Relative dating lab lesson plans

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Stegosaurus and Triceratops were not part of the same assemblage because they lived at different times.Obviously, the fossil assemblages change from period to period.Based on this information, they will learn how to relatively date associated artifacts.They will interpret their archaeological site by writing an explanation of when each stratum and artifact was deposited in their site.One outcrop shows layers from one geologic time period, while the other outcrop represents a different time. Can he put the pieces together to make the story more complete? Let's find out how scientists deal with this common problem by using the fossils inside the rocks.Back in 1793, there lived a land surveyor named William Smith.

I know that doesn't seem like a very short time span, but it is when we're talking about geologic time.You may already know how to date a fossil with a rock.But did you know that we can also date a rock with a fossil?Fossil succession is based on the observation that certain assemblages, or groups, of animals and plants have lived during certain time periods over geologic history.For example, human beings and modern elephants are part of the same assemblage because we live in the same time period.

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