Difference between relative and radiometric dating of fossils

20-Nov-2019 05:14

The radiocarbon dating method is based on the fact that radiocarbon is constantly being created in the atmosphere by the interaction of cosmic rays with atmospheric nitrogen.The resulting radiocarbon combines with atmospheric oxygen to form radioactive carbon dioxide, which is incorporated into plants by photosynthesis; animals then acquire in a sample from a dead plant or animal such as a piece of wood or a fragment of bone provides information that can be used to calculate when the animal or plant died.

All the fossil wood samples were from short broken lengths of what were probably branches of trees fossilised .

The carbon-14 decays with its half-life of 5,700 years, while the amount of carbon-12 remains constant in the sample.