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DARVEY SERIES <br />LOCATION NM <br />Established Series <br />ev. CRL-RCP-RJA-ACT <br />11/97 <br />The Darvey series consists of very deep, well drained, moderately permeable soils that formed in <br />alluvium from calcareous sandstone, shale and limestone. These soils are on hills, fan terraces, and <br />valley fill. Slope ranges from 0 to 5 percent. Mean annual precipitation is about 12 inches and mean <br />annual air temperature is about 55 degrees F. <br />TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Ustic Haplocalcids <br />TYPICAL PEDON: Darvey loam - rangeland. (Colors are for dry soil unless otherwise noted.) <br />-0 to 6 inches; dark brown (10YR 4/3) loam, dark brown (10YR 3/3) moist; weak medium subangular <br />blocky structure; hard, friable, sticky and slightly plastic; many fine and few very fine roots; many fine <br />interstitial pores; strongly effervescent; moderately alkaline (pH 8.2); clear smooth boundary. (3 to 10 <br />inches thick) <br />Bw1--6 to 20 inches; brown (7.5YR 5/4) loam, dark brown (7.5YR 4/4) moist; strong medium <br />subangular blocky structure; hard, friable, slightly sticky and slightly plastic; common very fine and fine <br />roots; many fine tubular pores; moderately alkaline (pH 8.2); gradual smooth boundary. <br />Bw2--20 to 31 inches; brown (7.5YR 5/4) loam, dark brown (7.5YR 4/4) moist; moderate medium <br />subangular blocky structure; hard, friable, slightly sticky and slightly plastic; common very fine roots; <br />common fine tubular pores; strongly effervescent; moderately alkaline (pH 8.2); clear irregular <br />boundary. (Combined thickness of Bw horizons is 7 to 30 inches) <br />Bk1-31 to 38 inches; pink (7.5YR 7/4) loam, light brown (7.5YR 6/4) moist; weak medium subangular <br />blocky structure; hard, friable, sticky and plastic; common very fine roots; common fine tubular pores; <br />strongly effervescent; many calcium carbonate accumulations; moderately alkaline (pH 8.2); gradual <br />irregular boundary. (6 to 15 inches thick) <br />(Revised June 2008) Attachment 2.04.9-3-20