'Oldest rock layer' presentation slideshows

Determining geological ages

827 views • 67 slides

Fossils and The Law of Superposition

412 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.

364 views • 18 slides

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.

215 views • 11 slides

Fossils and The Law of Superposition

946 views • 9 slides

Fossils and The Law of Superposition

349 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:

341 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.

213 views • 9 slides

Fossils and The Law of Superposition

210 views • 9 slides