'Oldest rock layer' presentation slideshows

Determining geological ages

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Fossils and The Law of Superposition

420 views • 22 slides

Chapter 21

Chapter 21. Fossils and the Rock Record. Geologic History Principles. Law of Uniform Processes Law of Superposition Law of Cross-cutting Relationships Law of Included Fragments. Law of. Uniform Processes.

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Quick Write:

10/13/08 Rock Layer Formation Lesson #27. Quick Write: Geologists have devised methods to estimate the ages of rocks in the Grand Canyon. Geologists have determined: The Earth is probably 4.5 billion years old. Kaibab Limestone is about 250 million years old.

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Fossils and The Law of Superposition

973 views • 9 slides

Fossils and The Law of Superposition

359 views • 9 slides

Classifying Rocks

Classifying Rocks. Geologists observe: Mineral composition Color Texture a. Grain size b. Grain shape c. Grain pattern. Igneous Rocks. Classified according to their origin, texture, and mineral composition. ORIGIN:

367 views • 9 slides

Fossils and The Law of Superposition

Fossils and The Law of Superposition. Fossils and Superposition. What is a fossil? The trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock What is a superposition? Younger rocks lie above older rocks if the layers have not been disturbed.

224 views • 9 slides

Fossils and The Law of Superposition

223 views • 9 slides