Types of radiometric dating methods
For example, in the The decay constant has dimensions of reciprocal seconds.
In the special case in which parent and daughter atoms are present in equal quantities, the age of the specimen is the half-life of the parent isotope: The first assumption, that the amount of the daughter isotope in the original rock is known, is the weakest assumption.
After all, textbooks, media, and museums glibly present ages of millions of years as fact.
Yet few people know how radiometric dating works or bother to ask what assumptions drive the conclusions. This figure wasn’t established by radiometric dating of the earth itself. Radiohalos shouldn’t exist, according to conventional wisdom!
In these cases, lava of a known age of no more than several thousand years (and in one case, no more than ten years) had argon in it when it formed, so that the rock was calculated by K-Ar dating to be millions of years old, even though it was known to be only thousands of years old.
Numerous fossils have been found in strata inconsistent with the evolutionary model of Earth's history.
Though they are very tiny, polonium radiohalos have a huge message that cannot be ignored.
Most people think that radioactive dating has proven the earth is billions of years old.
Other methods such as Potassium-argon dating and Isochron dating are based on faulty assumptions and so unreliable as to be useless.
Many atoms (or elements) exist as numerous varieties called isotopes, some of which are radioactive, meaning they decay over time by losing particles.
If the date generated by isotope dating analysis agrees with the conventional interpretation of the geological column, paleontologists will accept it as valid.
A date that disagrees with that interpretation is dismissed as an anomaly.