# Question: How do you calculate relative dating?

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## How do you measure relative dating?

Relative age is the age of a rock layer (or the fossils it contains) compared to other layers. It can be determined by looking at the position of rock layers. Absolute age is the numeric age of a layer of rocks or fossils. Absolute age can be determined by using radiometric dating.

## What is relative dating give an example?

For example, if a valley is formed inside an impact crater, the valley must be younger than the crater. Craters are very useful in relative dating; as a general rule, the younger a planetary surface is, the fewer craters it has.

## How do you do relative rock dating?

0:1826:37Relative Dating of Rock Layers - YouTubeYouTubeStart of suggested clipEnd of suggested clipNow this would be figuring out simply which rock or fossil or geologic event came first which oneMoreNow this would be figuring out simply which rock or fossil or geologic event came first which one came second third etc.

## How did you determine the relative age of rock A?

The relative age of a rock is its age in comparison with other rocks. The intrusion (D) cuts through the three sedimentary rock layers, so it must be younger than those layers. The principle of superposition states that the oldest sedimentary rock units are at the bottom, and the youngest are at the top.