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In the New World the term refers to a period when permanent settlements were becoming more common and human groups were making the transition from hunting-and-gathering to agriculture. Bronze Age - A prehistoric period in the Old World, dating roughly from 3000-1000 B. E, defined by the widespread use of bronze as a material for tools, weapons, and ornaments. The lids were usually modeled to represent animal-headed gods or the heads of important people.
Aerial Reconnaissance - The technique of searching for sites and features, both cultural and natural, from the air, often using aerial photography or the human eye.
Bronze is an alloy of copper and either zinc or tin.
Alluvial Deposit - Soil deposited by running water, such as streams, rivers, and flood waters.
More flakes were knocked off from both sides of a stone and there is evidence that the maker had a preconceived notion of the tool's final form.
Acropolis - The "high point" or citadel of an ancient Greek city, like the Acropolis in Athens.
AMS - Accelerator Mass Spectrometry is an absolute dating technique that measures the amount of carbon-14 in an organic object and provides a rough indication of its age. Anthropology - The study of human beings, including their behavior, biology, linguistics, and social and cultural variations.
In the United States, anthropology is divided into four sub-disciplines: archaeology, biological/physical anthropology, cultural anthropology, and linguistics.Alloy - A substance made by the mixture of two or more elements, at least one of which is a metal.Alloys are often stronger and more durable than pure metals.Archaeoastronomy - The study of ancient astronomical knowledge and its role in past cultures. - Before Present; used in age determination instead of B. Balks are often left to aid with stratigraphic analysis.Archaeology - The scientific excavation and study of ancient human material remains. Benchmark - For excavation purposes, a permanent point at a known elevation that can be used to measure other elevations during excavation . Biface tools - Stone tools that have been worked on both sides or faces, meaning that flakes have been intentionally (not naturally) chipped off from both sides of the stone.This is a good way to search for patterns or changes in soil color or plant density (possible indicators of buried features) that may not be visible to a person walking on the ground.