This method uses the orientation of the Earth's magnetic field, which has changed through time, to determine ages for fossils and rocks. Relative dating to determine the age of rocks and fossils ...

By measuring the ratio of lead to uranium in a rock sample, its age can be determined. Using this technique, called radiometric dating, scientists are able to "see" back in time.

The Role of Stratigraphy in Dating Fossils Stratigraphy involves studying rock layers (strata) to determine the relative ages of fossils. The principle of superposition indicates that lower layers ...

This method uses the orientation of the Earth's magnetic field, which has changed through time, to determine ages for fossils and rocks. Relative dating to determine the age of rocks and fossils ...