What is radioactive dating of fossils Free sex stories
Many geologists claim that radiometric “clocks” show rocks to be millions of years old.
This would be the estimated age of the earliest life or formation of fossils. Uranium 238 is only found in igneous or volcanic rocks. Because of the huge differences in the half lives of Carbon 14 and Uranium238 they cannot be used together.
Carbon-14 has a half-life of 5,730 ± 40 years, meaning that every 5,700 years or so the object loses half its carbon-14.
Samples from the past 70,000 years made of wood, charcoal, peat, bone, antler or one of many other carbonates may be dated using this technique.
Until this century, relative dating was the only technique for identifying the age of a truly ancient object.
By examining the object's relation to layers of deposits in the area, and by comparing the object to others found at the site, archaeologists can estimate when the object arrived at the site.
Carbon 14 can only be used to date fossils of a very recent age.