The term SOIL TYPE can refer to two different types of soil, LOAM and MARL. LOAM is a type of soil composed of clay, sand, silt, and organic matter. It is known for its ability to retain moisture and nutrients, making it ideal for growing plants. MARL is a type of soil composed of calcium carbonate and clay. It is often used in agricultural applications as it helps to improve soil structure and fertility. Both LOAM and MARL are important components of healthy soil and are essential for successful crop production.