Isochron Dating

Carbon dating and other cosmogenic methods The occurrence of natural radioactive carbon in the atmosphere provides a unique opportunity to date organic materials as old as roughly 60, years. Unlike most isotopic dating methods, the conventional carbon dating technique is not based on counting daughter isotopes. It relies instead on the progressive decay or disappearance of the radioactive parent with time.

Newly created carbon atoms were presumed to react with atmospheric oxygen to form carbon dioxide CO2 molecules.

Radiometric dating or radioactive dating is a technique used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they were formed. The method compares the abundance of a naturally occurring radioactive isotope within the material to the abundance of its decay products, which form at a known constant rate of decay.

Fertility also declines in men, and I would estimate that as women age so do their partners, multiplying the chances of infertility further. Since you talk about the poor paying for the rich it would be interesting to see, if data allowed. Great post by the way. The 2nd chart scared me a little, since my girlfriend and I want kids, but not till an unspecified but faraway time later.

If it was ensured that all women tried by the same means, then still the y-axis is misleading. DK I was always curious about differentials in newborn problems both developmental and genetic between mother and father ages. Plus the probability of gestation-related problems probably increases significantly with age. With the sperm however, there is the issue of germline mutations.

Particularly, I imagine, large scale aberrations during meiosis. There must be a huge amount of data with regard to child health as a function of parents age. Only question is, has anyone bothered to collect it?