Fundamental Geologic Principles

ranger program with fault model
Ranger program on the Teton fault. Grand Teton National Park, Wyoming.

Geologic Principles

In relative age dating, geologists use these principles to place sequences of rock in chronological order. Click on photos or article titles below to learn more:

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    • Lateral Continuity: Layers of sediment begin as continuous beds spreading out in all directions.



    Last updated: March 20, 2019


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