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LOCATION GULNARE <br />Tentative Series <br />Rev. LAN/GB/AP <br />04/2001 <br />CO <br />GULNARE SERIES <br />(~ 1 <br />The Gulnaze series consists of shallow, well drained soils that formed in residuum and colluvium from <br />sandstone. Gulnare soils aze on mountain slopes, hills, and ridges. Slopes range from 5 to 50 percent. <br />Mean annual temperature is about 44 degrees F., and the mean annual precipitation is about 19 inches. <br />TAXONOMIC CLASS: Loamy, mixed, superactive, frigid Lithic Haplustalfs <br />TYPICAL PEDON: Gulnaze loam -open stand of ponderosa pine. (Colors aze for dry soil unless <br />otherwise stated.) <br />Oi--O inches to 2; partially decomposed pine needles. <br />E--2 to 5 inches; grayish brown (lOYR 5/2) loam, very dazk grayish brown (lOYR 3/2) moist; weak fine <br />granulaz structure; very friable, nonsticky and nonplastic; 5 percent cobbles, 2 percent stones; neutral <br />(pH 6.8); abrupt smooth boundary. (2 to 4 inches thick) <br />Btl--S to 13 inches; brown (7.SYR 514) gravelly clay loam, dazk brown (7.SYR 4/4) moist; moderate <br />medium subangular blocky structure parting to moderate fine subangular blocky; hazd, firm, sticky and <br />plastic; 15 percent pebbles; neutral (pH 7.0); clear smooth boundary. <br />(6 to 9 inches thick) <br />Bt2--13 to 18 inches; strong brown (7.SYR 5/6) gravelly sandy clay loam, strong brown (7.SYR 4/6) <br />moist; moderate medium subangular blocky structure; hard, firm, sticky and plastic; 20 percent pebbles; <br />moderately acid (pH 5.6); abrupt wavy boundary. (2 to 6 inches thick) <br />Cr--18 to 20 inches; decomposed sandstone. (0 to 3 inches thick). <br />R--20 inches; sandstone. <br />TYPE LOCATION: Las Animas County, Colorado; about 1 mile south of McDonald Reservoir and <br />1/2 mile west of the Sazcillo Canyon Road; 2,500 feet south and 800 feet west of the northeast comer of <br />Sec. 1, T. 33 S., R. 67 W.; Latitude 37 degrees, 12 minutes 4 seconds N., longitude 104 degrees, 49 <br />minutes 58 seconds W. <br />RANGE IN CHARACTERISTICS: (Depths aze given from the mineral soil surface) <br />Soil moisture regime: ustic bordering on udic. <br />Mean annual soil temperature ranges from 44 to 46 degrees F. <br />Mean summer soil temperature ranges from 57 to 60 degrees F. <br />Depth to ]ithic contact: 10 to 20 inches. <br />Thickness of the azgillic horizon: 8 to 12 inches. <br />Particle size control section: (weighted average) <br />http://ortho.ftw.nres.usda.gov/osd/daUG/GULNARE.html 09/10/2003 <br />