• Steno’s principles are essential for determining the relative ages of rocks and rock layers.
  • In relative dating, scientists do not determine the exact age of a fossil or rock.
  • They look at a sequence of rocks to try to decipher when an event occurred relative to the other events represented in that sequence.
  • The history of a section of rocks can be deciphered using the principles outlined in this concept.Use the resource below to answer the questions that follow.
  • For relative ages, you know #1 but not #2.
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