UIS Commission on Karst Hydrogeology and Speleogenesis
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Glossary of Karst and Cave Terms

clayey sand
1. An unconsolidated sediment containing 50-90% sand and having a ratio of silt or clay less than 1:2. 2. An unconsolidated sand containing 40-75% sand, 12.5-50% clay, and 0-20% silt.