Relative age dating geologic cross sections

12-Sep-2019 18:13 by 2 Comments

Relative age dating geologic cross sections - Chat webcam america

Make sure to include when erosion and deformation occurred.When you are finished check your work with the answers provided.

This was followed by deposition of Loren Shale and finally the Jackson Sandstone.Based upon such compound cross-cutting relationships it can be seen that the fault is older than the unconformity which in turn is older than the dike.Using such rationale, the sequence of geological events can be better understood.First is the Law of Superposition - which states that in a section of horizontal strata, the top layer is the youngest and the underlying layers are increasingly older with depth.The second is the Law of Cross-cutting - meaning anything cutting across another feature is younger than the feature it cuts.Below are two cross sections for use practicing the application of the principles of relative age dating.

For each cross section list the order of events that occurred to form the rocks illustrated.Cross-cutting relationships may be compound in nature.For example, if a fault were truncated by an unconformity, and that unconformity cut by a dike.As a member, you'll also get unlimited access to over 55,000 lessons in math, English, science, history, and more.Plus, get practice tests, quizzes, and personalized coaching to help you succeed.Free 5-day trial Discover how geologists study the layers in sedimentary rock to establish relative age.

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