However, there are radiometric dating methods that can be used on sedimentary rock, including luminescence dating.
All radiometric dating methods measure isotopes in some way.
Some measure the decay of isotopes more indirectly.
For example, fission track dating measures the microscopic marks left in crystals by subatomic particles from decaying isotopes.
Radiocarbon dating measures radioactive isotopes in once-living organic material instead of rock, using the decay of carbon-14 to nitrogen-14.
By clicking on or navigating the site, you agree to allow us to collect information on and off Facebook through cookies.Most directly measure the amount of isotopes in rocks, using a mass spectrometer.Others measure the subatomic particles that are emitted as an isotope decays.These use radioactive minerals in rocks as geological clocks.
The atoms of some chemical elements have different forms, called isotopes.
These break down over time in a process scientists call radioactive decay.