Most people think that scientists can actually measure the ages of rocks, using a method called “radiometric” or “radioisotope” dating.
More often, rocks are “dated” by the fossils they contain, based on a pre-existing belief in evolution.
Of course, the best method is to check the account of a reliable eyewitness, if one is available. Since it is the written Word of God, we can trust it to tell us the truth about the past.
Carefully studying the Biblical record, we find that the universe has an age of around 6,000 years, and that a world-changing, global Flood occurred about 4,300 years ago.
When they find one, they gather a sample of the hardened lava and send it off to a laboratory to test it for radioactive elements.
It measures the amounts of certain radioactive substances.
After all, the scientists haven’t been around that long, have they?
There are a variety of different ways to figure out how old an object is.
So if scientists wanted to measure the age of a fossil using this method, they would look for a nearby layer of igneous rock (e.g.
rock that forms from lava from a volcanic eruption)—perhaps in the rock layers above where the fossil was found, or in the layers below.
Even many archaeologists don’t think “carbon dating” is completely accurate all the time.