It often lies in columnar strata, as at the Giant's Causeway in Ireland and Fingal's Cave in the Hebrides.It is greenish- or brownish-black and much like lava in appearance. SYNONYMS OR RELATED TERMS: Bet She'an, Baysan (Arabic), Beisan (modern); Scythopolis CATEGORY: site DEFINITION: A very large tell of northeastern Israel, site of one of the oldest inhabited cities of ancient Palestine.: our next report concerns a new technology that may give rise to very positive outcomes in treating cancer; a super-fine camera capable of visualizing a single cell.and most refined of the radiometric dating schemes.A layer in which archaeological material -- as artifacts, skeletons, and dwelling remains -- is found during excavation.It is the more or less homogeneous or gradational material, visually separable from other levels by a discrete change in the character of the material being deposited or a sharp break in deposition (or both). strata; layer CATEGORY: geology DEFINITION: The definable layers of archaeological matrix or features revealed by excavation; units of sedimentation greater than one centimeter thick.
SYNONYMS OR RELATED TERMS: strata, stratum CATEGORY: geology DEFINITION: A unit of stratigraphy, greater than 1 centimeter thick, often part of a bed.
Basing on this principle, the cultural assemblages found in different layers can be assigned a chronological personality. In practice it is found that the mounds are disturbed9 by all sorts of pits and dumps.
For example, if the cultural contents of the lower deposit are Mauryan in character, appropriately this deposit may be assigned a date between 400-200 B. Similarly, if the cultural equipment of the upper deposit are of the Sunga period, this deposit has to placed between 200-73 B. Quite often, the archaeologist decided the change of stratum on the basis of the feed of the deposit.
the determination of the chronology of events studied from archaeological data.
Two systems of archaeological dating are used: absolute and relative chronology.