Types of sedimentary rocks?

1. Sandstone
2. Shale
3. Limestone
4. Conglomerate
5. Siltstone
6. Dolomite
7. Chert
8. Evaporites (such as rock salt and gypsum)
9. Coal
10. Diatomite

Clastic Sedimentary Rocks

- Conglomerate: Composed of large, rounded rock fragments (gravel) cemented together.
- Breccia: Similar to conglomerate, but composed of angular rock fragments.
- Sandstone: Formed from cemented sand grains.
- Mudstone: Formed from compacted fine-grained mud or clay.
- Siltstone: Intermediate in grain size between sandstone and mudstone.

Chemical Sedimentary Rocks

- Limestone: Composed primarily of calcium carbonate (calcite).
- Dolomite: Composed primarily of calcium magnesium carbonate (dolomite).
- Chalk: A soft, white limestone composed of microscopic calcite crystals.
- Gypsum: Formed from precipitated calcium sulfate.
- Halite (rock salt): Formed from evaporated seawater.

Biochemical Sedimentary Rocks

- Coal: Formed from the accumulation and compaction of plant materials.
- Lignite: A low-grade coal with high moisture content.
- Anthracite: A high-grade coal with low moisture content.
- Chert: A hard, fine-grained rock composed of silica (silicon dioxide).
- Flint: A dark-colored variety of chert.

Other Types

- Evaporite: Formed from the precipitation of minerals from evaporated water bodies.
- Iron formation: A banded rock composed of iron oxides and silica.
- Banded iron formation: A type of iron formation with alternating bands of iron oxides and silica.
- Volcaniclastic sedimentary rocks: Formed from the accumulation and compaction of volcanic ash and other volcanic particles.