Figure 3-2. Fragipan Cross-section
A horizontal view (looking down) of a fragipan from a soil (a Fragiudalf) in Tennessee. The horizon has prismatic structure with gray seams between prisms and reddish redoximorphic features, mostly within the prisms. This view allows the structure and color patterns of the horizon to be easily observed. The exposed area is approximately 30 by 40 cm.
A horizontal view of each horizon is useful. This exposes structural units that otherwise may not be readily observable from the vertical pit face. Patterns of color within structural units, variations of particle size from the outside to the inside of structural units, and the pattern in which roots penetrate structural units are commonly seen more clearly in a horizontal section.
Soil Survey Manual, Ag. Handbook 18, 2017, (p. 90).
Figure 3-2. Fragipan Cross-section
A horizontal view (looking down) of a fragipan from a soil (a Fragiudalf) in Tennessee. The horizon has prismatic structure with gray seams between prisms and reddish redoximorphic features, mostly within the prisms. This view allows the structure and color patterns of the horizon to be easily observed. The exposed area is approximately 30 by 40 cm.
A horizontal view of each horizon is useful. This exposes structural units that otherwise may not be readily observable from the vertical pit face. Patterns of color within structural units, variations of particle size from the outside to the inside of structural units, and the pattern in which roots penetrate structural units are commonly seen more clearly in a horizontal section.
Soil Survey Manual, Ag. Handbook 18, 2017, (p. 90).