PreviousClocks in the Rocks
http://hyperphysics.phy-astr.gsu.edu/hbase/nuclear/clkroc.htmlRadioactive decay processes have proven particularly useful in radioactive dating for geologic processes. Uranium-lead, potassium-argon, and rubidium-strontium dating.
Submitted in section: Archaeology: Methodology: Dating: Clocks in the Rocks