Why is potassium argon dating useful for dating hominids Welcome to miss alexa zz video chat
Though we know that K-Ar dating works and is generally quite accurate, however, the method does have several limitations.
Volcanic material is the ideal subject of potassium-argon dating because it is a closed system - there is none of the daughter element present when the material is formed to contaminate measurements.
Over the past 60 years, potassium-argon dating has been extremely successful, particularly in dating the ocean floor and volcanic eruptions.
K-Ar ages away from spreading ridges, just as we might expect, and recent volcanic eruptions yield very young dates, while older volcanic rocks yield very old dates.
of grains between top and bottom is always proportional to the time elapsed.
In principle, the potassium-argon (K-Ar) decay system is no different.