Relative dating proving an old earth

Posted by / 08-Nov-2019 05:05

Relative dating proving an old earth

If an impact event was large enough, its effects were global in reach.

For example, the Imbrium impact basin on the Moon spread ejecta all over the place.

In the time since the previous geologic time scale was published in 2004, most of the boundaries between Earth's various geologic ages have shifted by a million years or so, and one of them (the Carnian-Norian boundary within the late Triassic epoch) has shifted by 12 million years.

Just like a stack of sedimentary rocks, time is recorded in horizontal layers, with the oldest layer on the bottom, superposed by ever-younger layers, until you get to the most recent stuff on the tippy top.

On Earth, we have a very powerful method of relative age dating: fossil assemblages.

Paleontologists have examined layered sequences of fossil-bearing rocks all over the world, and noted where in those sequences certain fossils appear and disappear.

When you find the same fossils in rocks far away, you know that the sediments those rocks must have been laid down at the same time.

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Venus, Io, Europa, Titan, and Triton have a similar problem.