Pipe bore diameter dating
Archeologists frequently encounter distortions, interruptions, and disturbances during excavations.
All workers must be aware of them and of their importance to the final interpretations of the excavation.
Relative dating techniques of stratigraphy, seriation and cross dating as well as absolute dating techniques of dendrochronology, Potassium Argon dating, radiocarbon dating and objects of known age are illustrated with videos and interactives.
(4/30/01) for instance, earlier, later, more recent, and so forth.
These kinds of time relationships between stratified layers are what archeologists call relative time or relative chronology.
Others result from natural phenomena like rain and wind (Orser and Fagan 19).
Each object at an archeological site has a different time relationship with every other object at that site.
Artifacts deposited in one stratum-a more or less homogeneous material, visually separable from other levels by a distinct change in color, texture, or other characteristic-have a distinct relationship with artifacts recovered from strata (plural of stratum) above or below them.
Abstract: There are currently three formula dating techniques available to archaeologists studying 17th and 18th century sites using imported English clay tobacco pipe stems based on Harrington's histogram of time periods; Binford's linear formula Hanson's formulas and the Heighton and Deagan formula.
Pipe stem bore diameter data were collected from 26 sites in Maryland Virginia North Carolina and South Carolina in order to test the accuracy and utility of the three formula dating methods.
Distortions can occur during or after material deposition that may cause strata to disappear in one area of the site and reappear farther along at a different distance from the surface. Landfills, dumps, and landslides or other earth movements may distort a site's stratigraphy.