Relative age dating practice

Learn how inclusions and unconformities can tell us stories about the geologic past.We'll even visit the Grand Canyon to solve the mystery of the Great Unconformity!

relative age dating practice-44relative age dating practice-7

One could easily see the relative age dating come into use in practice.

If a paleontologist were to find a dinosaur fossil in a layer of strata in between two strata with ages that were known, then we could be able to infer that the dinosaur lived in between the two ages of the layers of strata.

Now imagine that you come upon a formation like this: What do you think of it? How can you make any conclusions about rock layers that make such a crazy arrangement?

Geologists establish the age of rocks in two ways: numerical dating and relative dating.

Imagine that you're a geologist, studying the amazing rock formations of the Grand Canyon.

Your goal is to study the smooth, parallel layers of rock to learn how the land built up over geologic time.

Fossils tend to be found in sedimentary rock because metamorphic rock and igneous rock tend to destroy the fossils, due to high pressure and heat that the rocks undergo in formation.

Sedimentary rocks tend to be formed in layers with each being from a different time period.

You will be tested on the terms associated with these methods and asked to solve problems involving the relative age of rock layers in rock formations.

In this assessment you'll be tested on: To learn more about determining the age of rock layers using relative aging, review the accompanying lesson on What is Relative Age?

This is obviously imperfect in the sense that a more precise answer cannot always be derived, but it at least places the fossil in a small time frame that it could have roamed the earth.

Tags: , ,