Principles of relative dating in geology

By carefully digging, we have found that each trash pit shows a sequence of layers.

Although the types of trash in each pit is quite variable, each layer has a distinctive kind of trash that distinguishes it from other layers in the pits.

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without knowing the absolute ages at which the rocks themselves formed.Principles of Stratigraphy Stratigraphy is the study of strata (sedimentary layers) in the Earth's crust.Geologist in the 1800s worked out 7 basic principles of stratigraphy that allowed them, and now us, to work out the relative ages of rocks.Click Question 1 (3 points): Find the list of hypothetical geologic examples and click on "fault." We are asked to determine the correct sequence of geologic events shown by the cross-section.In order to do this, we need to apply the principles of relative dating which we have learned.Unlike people, you can’t really guess the age of a rock from looking at it.

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