Start Relative dating cross cutting

Relative dating cross cutting

One year later Boltwood (1907) developed the chemical U-Pb method. By combining Von Weizsacker’s argon abundance arguments with Kohlhorster’s observation that potassium emitted gamma-radiation, Bramley (1937) presented strong evidence that potassium underwent dual decay.

Of course, this was a close as Kelvin ever came to publicly recanting his position.

Later, after radioactivity had been proven to be a significant source of the Earth's internal heat, he did privately admit that he might have been in error.

If magnetic fluxuations or other influencing forces are strong enough, radiometric decay rates could be much more significantly effected.

In short, the assumption that decay rates are immune to outside influences isn't as solid as it once appeared to be.

The solar estimate was based on the idea that the energy supply for the solar radioactive flux is gravitational contraction.

These two independent and agreeing dating methods for of the age of two primary members of the solar system formed a strong case for the correctness of his answer within the scientific community.

Some, like Robert Gentry, have even argued that Radio-halos from rapidly decaying radioactive isotopes in granite seem to indicate that the granites were formed almost instantly.