Radioisotopic dating method currently used
The calculated ages for all the individual samples from the dating method turned out to be vastly different (see box, “Calculating the ages”, below), even for those closely spaced samples from the same outcrop of the same lava flow.
The results are not even close to each other, although the samples should all have given the same age.
Click image to view full-size Figure 2: Schematic geologic diagram of the rock layers in Grand Canyon.
The number of parent atoms originally present is simply the number present now plus the number of daughter atoms formed by the decay, both of which are quantities that can be measured.
Samples for dating are selected carefully to avoid those that are altered, contaminated, or disturbed by later heating or chemical events.
The radioactive parent elements used to date rocks and minerals are: Radiometric dating using the naturally-occurring radioactive elements is simple in concept even though technically complex.
If we know the number of radioactive parent atoms present when a rock formed and the number present now, we can calculate the age of the rock using the decay constant.
Rafting through Grand Canyon, northern Arizona, is a most exhilarating and enjoyable experience.
Deep below the rim, the crystalline basement rocks tower above the turbulent Colorado River.
In addition to the ages of Earth, Moon, and meteorites, radiometric dating has been used to determine ages of fossils, including early man, timing of glaciations, ages of mineral deposits, recurrence rates of earthquakes and volcanic eruptions, the history of reversals of Earth's magnetic field, and the age and duration of a wide variety of other geological events and processes.
The radioisotope methods, long touted as irrefutably dating the earth as countless millions of years old, have repeatedly failed to give reliable and meaningful absolute ages for Grand Canyon rocks.
argon) and its corresponding “parent” isotope (e.g. However, before this calculation can be made, it is necessary to assume how much of the “daughter” and “parent” were present when the rock formed.
It is also necessary to assume that no isotopes were gained or lost over time and that the rate of radioactive decay has remained constant at the very slow rate measured today.
Official publications say these rocks are more than a billion years old, but when the methods used to date them are carefully examined, a totally different story is discovered.