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In the early part of the 20th century, scientists still weren’t sure how old Earth is.Nowadays, scientists use radiometric dating of various sorts of rock – both earthly and extraterrestrial – to pinpoint Earth’s age.This work gave rise to a process known as radiometric dating.This technique is based on a comparison between the measured amount of a naturally occurring radioactive element and its decay products, assuming a constant rate of decay – known as a half-life.By the early 1960s, most of the major radiometric dating techniques now in use had been tested and their general limitations were known.No technique, of course, is ever completely perfected and refinement continues to this day, but for more than two decades radiometric dating methods have been used to measure reliably the ages of rocks, the Earth, meteorites, and, since 1969, the Moon.

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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.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.he question of the ages of the Earth and its rock formations and features has fascinated philosophers, theologians, and scientists for centuries, primarily because the answers put our lives in temporal perspective.Until the 18th century, this question was principally in the hands of theologians, who based their calculations on biblical chronology.James Hutton, a physician-farmer and one of the founders of the science of geology, wrote in 1788, “The result, therefore, of our present inquiry is, that we find no vestige of a beginning, — no prospect of an end.” Although this may now sound like an overstatement, it nicely expresses the tremendous intellectual leap required when geologic time was finally and forever severed from the artificial limits imposed by the length of the human lifetime.By the mid- to late 1800s, geologists, physicists, and chemists were searching for ways to quantify the age of the Earth.Many great thinkers throughout history have tried to figure out Earth’s age.For example, back in 1862, Lord Kelvin calculated how long Earth might have taken to cool from its original molten state.

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  1. Jul 9, 2007. There are more than 70 meteorites, of different types, whose ages have been measured using radiometric dating techniques. The results show that the meteorites, and therefore the Solar System, formed between 4.53 and 4.58 billion years ago. The best age for the Earth comes not from dating individual.

  2. Oct 27, 2017. “Science has proved that the earth is 4.5 billion years old.” We have all heard this claim. We are told that scientists use a technique called radiometric dating to measure the age of rocks. We are. The former quantities are physical properties that can be directly measured using the right equipment. But age.

  3. G. Brent Dalrymple's classic debunking of the young-earth 'scientific' creationism's dating methods with a short explanation of how geologists know the age of the. This correction is easily made by measuring the amount of 36Ar present and, using the known isotopic composition of atmospheric argon 40Ar/ 36Ar = 295.5.

  4. Mar 12, 2010. Scientists find the age of the Earth by using radiometric dating of rocks from Earth and space.

  5. The geological time scale and an age for the Earth of 4.5 b.y. rely heavily on the uranium/thorium/lead radiometric dating methods.1,2,3 Because it is not. It might be argued that although radiometric dating has a few problems, the large body of concordant data using different isotopes shows that the dates are of the right.

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