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Official Series Description - PENROSE Series <br />Buffalo Stone Quarry <br />LOCATION PENROSE CO+KS NE NM SD <br />• Established Series <br />AJC/GB <br />06/2006 <br />PENROSE SERIES <br />Page <br />Attachment 5 <br />The Penrose series consists of shallow, well aid somewhat excessively drained, <br />moderate to slowly permeable soils formed in`thin, calcareous, loamy materials <br />weathered in place from limestone and interbedded Limy materials. Penrose soils aze on hills, plains, <br />ridges, hogbacks, cuestas, and mesa tops!%Slopes aze 1 to 65 percent. Mean annual precipitation is about <br />13 inches and mean annual temperature is about 51 degrees F. <br />TAXONOMIC CLASS: Loamy, carbonatic, mesic Lithic Ustic Torriorthents <br />TYPICAL PEDON: Penrose chamnery loam -grassland. (Colors are for dry soil unless otherwise <br />noted). <br />A--O to 4 inches; light brownish gray (2.SY 6/2) channery loam, dazk grayish brown (2.SY 4/2) moist; <br />moderate fine granulaz structure; soft, very friable, slightly sticky and slightly plastic; 25 percent <br />charmers; calcareous; moderately alkaline; clear smooth boundary. <br />• C--4 to 15 inches; light gray (2.SY 7/2) channery loam, grayish brown (2.SY 5/2) moist; massive; <br />slightly hard, very friable, slightly sticky and slightly plastic; 20 percent limestone charmers; calcareous; <br />moderately alkaline; abrupt smooth boundary. <br />R--15 inches; limestone bedrock. <br />TYPE LOCATION: Fremont County, Colorado; about 01 mile east of "K" Street and about 125 feet <br />north of Highway No. 115 six feet from fence in the southeast quarter of Sec. 21, T. 18 S., R 68 W. <br />RANGE IN CHARACTERISTICS: <br />Soil moisture: The soil moisture control section is moist intermittently April through August; acidic <br />moisture regime bordering on ustic. <br />Mean annual soil temperature: 52 to 59 degrees F. <br />Mean summer soil temperature: 68 to 76 degrees F. <br />Depth'to lithic contact: 10 fo 20 inches to limestone <br />Depth to secondary calcium cazbonate: 0 to about 5 inches and is not more than 1/4 the thickness of the <br />control section <br />Gypsum content: 0 to 1.5 percent by weight <br />Calcium cazbonate equivalent: 40 to 75 percent <br />Electrical conductivity: 0 to 14 millimhos/cm in a major part of the control section <br />Continuous subhorizons of secondary calcium cazbonate and/or sulfate do not occur within the control <br />• section although some visible accumulation occurs in some pedons <br />Particle-size control section (weighted average): <br />http://www2.ftw.nres.usda.gov/osd/dat/P/PENROSE.html 6/28/2007 <br />