Sedimentary+Rocks

Sedimentary Rocks are formed when sediments are deposited and are cemented and compacted.

__**Clastic**:__ These rocks have definite grain size.

__**Crystalline:**__ These rocks look like they have crystals in them.

__**Bioclastic:**__ These rocks are formed from organic material.


 * The Sedimentary Rock page from the Earth Science Reference Tables:** 