What is the use of radiometric dating Analdating uk
But Earth’s layers of rock did not give up the secret of Earth’s age easily. However, from working with layer upon layer of rock laid down on Earth over long time spans, early 20th century scientists came to believe Earth not of atoms of one chemical element into another.They led to the discovery that certain very heavy elements could decay into lighter elements – such as uranium decaying into lead.Likewise, scientists use radiometric dating to determine the ages of moon rocks, obtained by astronauts.Taken together, these methods give results that suggest an age for our Earth, meteorites, the moon – and by inference our entire solar system – of 4.5 to 4.6 billion years old.
Over the decades of the 20th century, scientists documented tens of thousands of radiometric age measurements.
He concluded that Earth was born 20 to 400 million years ago.
Today’s scientists believe that answer is incorrect, but Kelvin’s calculations were in being based on logical thinking and mathematical calculation.
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Taken as a whole, these data indicate that the Earth’s history extends backward from the present to at least 3.8 billion years into the past.