What is the classification for soil particles larger than 2mm?

Soil particles that are larger than 2mm are classified as rock fragments or gravel. In the context of soil classification, these larger particles do not fit the definitions for clay, silt, or sand, which are all defined by their smaller particle sizes: clay is less than 0.002mm, silt is between 0.002mm and 0.05mm, and sand is between 0.05mm and 2mm. Since particles larger than 2mm exceed the size threshold for these classifications, they fall into the broader category of rock. This classification is important in soil science because the presence of larger particles can influence soil properties such as drainage, compaction, and the overall ecosystem.