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PINON SERIES <br />LOCATION PINON NM +UT <br />Established Series <br />RD: BDS /CDURJA <br />5/86 <br />The Pinon series consists of shallow, well drained, moderately slowly permeable soils that formed in <br />alluvium and residuum derived from limestone. These soils are on knolls, ridges, mesas and hillslopes <br />with slopes ranging from 1 to 30 percent. Mean annual precipitation is about 13 inches; mean annual <br />temperature is about 53 degrees F. <br />TAXONOMIC CLASS: Loamy, mixed, mesic Lithic Ustollic Calciorthids <br />TYPICAL PEDON: Pinon channery loam - rangeland. (Colors are for dry soil unless otherwise noted.) <br />A - -O to 7 inches; brown (7.5YR 5/3) channery loam, dark brown (7.5YR 4/3) moist; moderate very fine <br />granular structure; soft, very friable, slightly sticky and slightly plastic; many fine and fine roots; about <br />4 percent limestone fragments; strongly effervescent; disseminated calcium carbonate; moderately <br />alkaline; clear smooth boundary. (3 to 10 inches thick) <br />Bkl - -7 to 10 inches; light brown (7.5YR 6/3) channery loam, brown (7.5YR 5/3) moist; massive; slightly <br />hard, very friable, slightly sticky and slightly plastic; strongly effervescent with common large <br />concretions, few thin seams and streaks of calcium carbonate; moderately alkaline; clear smooth <br />boundary. (2 to 4 inches thick) <br />Bk2 - -10 to 16 inches; pinkish white (7.5YR 8/2) channery loam, pinkish gray (7.5YR 6/2) moist; <br />massive; slightly hard, very friable, slightly sticky and slightly plastic; few fine and medium roots; <br />violently effervescent with many soft segregations of calcium carbonate; moderately alkaline; abrupt <br />smooth boundary. (5 to 10 inches thick) <br />R - -16 inches; fractured limestone with many lime coatings on rock fragments. <br />TYPE LOCATION: Torrance County, New Mexico; 2,340 feet east of the NW corner sec. 15, T. 2 N., <br />R. 7 E. <br />RANGE IN CHARACTERISTICS: <br />Depth to bedrock: 10 to 20 inches <br />Rock fragments: 5 to 35 percent <br />Soil temperature: 52 to 57 degrees F. <br />Reaction: mildly to moderately alkaline <br />A horizon: Hue - 7.5YR or 10YR <br />Value: 4 through 6 dry, 2 through 5 moist <br />Chroma: 2 through 4 <br />Bk horizon: Hue - 5YR through 10YR <br />Value: 5 through 8 dry, 4 through 7 moist <br />Chroma: 2 through 4 <br />Texture: loam, sandy clay loam, or clay loam (averages 18 to 30 percent clay). <br />Calcium carbonate equivalent: 15 to 40 percent <br />COMPETING SERIES: These are the Bisodi (T), Shalaco (T), and Wayneco (T) series. Bisodi, Shalaco <br />and Wayneco soils have less than 18 percent clay. <br />Attachment 2.04.9 -3 -24 <br />