Explain how radioactive and radiometric dating are related Sexy live vedio free chate
Fossils are collected along with rocks that occur from the same strata.
These samples are carefully cataloged and analyzed with a mass spectrometer.
They point to a catastrophic origin for granites, consistent with the biblical timeframe for earth history and God’s judgment during the Flood.
In a related article on geologic ages (Ages), we presented a chart with the various geologic eras and their ages.
Radiometric dating is self-checking, because the data (after certain preliminary calculations are made) are fitted to a straight line (an "isochron") by means of standard linear regression methods of statistics.
The slope of the line determines the date, and the closeness of fit is a measure of the statistical reliability of the resulting date.
Most people think that radioactive dating has proven the earth is billions of years old.
The parent isotope is the original unstable isotope, and daughter isotopes are the stable product of the decay. In the first 5,730 years, the organism will lose half of its C-14 isotopes.By comparing this ratio to the half-life logarithmic scale of the parent isotope, they are able to find the age of the rock or fossil in question.There are several common radioactive isotopes that are used for dating rocks, artifacts and fossils. U-235 is found in many igneous rocks, soil and sediment.U-235 decays to Pb-207 with a half-life of 704 million years.
Due to its long half-life, U-235 is the best isotope for radioactive dating, particularly of older fossils and rocks. The half-life of C-14, however, is only 5,730 years.The rate of radioactive decay of various isotopes provide a variety of different timebases for "clocks" that can be used for measuring the ages of samples ranging from as little as a few hundred years (e.g.