Absolute dating of fossils

Continue Reading Relative dating observes the placement of fossils and rock in layers known as strata.

For a fossil to be a good index fossil, it needs to have lived during one specific time period, be easy to identify and have been abundant and found in many places. If you find ammonites in a rock in the South Island and also in a rock in the North Island, you can say that both rocks are Mesozoic.

Relative dating does not provide actual numerical dates for the rocks.

Fossils are important for working out the relative ages of sedimentary rocks.

Scientists measure the proportion of carbon-14 left in the organism to determine its age.

The first method of finding the absolute age of an object is by examining tree rings.

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BECAUSE THEY ARE UNSTABLE THEY GIVE OFF RADIATION TO TRY TO BECOME NORMAL.

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