Windblown silt is a type of sedimentary material composed of fine particles that have been transported by wind. It is also known as loess, which is a German word meaning 'LOOSE' or 'LOFTY'. Loess is typically found in areas with strong winds and is composed of silt-sized particles of quartz, feldspar, and other minerals. Windblown silt is an important component of soil and is used in agriculture to improve soil fertility.