Radiocarbon dating thermoluminescence
The age range for pottery and other ceramics covers the entire period in which these materials have been produced.The typical range for burnt stone or sediment is from about 100 to 300,000 years.When pottery gets covered in the ground, radiation from the earth starts to energize (excite) the electrons of these crystalline materials, putting them into “trap states.” This is a measure of the radiation dose.The longer the pottery is in the ground, the more radiation dose it will absorb, causing more electrons to be excited into trap states.Thermoluminescence (TL) dating of sediments depends upon the acquisition and long term stable storage of TL energy by crystalline minerals contained within a sedimentary unit.
They divide this by an assumed radiation dose rate (RDR) to estimate the pottery’s age.To obtain a truly absolute chronology, corrections must be made, provided by measurements on samples of know age.The most suitable types of sample for radiocarbon dating are charcoal and well-preserved wood, although leather, cloth, paper, peat, shell and bone can also be used.Application of this method of age determination is limited to those periods of pottery and fired clay availability ( from about 6000 BC to the present). 50 Denison Drive Guilford, CT 06437 (203) 453-3299 University of Hawai'i Hawai'i Institute of Geophysics and Planetology 2525 Correa Road Honolulu, HI 96822 (808) 956-8761 FAX (808) 956-3188 University of Washington Luminescence Laboratory, DH-05 Seattle, WA 98195 (206) 543-1506 FAX (206) 543-3285 American Council of Independent Laboratories 1629 K Street, NW Washington, DC 20006 (202) 887-5872 FAX (202)887-0021 E-mail: [email protected] of independent testing, research and inspection laboratories. 101 West Edison Avenue, Suite 250 Appleton, WI 54915 (920) 749-3040 FAX (920) 749-3046 Testing and analysis for the pulp, paper, and allied industries. FAO/IAEA International Symposium on Managing Soils for Food Security and Climate Change Adaptation and Mitigation, Vienna, Austria 23-27 July 2012 Hua, Quan. Radiocarbon: A chronological tool for the recent past.
Radiocarbon WEB-info Provides a large international listing of laboratories that do radiocarbon dating; information on radiocarbon dating; publications and references; and educational materials. The Smithsonian Institution, Museum Conservation Institute (MCI), gives no endorsements for any products, materials or services mentioned in this pamphlet and is not responsible for problems from their use or misuse.
Because of the somewhat short half-life of 14C, radiocarbon dating is not applicable to samples with ages greater than about 50,000 years, because the remaining concentration would be too small for accurate measurement.