Carbon dating fossils evolution

26-Feb-2020 23:11 by 3 Comments

Carbon dating fossils evolution - dating men smoke cigars

It was all clear when in 1859 Charles Darwin published his "On the Origin of Species".

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So it was apparent that there was some kind of 'progress' going on.

Any attempt to make a claim about evolution always comes back at some point to the geologic time scale.

But if you are going to be looking at time scales that are that old how do you get the dates?

The answer is that you use radioactive carbon dating to get the dates. But other methods have also been used to date the fossil record.

The Fossils Sequence Record It was the study of rock layers in England near the beginning of the 19th century that lead to the study of paleontology and from there to the study of fossils.

They are drawn up mathematically, using lists of morphological (external form) or molecular (gene sequence) characters.

What is noteworthy is that modern phylogenetic trees derive no input from stratigraphy, scientific comparisons between tree shape and stratigraphy can be used to confirm the fossil record.

One records which fossil is younger and which is older.

The discovery of a different means, one for which absolute dating is possible occurred in the early 20th century. Certain naturally occurring elements are radioactive, and they break down or decay at well-known predictable rates.

The scheme worked all round the world, without fail.

The next observation occurred when geologists noted how fossils became more complex through time.

And this gave us the familiar list of divisions in the geologic time scale -- Jurassic, Cretaceous, Tertiary, and so on.

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