When finding the age of an organic organism we need to consider the half-life of carbon 14 as well as the rate of decay, which is –0.693.For example, say a fossil is found that has 35% carbon 14 compared to the living sample. We can use a formula for carbon 14 dating to find the answer.
See table 3.8 Using data from table 2 (excluding the Septuagint calculations and including Jones and Ussher), the average date of the creation of the earth is 4045 B. This still yields an average of about 6,000 years for the age of the earth.
Cultures throughout the world have kept track of history as well.
Floyd Jones4 and a much earlier book by Archbishop James Ussher5 (1581–1656). The misconception exists that Ussher and Jones were the only ones to arrive at a date of 4000 B. Jones6 lists several chronologists who have undertaken the task of calculating the age of the earth based on the Bible, and their calculations range from 5501 to 3836 B. Because of this, the Septuagint adds in extra time.
Though the Samarian and Masoretic texts are much closer, they still have a few differences.
Pièrre La Place imagined an indefinite but very long history.
And Jean Lamarck also proposed long ages.11 However, the idea of millions of years really took hold in geology when men like Abraham Werner, James Hutton, William Smith, Georges Cuvier, and Charles Lyell used their interpretations of geology as the standard, rather than the Bible.
So, the fossil is 8,680 years old, meaning the living organism died 8,680 years ago.
The question of the age of the earth has produced heated discussions on Internet debate boards, TV, radio, in classrooms, and in many churches, Christian colleges, and seminaries. Let’s give a little history of where these two basic calculations came from and which worldview is more reasonable. Of course, the Bible doesn’t say explicitly anywhere, “The earth is 6,000 years old.” Good thing it doesn’t; otherwise it would be out of date the following year.
Another expectation is that there should be some discrepancies about the age of the earth among people as they scattered throughout the world, taking their uninspired records or oral history to different parts of the globe.