Laserfiche WebLink
Official Series Description - ROMBO Series https: / /soilseries.sc.egov .usda.gov /OSD_Docs /R/ROMBO.html <br />LOCATION ROMBO NM CO <br />Established Series <br />Rev. GWA/RJA/LWH/LAN <br />11/2007 <br />ROMBO SERIES <br />The Rombo series consists of moderately deep, well drained, slowly permeable soils that <br />formed from colluvium and alluvium derived dominantly from shale. Rombo soils are on <br />mountains and hills. Slopes range from 3 to 60 percent. The mean annual temperature is <br />about 44 degrees F., and the mean annual precipitation is about 20 inches. <br />TAXONOMIC CLASS: Fine, mixed, superactive, frigid Typic Haplustepts <br />TYPICAL PEDON: Rombo cobbly silty clay loam -- rangeland. (Colors are for dry soil <br />unless otherwise noted.) <br />A - -0 to 3 inches; grayish brown (2.5Y 5/2) cobbly silty clay loam, very dark grayish brown <br />(2.5Y 3/2) moist; moderate fme granular structure; slightly hard, friable, slightly sticky and <br />slightly plastic; many fme, medium and coarse roots; few fme pores; 15 percent angular <br />gravel, cobbles, and stones; slightly alkaline; clear wavy boundary. (2 to 4 inches thick) <br />Bw - -3 to 20 inches; grayish brown (2.5Y 5/2) cobbly silty clay loam, dark grayish brown <br />(2.5Y 4/2) moist; weak coarse subangular blocky structure; very hard, very firm, <br />moderately sticky and moderately plastic; common fme, medium and coarse roots; few <br />fme pores; 25 percent angular gravel and cobbles; slightly alkaline; clear wavy boundary. <br />(12 to 20 inches thick) <br />Bk - -20 to 30 inches; grayish brown (2.5Y 5/2) cobbly clay, dark grayish brown (2.5Y 4/2) <br />moist; massive; very hard, very firm, moderately sticky and very plastic; few fine roots; <br />few fme pores; 25 percent angular gravel and cobbles; strongly effervescent; common <br />masses and coatings of lime on undersides of coarse fragments; slightly alkaline; clear <br />wavy boundary. (6 to 16 inches thick) <br />2Cr - -30 to 40 inches; soft shale with thin irregular bands of carbonaceous material. <br />TYPE LOCATION: Colfax County, New Mexico; about 12 miles west of Raton, New <br />Mexico, 3.8 miles up Potato Canyon from the junction of Potato Canyon Road with <br />Canadian River Road and 160 feet northwest up a south - facing slope from the junction of <br />a small drainage from the northwest with the Potato Canyon drainage; latitude 36 degrees, <br />53 minutes, and 03 seconds N., longitude 104 degrees, 38 minutes, and 45 seconds W.; <br />RANGE IN CHARACTERISTICS: <br />Soil Moisture: Intermittently moist in some part of the soil moisture control section in <br />spring and summer. Ustic moisture regime, typic subclass. <br />Mean annual soil temperature: 43 to 47 degrees F. <br />1 of 3 4/9/2012 4:36 PM <br />