47. Which method of absolute dating is most commonly used to date organic remains (charcoal, bone, seeds) from prehistoric sites in AP, and what is its effective dating range?
Radiocarbon dating (C-14) is the most commonly used absolute dating method for organic materials (charcoal, burnt bone, seeds, shell) from prehistoric sites in AP. It is based on the decay of radioactive carbon-14 isotope in organic materials. Its effective range is approximately up to 50,000 years before present. For AP prehistoric sites: Neolithic charcoal samples from ash mounds have been C-14 dated to 3000–1500 B.C.; Megalithic charcoal from burial contexts is dated to 1000–200 B.C. Other methods used include: Optically Stimulated Luminescence (OSL) for sediments; K-Ar for very ancient geological contexts (Palaeolithic); Thermoluminescence (TL) for pottery.