented and which may be used in ritual contexts. These are usually not carved or dressed, and so differ from sculptures made from stone.
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