We wouldn''t be dating the artifact – we'd be dating the rock and the rock might have formed millions of years earlier.
his document discusses the way radiometric dating and stratigraphic principles are used to establish the conventional geological time scale.
The question should be whether or not carbon-14 can be used to date any artifacts at all? There are a few categories of artifacts that can be dated using carbon-14; however, they cannot be more 50,000 years old.
As an example of how they are used, radiometric dates from geologically simple, fossiliferous Cretaceous rocks in western North America are compared to the geological time scale.
This rules out carbon dating for most aquatic organisms, because they often obtain at least some of their carbon from dissolved carbonate rock.
The age of the carbon in the rock is different from that of the carbon in the air and makes carbon dating data for those organisms inaccurate under the assumptions normally used for carbon dating.
This restriction extends to animals that consume seafood in their diet.
Geologists generally know the age of a rock by determining the age of the group of rocks, or formation, that it is found in.