Dating geologic time

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In Relative Time dating a specific age in years is not given.

This type of dating puts events in their correct chronological order based upon the sedimentary layer in which an object is found.

For example, how do they know when the dinosaurs lived or what time period the mummy they just found was from?Where do scientists begin the story of Earths history?One place to start is by looking at the age of the materials that make up the Earth itself.You will get to understand more about things like: The geologic time scale is an essential tool for understanding the history of Earth and the evolution of life.In this lesson, explore the principal eons, eras, periods, and epochs that help us track major events in geologic history.

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