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4/87 • Las Animas series. The Las Animas series consists of deep, poorly and somewhat poorly drained soils on stream terraces. These soils formed in alluvium. Slope is 0 to 1 percent. Average annual precipitation is 1~~ to 15 inches, and average annual air temperature is 51 to 53 degrees F. These soils are coarse-loamy, mixed (calcareous), mesic Typic Fluvaquents. Typical pedon of Las Animas loam, 0 to 1 percent slopes, about 1,200 feet north and 1,300 feet east of the southwest corner of Sec. 5, T. 33 S., R. 63 W. A--O tip 3 inches; dark grayish brown (lOYR 4/2) Inam, very dark grayish brown (lOYR 3/2) moist; weak fine granular structure; slightly hard, friable, nonsticky and nonplastic; calcareous; moderately alkaline; clear smooth boundary. C1--3 to 11 inches; grayish brown (lOYR 5/2) fine sandy loam, dark gray and dark grayish brown (SOYR 4/1 and lOYR 4/2) moist; common fine distinct dark yellowish brown (lOYR 4/6) mottles; moderately medium platy structure; slightly hard, friable, nonsticky and nonplastic; calcareous; moderately alkaline; clear smooth boundary. • C2--il to 23 inches; brown (10YR 5/3) stratified sandy loam and fine sandy laam, dart: brown (lOYR 4/3) moist; many medium distinct dark yellowish brown (lOYR 4/G) and dark gray (N 4/0) mottles; weak fine platy structure; soft, very friable, nonsticky and nonplastic; calcareous; moderately alkaline; abrupt smooth boundary. C3--23 to 26 inches; gray (lOYR 5/1> silt loam, very dark gray (lOYR 3/1) moist; common medium distinct dark yellowish brown (SOYR 4/6) mottles; moderate medium platy structure; slightly hard, friable, slightly sticky and slightly plastic; calcareous; moderately alkaline; abrupt wavy boundary. C4--26 to 36 inches; gray (lOYR 5/i) loamy sand, dark gray <10YR 4/1> moist; common fine distinct dark yellowish brown (30YR 4/6) mottles; massive; soft, very friable, nonsticky and nonplastic; mildly alkaline; clear wavy boundary. G5--36 to 60 inches; pale brawn (lOYR 6/3) sand, brown (10YR 4/3) moist; many fine distinct yellowish brown (10YR 5/6) mottles; massive;lonse,nonsticky and nonplastic;lU percent gravel mildly alkaline. Pedr-ock is at a depth of 60 inches or more. The water table is usually at a depth of 12 to 36 inches. Lime is at a depth of 0 to 10 . inches. Reaction is mildly alkaline or moderately alkaline throughout the profile. A horizon: Texture is loam, fine sandy loam, ar loamy fine sand. C horizon: Texture is stratified fine sandy loam, sandy loam, Inamy sand, sand, or silt loam. Glay content is 3 to 16 percent.