Describe absolute datingnumerical age
Imagine braving the desert heat for days or even weeks as you dig for dinosaur bones.You find something extraordinary and want to know as much about it as you can.Along the way, we'll learn how stratigraphic succession and radioactive decay contribute to the work of paleontologists.Consider the following scenario: Paul the Paleontologist is a very famous scientist who has studied dinosaur bones all over the world.But really, how do scientists figure out how old their dinosaur bones are?And, what about other findings like fossil fish, plants and insects?Absolute dating provides a numerical age or range in contrast with relative dating which places events in order without any measure of the age between events.In archaeology, absolute dating is usually based on the physical, chemical, and life properties of the materials of artifacts, buildings, or other items that have been modified by humans and by historical associations with materials with known dates (coins and written history).
Scientists who study the ancient Earth have been working for hundreds of years to build an accurate timeline of the formation of the planet and the evolution of all life. In order to build and improve this timeline, scientists must have several types of accurate methods they can use to determine the ages of materials.
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 date, or date range, in number of years.
As a member, you'll also get unlimited access to over 55,000 lessons in math, English, science, history, and more.
Plus, get practice tests, quizzes, and personalized coaching to help you succeed.
Free 5-day trial Learn how scientists determine the ages of rocks and fossils.