Soils Worksheet - Effingham County School District

Size classes range from pebbles (or gravel, 2 mm to 75 mm), cobbles (75 mm to 250 mm), stones (250 mm to 600 mm), and finally boulders (≥600 mm). Coarse fragments can affect water movement in the soil, or prevent root penetration, and they also occupy volume in the soil that could have been occupied by soil-sized particles. ................
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