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Official Series Description - LORENCITO Series https: / /soilseries.sc.egov. usda.gov /OSD_Docs /ULORENCITO... <br />LOCATION LORENCITO CO <br />Established Series <br />LAN /AP /JWB <br />01/2008 <br />LORENCITO SERIES <br />The Lorencito series consists of shallow, well drained soils that formed in slope alluvium <br />and residuum derived from shale and siltstone. Lorencito soils are on hills, pediments and <br />structural benches. Slopes range from 3 to 65 percent. Mean annual precipitation is about <br />16 inches and the mean annual temperature is about 49 degrees F. <br />TAXONOMIC CLASS: Clayey, mixed, superactive, nonacid, mesic, shallow Aridic <br />Ustorthents <br />TYPICAL PEDON: Lorencito channery clay loam, on a west facing, 25 percent slope in <br />pinyon pine and juniper at an elevation of 6,300 feet. (Colors are for dry soil unless <br />otherwise noted.) When described on March 9, 1971 the soil was moist from 0 to 13 <br />inches. The surface is covered by 25 percent channers. <br />A - -0 to 4 inches; grayish brown (2.5Y 5/2) channery clay loam, dark grayish brown (2.5Y <br />4/2) moist; moderate very fme granular structure; hard, firm, sticky and slightly plastic; <br />common very fme and fine roots; 30 percent channers; neutral (pH 6.8); clear smooth <br />boundary. (3 to 6 inches thick) <br />AC - -4 to 16 inches; grayish brown (2.5Y 5/2) parachannery clay, dark grayish brown <br />(2.5Y 4/2) moist; weak coarse subangular blocky structure that parts to moderate fme <br />subangular blocks; hard, firm, sticky and plastic; common very fme and fme roots; 20 <br />percent shale parafragments; neutral (pH 6.8); gradual smooth boundary. (7 to 14 inches <br />thick) <br />Cr - -16 to 26 inches; soft fractured interbedded shale and siltstone. <br />TYPE LOCATION: Las Animas County, Colorado; about 2.5 miles west of Cokedale, <br />Colorado; located about 1,100 feet south and 2,450 feet east of the northwest corner of <br />sec. 27, T. 32 S., R. 65 W.; Madrid USGS quad; lat. 37 degrees 8 minutes 49 seconds N. <br />and long. 104 degrees 39 minutes 31 seconds W., NAD 1927 <br />RANGE IN CHARACTERISTICS: <br />Soil moisture: The soil moisture control section is moist intermittently April through August <br />and driest from November through March; Ustic moisture regime bordering on Aridic. <br />Mean annual soil temperature: 48 to 50 degrees F <br />Mean summer soil temperature: 65 to 70 degrees F <br />Depth to paralithic contact: 10 to 20 inches to shale and siltstone <br />Particle -size control section (weighted average): <br />1 of 3 4/9/2012 4:34 PM <br />