Education

Coal

Pictures of Sedimentary Rocks

Coal is fossilized peat, dead plant material that once piled deep on the bottom of ancient swamps. Learn more about coal in Coal in a Nutshell and Coal Geology.

For more photos see the Sedimentary Rocks Gallery.

Other galleries:
Fossils
Geologic Features and Processes
Glaciers and Ice
Landforms
Minerals
Rocks
Geology and Society

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Gallery Index: Sedimentary Rock Types

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Reader Submissions: My Sedimentary Rock

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Sedimentary Rock Basics

About Sedimentary Rocks Sedimentary Rock Classification Diagrams Sedimentary Rock Gallery

Details of Sedimentary Rocks

About Sandstone Minerals of the Earth's Surface Sedimentary Structures

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Andrew Alden
Geology Guide

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