At the coast of Kenya, some examples of dominant rocks include:
- Sandstone: Sandstone is a sedimentary rock composed mainly of sand-sized grains of mineral, rock, or organic material. Along the Kenyan coast, sandstone is commonly found in areas such as the Shimoni and Malindi regions. It forms cliffs, headlands, and sandy beaches.
- Limestone: Limestone is another common rock found along the Kenyan coast. It is a sedimentary rock primarily composed of calcium carbonate. Limestone formations can be seen in areas like the Shimoni Caves and the Kisite-Mpunguti Marine National Park. Limestone contributes to the formation of coral reefs and provides habitats for diverse marine life.
- Coral Rock: Along the coast, coral rock or coral limestone is abundant. It is formed by the accumulation of coral skeletons, shells, and other organic debris. Coral rock formations are prevalent in coastal areas such as Watamu, Mombasa, and Lamu. They contribute to the unique coastal landscapes and are often used as building materials in traditional Swahili architecture.
- Conglomerate: Conglomerate is a sedimentary rock composed of rounded gravel-sized clasts, usually cemented together. In some parts of the Kenyan coast, conglomerate deposits can be found. These rocks are a result of ancient river systems and provide insights into past geological processes and landscapes.
It’s worth noting that the geological composition of the coast of Kenya is diverse, and there may be variations in rock types depending on specific locations and geological formations. The examples mentioned above represent some of the dominant rocks observed along the coast.