More on Sedimentary Rocks
Deeper and more specialized resources.
About Sedimentary Rocks
An introduction to the second great class of rock types.
An introduction to the second great class of rock types.
Sedimentary Rock Types
The major types of sedimentary rocks.
The major types of sedimentary rocks.
Sedimentary Rock Picture Gallery
Sedimentary rocks arranged in order of grain size from small (chert) to large (breccia).
Sedimentary rocks arranged in order of grain size from small (chert) to large (breccia).
Sedimentary Rock Classification Diagrams
Ternary diagrams to help classify sedimentary rocks.
Ternary diagrams to help classify sedimentary rocks.
Wentworth Grain Size Scale
An essential tool in studying sedimentary rocks.
An essential tool in studying sedimentary rocks.
Concretions Picture Gallery
See a worldwide range of these sedimentary rock structures.
See a worldwide range of these sedimentary rock structures.
Coquina Picture Gallery
Photos of coquina, limestone composed of shelly fragments.
Photos of coquina, limestone composed of shelly fragments.
Limestone Picture Gallery
Examples of limestone and its features.
Examples of limestone and its features.
Rock Salt and Its Geology
An introduction to the geology of salt.
An introduction to the geology of salt.
Sandstone and Its Geology
Sandstone is sand cemented together into rock.
Sandstone is sand cemented together into rock.
The Agate Page
Agate is both the state rock and the state gem of Nebraska, which may explain why the University of Nebraska hosts this home page for its deep content. The photo gallery is amazing.
Agate is both the state rock and the state gem of Nebraska, which may explain why the University of Nebraska hosts this home page for its deep content. The photo gallery is amazing.
Clastic Depositional Environments
That means, where sediments form and what kind of rocks they turn into. It's all linked to a clearly labeled diagram and explanation at the University of British Columbia.
That means, where sediments form and what kind of rocks they turn into. It's all linked to a clearly labeled diagram and explanation at the University of British Columbia.
Concretions Geodes and Thunder Eggs
An Australian site introduces these ugly lumps with gorgeous interiors. Includes good Australian collecting localities, in case you're there.
An Australian site introduces these ugly lumps with gorgeous interiors. Includes good Australian collecting localities, in case you're there.
"Geodes—Small Treasure Vaults in Illinois"
This "geobits" online pamphlet by the Illinois State Geological Survey is an authoritative and thorough look at these rock-show commonplaces.
This "geobits" online pamphlet by the Illinois State Geological Survey is an authoritative and thorough look at these rock-show commonplaces.
Petrographic Atlas of Coal and Related Rocks
From Southern Illinois University comes this gallery of coals and the stuff in them, under the microscope.
From Southern Illinois University comes this gallery of coals and the stuff in them, under the microscope.
Sedimentary Rocks
Lynn Fichter of James Madison University will lead you as deep as you want into the subject.
Lynn Fichter of James Madison University will lead you as deep as you want into the subject.
Further
Karl-Peter Kelber's Links for Mineralogists site has a big grab-bag of rock-related sites for all levels of users.
Karl-Peter Kelber's Links for Mineralogists site has a big grab-bag of rock-related sites for all levels of users.