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Posted by / 30-Mar-2016 09:04

Relative and absolute dating activities

Read the pages listed below, which are available online through Library Reserves.

Electronic course reserves, or "e-Reserves," are articles and book chapters that are available online through the University Libraries.

Once they are able to manipulate the cards into the correct sequence, they are asked to do a similar sequencing activity using fossil pictures printed on "rock layer" cards.

Sequencing the rock layers will show students how paleontologists use fossils to give relative dates to rock strata.

This is different to relative dating, which only puts geological events in time Most absolute dates for rocks are obtained with radiometric methods.

Relative age dating also means paying attention to crosscutting relationships.

Say for example that a volcanic dike, or a fault, cuts across several sedimentary layers, or maybe through another volcanic rock type.

However, "relative" dating or time can be an easy concept for students to learn.

In this activity, students begin a sequencing activity with familiar items — letters written on cards.

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