Rocks

Sedimentary Rocks
Diatomite Rock Type, Composition, Formation, Occurrence
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Tammy
Diatomite is a chalk-like, friable, soft, earthy, and fine-grained siliceous sedimentary rock. The rock is also called diatomaceous earth. It ...

Sedimentary Rocks
Oil Shale Rock Type, Composition, Classification, Occurrence
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Tammy
Oil shale is a fine-grained, organic-rich sedimentary rock that produces oil and combustible gas upon destructive distillation. The rock primarily ...

Sedimentary Rocks
Coquina Rock Types, Composition, Formation, Occurrence
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Tammy
Coquina is a sedimentary rock mainly made up of sand-size fossil fuels. The rock is composed of either wholly or ...

Sedimentary Rocks
Breccia Rock Type, Composition, Formation, Types & Uses
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Tammy
Breccia is a group name for a set of clastic sedimentary rocks made of large angular fragments. The angular fragments ...

Sedimentary Rocks
Caliche Rock Type, Appearance, Formation, Occurrence & Uses
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Tammy
University of Kansas defines caliche as a broad term that defines sediment (sand, silt, gravel, and clay) or soil cemented ...