2002-06-18_PERMIT FILE - M2002062

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Official Series Description -POTTER Series Page 3 of 4 Coarse fragments: 20 to 60 percent of moderately to strongly cemented caliche fragments Visible calcium carbonate: 50 to 70 percent as masses and nodules Calcium carbonate equivalent: 40 to 60 percent and is moderately cemented in some pedons Effervescence: strong or violent Reaction: slightly to moderately alkaline BCk horizons: Hue: 7.5 YR or lOYR Value: 7 or 8 dry, 6 or 7 moist Chroma: 1 to 3 Texture: gravelly, very gravelly or extremely gravelly fine sandy loam, loam, or clay loam. Coazse fragments: The horizon ranges from 30 to 80 percent by volume of moderately to strongly cemented caliche containing intermingled pockets of pinkish, loamy, calcareous soil material or soft caliche beds. Pendants of calcium carbonate are on the lower surface of caliche plates in the BCk horizon in some pedons. Calcium carbonate equivalent: 50 to 80 percent COMPETING SERIES: There are no competing series in the same family. Similar soils include the Friona, Kimbrou~h, Polar, Sharvana, Slaughter, Tascosa, and Yellowhouse series. Friona, Kimbrough, Sharvana, and Slaughter series: have petrocalcic horizons. Polaz and Tascosa series: contain more than 35 percent siliceous gravel. Yellowhouse series: has mixed mineralogy. GEOGRAPHIC SETTING: Pazent material: loamy, calcareous sediments derived from the upper part of the Ogallala Formation of Miocene-Pliocene age. Landform: very gently to steep sloping convex hills, ridges, and upper side slopes, around the margin of larger playa lakes, ancient drainageways, and along the Caprock Escarpment. Slopes: 1 to 30 percent. Mean annual air temperature: 55 to 61 degrees F. Mean annual soil temperature: 57 to 63 degrees F. Mean annual precipitation: 16 to 21 inches. Frost-free period: 190 to 220 days. Elevation: 2,300 to 3,100 feet Thornthwaite annual P-E Index Values: 30 to 34. GEOGRAPHICALLY ASSOCIATED SOILS: These are the similar Kim...hroulhPolar, Tascosa, and Yellowhouse series and the Berda, Bippus, Mobeetie, and Veal series. Berda soils are on slightly lower landscape positions and have mixed mineralogy. Bippus soils are on lower landscape positions and have a mollic epipedon. Kimbrough soils are on higher landscape positions and have a petrocalcic horizon. Mobeetie soils are on slightly lower landscape positions and have 18 percent or less silicate clay in the particle-size control section. Polar and Tascosa soils are on similar landscape positions and have mixed mineralogy and over 35 percent siliceous gravel in the particle-size control section. Veal soils are on similar landscape positions and do not have C horizons. Yellowhouse soils are on similar landscape positions and have mixed mineralogy. http://www.statlab.iastate.edu/cgi-bin/osd/osdname.cgi?-P 3/15/2002