Dating uranium 235
Carbon dating is used to determine the age of biological artifacts up to 50,000 years old.
This technique is widely used on recent artifacts, but educators and students alike should note that this technique will not work on older fossils (like those of the dinosaurs alleged to be millions of years old).
This age was based on the belief that the rate of decay has been constant, and that Uranium 238 will be present in a known ratio to Uranium 235.
The varying quantities of these isotopes call into question the calculated age of the solar system, since “one of the equation’s assumptions — that certain kinds of uranium always appear in the same relative quantities in meteorites — is wrong.” CAIs are “calcium-aluminum-rich inclusions” found in the meteorite.
The differing amounts of material that were found in separate samplings of the same meteorite were unexpected.
Therefore, without accurately known decay half-lives, all radioisotope ages cannot be accurately determined or be considered absolute ages. This technique is not restricted to bones; it can also be used on cloth, wood and plant fibers.Carbon-14 dating has been used successfully on the Dead Sea Scrolls, Minoan ruins and tombs of the pharaohs among other things. The half-life of carbon-14 is approximately 5,730 years. dinosaurs the evolution alleges lived millions of years ago.Now since all rocks are somewhat porous, and since we are pretty much obliged to date rocks from near the surface, it's hard to find instances in which uranium has not been lost.; as you can see from its chemical formula, it is one of the silicate minerals.