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Correlation with them has helped geologists date many New Zealand rocks, including those containing dinosaurs.Bring relative dating principles to life with the activity Rock layers and relative dating.

For example, microscopic dinoflagellates have been studied and dated in great detail around the world.

Throughout the history of life, different organisms have appeared, flourished and become extinct.

Many of these organisms have left their remains as fossils in sedimentary rocks.

Students begin by observing a photograph and a diagram of rock layers near Whanganui, watch an animation about how the layers were formed, then use an interactive labelling diagram to work out the order in which the rocks were created.

The activity offers literacy opportunities as well as practice using the science capability 'Interpret representations'.

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