Process o radioactive dating
To use this interactive, move your mouse or finger over any of the labelled boxes and click to obtain more information.The Wairau Bar in Blenheim is one of the oldest archaeological sites in New Zealand.
Mikhail Marov of the Vernadsky Institute of Geochemistry and Analytical Chemistry said scientists had determined the meteorite's age by observing the amount of radioactive isotopes and their decay byproducts, a technique called of a granodiorite at the Cuttaburra A prospect indicates that this mineralised system may be Middle Silurian in age and thus indicating that the host rocks are older than those hosting the Cobar-type deposits.
Historical artefacts like moa bones can be dated using a technique that measures the activity of the radioisotope carbon-14 still present in the sample.
By comparing this with a modern standard, an estimate of the calendar age of the artefact can be made.
Others measure the subatomic particles that are emitted as an isotope decays.
Some measure the decay of isotopes more indirectly.