Laserfiche WebLink
74 <br />Thedalund series <br />SOIL SURVEY <br />The Thedalund series consists of moderately deep, well <br />drained soils that formed in residuum from soft: calcare- <br />ous shale. Thedalund soils are on plains. Slopes are 1 to 9 <br />percent. <br />Thedalund soils are similar to Kim, Nelson, Otero, Shin- <br />gle, and Tassel soils and are near the Olney and Terry <br />soils. Kim, Otero, and Olney soils are deep. Nelson and <br />Tassel soils are less than 18 percent clay in the. C horizon. <br />Terry soils have a B2t horizon that is less than 18 percent <br />clay. Shingle soils have shale between 10 and 20 inches. <br />Typical pedon of Thedalund loam, 3 to 9 percent slopes, <br />2,050 feet north and 1,800 feet east of southwest, corner <br />sec. 29, T. 7 N., R- 65 W. <br />Ap-0 to 8 inches- brown (10YR 5/3) loarn, dark brown (IOYR 4/3) <br />moist; moderate fine granular structure; slightly hard, friable; 5 <br />percent, shale chips; calcareous; moderately alkaline; abrupt smooth <br />boundary. <br />C,lea-8 to 12 inches; pale brown (10YR 6/3) loam, brown (IOYR 5/3) <br />moist; weak fine granular st.nrcture.; slightly hard, friable; some <br />visible lime in medium soft masses; calcareous; moderately alkaline; <br />clear smooth boundary. <br />C2ca-12 to 25 inches; very pale brown (IOYR 7/4) loam stratified with <br />thin lenses of shale, light yellowish brown (10YR 6/4) moist; mas- <br />sive; slightly hard, friable; some visible lime occuring in medium <br />soft masses; calcareous; moderately alkaline- abrupt smooth bounda- <br />ry <br />Cdr-25 inches; soft calcareous shah:. <br />Typically these soils have free carbonates at the surface. Depth to <br />shale ranges from 20 to 40 inches- Content of rock fragments ranges <br />from 0 to 15 percent. <br />The A horizon has hue of 10YR or 2.5Y, value of 5 or 6 dry and 4 or 5 <br />moist, and chroma of 2 or 3. The C horizon has hue of IOYR or 2.5Y. It <br />is loam or clay loam that is 18 to 35 percent clay. <br />Ulm series <br />The Ulm series consists of deep, well drained soils that <br />formed in calcareous alluvial and eolian sediments from <br />shale. Ulm soils are on plains. Slopes are 0 to 5 percent.. <br />Ulm soils are similar to the Fort Collins, Renohill, and <br />Wiley soils and are near the Heldt and Nunn soils. Fort <br />Collins and Wiley soils are less than 35 percent clay in <br />the R2t horizon. Renohill soils have shale between 20 and <br />40 inches- Heldt soils lack a 132t horizon. Nunn soils have <br />a dark colored surface layer. <br />Typical pedon of Ulm clay loam, 0 to 3 percent slopes, <br />1,370 feet north and 240 feet west of southeast corner <br />sec. 33, T. 1 N., R. 68 W. <br />Ap-0 to 5 inches; brown (10YR 513) clay loam (lark grayish brown <br />(10YR 4/2) moist; moderate fine granular structure; slightly hard, <br />firm; calcareous; mildly alkaline; abrupt smooth boundary. <br />132t-b to 13 inches; brown (10YR 5/3) clay, dark grayish brown UOYR <br />4/2) moist; weak coarse angular blocky structure parting to <br />moderate medium angular blocky; extremely hard, extremely firm; <br />common moderately thick clay, films on faces of peds; calcareous; <br />mildly alkaline; clear smooth boundary. <br />B3ca-13 to 19'inches; pale bmwn (10YR 6/3) clay, brown (10YR 5/3) <br />moist; weak coarse angular blocky structure; extremely hard, ex- <br />tremely firm; few thin clay films on faces of some peds; some visi- <br />ble lime in fine seams; calcareous; moderately alkaline; gradual <br />smooth boundary. <br />Cto 84 inches; very pale brown (10YR 7/3) clay, pale brown <br />00YR 613) moist; weak coarse subangular blocky structure; ex- <br />tremely hard, very firm; some visible lime occuring in medium soft <br />masses; calcareous; moderately alkaline; gradual smooth boundary. <br />C2ca--34 to 60 inches; very pale brown (10YR 7/3) clay loam, pale <br />brown (IOYR 6/3) moist; weak coarse subangular blocky structure; <br />very hard, firm; some visible lime oecuring in medium soft. masses; <br />calcareous; moderately alkaline. <br />Thickness of the solum ranges from 15 to 36 inches. Rork fragments <br />make up 0 to 6 perent of the solum. <br />The A horizon has hue of 10YR or 2.5Y, value of '5 or 6 dry art(] 4 or 5 <br />moist, and chroma of 2 or 3. The 62t horizon is commonly clay that is 40 <br />to 50 percent clay. <br />Valent series <br />The Valent seties. consists of deep, excessively drained <br />soils that formed in eolian deposits- Valent soils are on <br />plains. Slopes are 0 to 9 percent. <br />Valent soils are near the Loup, Boel, Osgood, and Vona <br />soils- Loup and Boel soils are poorly drained. Osgood and <br />Vona soils have a B horizon. <br />Typical pedon of Valent sand, 0 to 3 percent slopes, <br />2,220 feet north and 132 feet west of southeast corner <br />sec. R, T. 4 N., R- 62 W- <br />Al -0 to 8 inches; brown (lOYR 5/3) sand, dark grayish brown (10YR <br />412) moist; single grained; loose; neutral; clear smooth boundary- <br />CI-8 to 60 inches; brown (IOYR 5/3) sand, dark grayish brown (10YR <br />412) moist; single grained; loose; neutral. <br />Coarse fragments make up 0 Iq 10 percent of the solum and are <br />mainly scattered gravel. Depth to free carbonates is more than 40 <br />inches. <br />The A horizon has hue of IOY R and 2.5Y, value of 5 or 6 dry and 3 to <br />5 moist, and chroma of2 or 3. <br />Vona series <br />The Vona series consists of deep, well drained to <br />somewhat excessively drained soils that formed in eolian <br />or alluvial deposits. Vona soils are on plains and high ter- <br />races. Slopes are 0 to 9 percent. <br />Vona soils are similar to the Olney and Terry soils and <br />are near the Ascalon, Bresser, Julesburg, Osgood, Otero, <br />and Valent soils. Olney, Ascalon, and Bresser soils are <br />more than 18 percent clay in the 132t horizon. Terry soils <br />have sandstone between 20 and 40 inches. Julesburg soils <br />have a dark colored surface layer. Osgood soils have an A <br />horizon that is coarser than loamy fine sand and is more <br />than 20 inches thick- Otero and Valent soils lack a A <br />horizon. <br />Typical pedon of Vona loamy sand, 0 to 3 percent <br />slopes, 180 feet north and 1,400 feet cast of southwest <br />corner sec. 25, T. 5 N., R. 61 W. <br />Al-0 to 6 inches; grayish brown (10YR 5/2) loamy sand, dark grayish <br />brown (10YR 4/2) moist; weak fine granular structure; soft, very <br />friable; neutral; clear smooth boundary. <br />A3--6 to 12 inches; grayish brown (10YR 512) fine sandy loam, dark <br />grayish brown (10YR 4/2) moist; weak coarse subangular blocky <br />structure; slightly hard, very friable; neutral; clear smooth bounda- <br />ry-