What is Relative Dating? - Law of Superposition, Principles of Original Horizontality & Cross-Cutting Relationships


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question 1 of 3

If Sedimentary Layer A occurs above Sedimentary Layer C and Sedimentary Layer B is below Sedimentary Layer C, which of the following is the correct order of the layers (from oldest to youngest)?

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1. The Principle of Original Horizontality applies only to _____ rocks.

2. Any fault lines or igneous intrusions that cut across a set of rock strata must be _____ that set of rock.

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About This Quiz & Worksheet

Use this quiz and worksheet to assess your understanding of the techniques geologists use to establish relative dating and the relationships that occurred over geologic time periods.

Quiz & Worksheet Goals

These assessments will test you on the following:

  • Law of Superposition
  • Principle of Original Horizontality
  • Age determination of ingenious intrusions/fault lines cutting across rock strata

Skills Practiced

Students will practice the following skills:

  • Knowledge Application - use your knowledge to answer questions about the age of inclusions found within sedimentary rock
  • Interpreting Information - verify that you can read information regarding determining the age of rocks and interpret it accurately
  • Information Recall - access the knowledge you've gained regarding what the interface between discontinuous layers of rock is called

Additional Learning

Learn more about relative dating by reviewing the lesson, What is Relative Dating? - Law of Superposition, Principles of Original Horizontality & Cross-Cutting Relationships. Objectives covered include:

  • Review Stratigraphic Succession
  • Understand the Law of Superposition and other related laws
  • Define inclusions