SYNONYMS OR RELATED TERMS: chronometric dating; absolute dates; absolute chronology; absolute age determination (antonym: relative dating)CATEGORY: chronology; technique DEFINITION: The determination of age with reference to a specific time scale, such as a fixed calendrical system or in years before present (B.
This mortality pattern is based on bone- or tooth-wear analysis.
It demonstrates a natural" age distribution in which the older the age group the fewer the individuals it has."CATEGORY: feature DEFINITION: A technical term of ancient Roman roadwork for an earthen mound, embankment, or rampart of a camp, formed by the earth dug out of a ditch.
Most Roman roads were built on a slightly raised causeway, mainly to provide drainage.
This bank of earth was used for protection from flooding, as the foundation for a road, or for warfare purposes.
Agger is also a general term for a mound formed by a dike, quay, roadwork, or earthwork.
An agger can often be traced even if the surfacing material has been covered or laid bare.
SYNONYMS OR RELATED TERMS: formerly Girgenti, Greek Acragas or Akragas, Latin Agrigentum; also Agrigagas CATEGORY: site DEFINITION: A wealthy, flourishing Greek and Roman city near the southern coast of Sicily, Italy, originally a colony of Gela and founded by Greeks about 580 .
The plateau site of the ancient city has extraordinarily rich Greek remains.
There are extensive walls with remnants of eight gates and the remains of seven Doric temples, but there has been illegal construction in which the ruins were quarried, so little is standing where some of the buildings once were.