Mergel is a term that refers to a type of sedimentary rock composed primarily of calcium carbonate and clay. It often forms in marine environments and can be found in various geological formations. Mergel is typically characterized by its soft texture and can be easily weathered, making it an important material in soil formation and agriculture. In addition to its geological significance, mergel is also used in construction and landscaping. It can serve as a natural fertilizer due to its calcium content, benefiting plant growth. The study of mergel contributes to our understanding of geology and soil science, highlighting its role in the Earth's ecosystem.