Thread:TheSquidychicken/@comment-31308946-20170525193032/@comment-26335978-20170609134132

I don't know very much about evolution, but I do know there are several ways besides Carbon-14 decay that scientists use to guess the age of the earth.

A simple example:

The earth's crust is made out of rock layers. Some layers can form within days (such as in volcanic eruptions), and other take many years of extreme pressure and/or heat to form. There are 3 miles of these layers in most of the continental crusts, and less in the ocean, depending on depth. Scientists can count the layers and calculate roughly how long it took for that rock to form.