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5 LAMAR AND DELTA COUNTIES, TEXAS This map unit consists of prairie soils that have a The soils in this unit have high potential for pasture loamy surface layer and a clayey subsoil. Slopes are 0 to and hay. They have medium potehtial for crops and 5 percent (fig. 3). This unit makes up about 22 percent of range. They have very slow permeability, erode easily, the survey areas. It is' about 30 percent Wilson soils, 26 and are droughty. Potential for woodland is Iow because percent Normangee soils, 22 percent Crockett soils, and of very slow permeability. There is no woodland grazing 22 percent other soils, in this unit, Soils in this unit are used mainly for range or' · Wilson soils are nearly level to gently sloping and are for pasture and hay. on ridgetops and foot slopes. These soils are somewhat The soils in this unit have medium potential for most poorly drained. The surface layer is very dark gray, urban uses, Limiting factors are low strength and the slightly acid silt loam about 6 inches thick. Between shrinking and swelling with changes in moisture content. depths of 6 and 9 inches, the soil is very 'dark gray, The potential for recreation is medium because of the medium acid clay loam, Between depths of 9 and 28 very slow permeability. inches, the soil is very dark gray, slightly acid clay, Be- tween depths of 28 and 39 inches, the soil is dark gray, 4. Trlnlty-Kaufman neutral clay. Between depths of 39 and 80 inches, the Nearly level, very slowly permeable, clayey so#s on flood soil is grayish brown, mildly alkaline clay that has light plains olive brown and olive yellow mottles. This map unit consists of clayey soils that crack when Normangee soils are gently sloping and are on tops dry. Slopes are 0 to 1 percent. This unit makes up about and sides of ridges. These soils are moderately well 10 percent of the survey area. It is about 59 percent drained. The surface layer is dark brown, slightly acid Trinity soils, 33 percent Kaufman soils, and 8 percent clay loam about 7 inches thick. Between depths of 7 and other soils. 16 inches, the soil is brown, medium acid clay that has Trinity soils ~re somewhat poorly drained. The surface red, reddish brown, and dark grayish brown mottles. Be- layer is very dark gray, moderately alkaline clay about 29 tween depths of 16 and 28 inches, the soil is yellowish inches thick. Between depths of 29 and 72 inches, the brown, neutral clay that has mottles in shades of red and soil is black, moderately alkaline clay. brown. Between depths of 28 and 38 inches, the soil is Kaufman soils are somewhat poorly drained. The sur- mottled grayish brown and light olive brown, mildly alka- face layer is black, slightly acid clay about 35 inches line clay. Between depths of 38 and 48 inches, the soil is thick. Between depths of 35 and 80 inches, the soil j~ light olive brown, moderately alkaline clay that has gray- . very dark gray, slightly acid clay that has olive brown and' ish brown mottles. Between depths of 48 and 57 inches, dark yellowish brown mottles. the soil is mottled olive, light olive brown, and yellowish Other soils are Varro and Elbon soils. These soils are · brown, moderately alkaline clay. The underlying material frequently flooded, loamy soils on bottom lands. is light olive gray, moderately alkaline weathered shale to Soils in this unit have high potential for pasture and a depth of 65 inches. It has light olive brown mottles, hay, woodland, and woodland grazing. Potential for Crockett soils are gently sloping and are on tops and crops is medium because of flooding. There is no range sides of ridges. These soils are moderately well drained, in this unit. ~' · The surface is very dark grayish brown, slightly acid loam The potential for urban uses and recreation is Iow about 8 inches thick. Between depths of 8 and 17 because of flooding, the clayey surface layer, and wet- inches, the soil is mottled brown and reddish brown, ness. slightly acid clay. Between depths of 17 and 29 inches, the soil is mottled light olive brown and olive, slightly 5. Whakana-Porum . acid clay. Between depths of 29 and 39 inches, the soil is~olive, neutral clay that has strong brown and yellowish Gently sloping to moderately steep, moderately parma- red mottles. Between depths of 39 and 51 inches, the able to very slowly permeable, loamy soils on uplands soil is olive brown, mildly alkaline clay. Between depths This map unit consists of forested soils that have a · Of 51 and 59 inches, the soil is light olive brdwn, moder- loamy surface layer and a loamy and clayey subsoil. ately alkaline clay loam that has grayish brown and light Slopes are I to 20 percent (fig. 4). This unit' makes up olive brown mottles. Between depths of 59 and 73 about 9 percent of the survey area. It is about 38 per- inches, the soil is mot[led light gray and brownish yellow, cent Whakana soils, 15 percent p0rUm soils, and 47 moderately alkaline loam. percent other soils. Other soils are Parisian, Mabank, Lassiter, and Roxton Whakana soils are gently sloping to moderately steep soils. Parisian and Mabank soils ha~;e a loamy surface and are on tops and sides of' ridges of high terraces of layer and a clayey subsoil. They are gently sloping and major streams. These soils are well drained and moder- nearly level and are on uplands. The loamy Lassiter and ately permeable. The surface layer is brown, medium ~layey Roxton soils are frequently flooded and are on acid fine sandy loam about 15 inches thick. Between ottom lands, depths of 15 and 25 inches, the soil is red, very strongly