This article lists 16 methods https://en.m.wikipedia.org/wiki/Geochronology https://en.m.wikipedia.org/wiki/Geochronology Some fill,the gap between radio carb

This article lists 16 methods https://en.m.wikipedia.org/wiki/Geochronology https://en.m.wikipedia.org/wiki/Geochronology Some fill,the gap between radio carbon and longer lived isotopes.