Sedimentary Rock

Sedimentary rocks are composed of small bits of rocks (mud, sand, gravel), and sometimes plants and/or animals, that have become 'cemented' together in layers over time.

Composed of bonded grains of eroded rocks. Many break in plate-like fragments.

* Shale
* Sandstone
* Limestone
* Conglomerate
* Breccia
* Coal

## Sources[edit]

* Kavanaugh, James. Pocket Naturalist - Geology - An Introduction to familiar Rocks, Minerals, Gemstones & Fossils, Waterford Press: Arizona (2000)