1. Sandstone: Formed from cemented sand grains, often containing quartz, feldspar, and other minerals.

2. Limestone: Primarily composed of calcium carbonate, often formed from the shells of marine organisms.

3. Shale: A fine-grained rock composed of clay and silt particles, often layered and easily split.

4. Conglomerate: A coarse-grained rock containing rounded fragments of other rocks, held together by a cementing material.