Figure 1. The texture triangle, sometimes referred to as the tertiary soil diagram. Notice that if you plot a soil with the following percent values -- sand 50%, silt 22%, and clay 28% -- the point of intersection of the three lines lands in the sandy clay loam area of the chart. Also notice that any soil with over 50% clay will almost invariably be referred to simply as a clay soil.

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Last updated on October 6, 2005

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