Two approaches to dating

“How old is it?” is one of the first questions you’ll probably ask when you see an interesting rock or fossil. It’s certainly one of the...

Scientists have a variety of methods to use when they try to date a rock or a rock layer. Scientists choose the method that best suits...

Geologists often need to know the age of material that they find. They use absolute dating methods, sometimes called numerical dating, to give rocks an actual...

“How old is it?” is one of the first questions you’ll probably ask when you see an interesting rock or fossil. It’s certainly one of the...