'Younger rock layers' diaporamas de présentation

Chapter 15: Evolution

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Evolution

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Chapter 13:1 Fossils

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Law of SuperPosition

Geologic Time. Law of SuperPosition. Super what??!?!. Superposition: Younger rock layers are on top of older rock layers. Used with the other principles of stratigraphy to study rock layers and layering.

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Relative Dating

Relative Dating. DO NOW MONDAY. What is an index fossil? What is it used for?. Learning Targets-MONDAY. Explain relative dating using index fossils. Identify the sequence of rock layers using the Law of Superposition. Law of Superposition.

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Determining Absolute Age

Determining Absolute Age. Chapter 8.2. Absolute Dating Methods. Rates of Erosion Scientists can estimate age based on a rate of erosion Practical only for geologic features that formed 10,000 to 20,000 years ago. Ex. Niagara Falls (eroding at a rate of about 1.3 m per year).

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