Archaeological dating labs
Most porcelain dating is done for insurance purposes on broken objects.Much stoneware is not so hard as porcelain and may be sampled by drilling.
It is an absolute dating method, and does not depend on comparison with similar objects (as does obsidian hydration dating, for example). When pottery is fired, it loses all its previously acquired TL, and on cooling the TL begins again to build up. By comparing this light output with that produced by known doses of radiation, the amount of radiation absorbed by the material may be found.Please contact the GSA with questions and requests at [email protected] 206-685-6650 or view the Archy GSA website (requires UW Net ID). The age of the pottery, in principle, may then be determined by the relation Age = Accumulated dose / Dose per year Although conceptually straightforward, TL has proven to to be far from simple in practice.