Any geologic feature that cross-cuts across strata must have formed after the rocks they cut through were deposited. Stimulating these mineral grains using either light optically stimulated luminescence or infrared stimulated luminescence dating or heat thermoluminescence dating causes a luminescence signal to be emitted as the stored unstable electron energy is released, the intensity of which varies depending on the amount of radiation absorbed during burial and specific properties of the mineral. Figure 2: The rate of creation of carbon appears to be roughly constant, as cross-checks of carbon dating with other dating methods show it gives consistent results. Carbon is a radioactive isotope of carbon, with a half-life of 5, years,   which is very short compared with the above isotopes and decays into nitrogen. Carlson December
Radiometric dating Conservation and restoration.
Dating Rocks and Fossils Using Geologic Methods
Springer Netherlands. So, they do this by giving off radiation. What is Radioactive Dating? Using the overlapping age ranges of multiple fossils, it is possible to determine the relative age of the fossil species i. Online Textbook Help. Well, a simple explanation is that it is the time required for a quantity to fall to half of its starting value. Davis