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, <br /> _ ' LE SUEUR SERIES <br /> The Le Sueur scrics consists of very deep,somawhac�oorly drained soils that formed in calcareous loamy <br /> , glacial till on moraines.These soils have moderate permeubility.Thcir slopes range From i to 3 percent. <br /> Mean annual prccipitation is about 29 inches.Mean annual air temperature is abou[47 Jegrees F. <br /> TAXONOMIC CLASS: Fine-ioamy, mixed, superactive, mesic Aquic Argiudolls <br /> TYPICAL PEDON: Le Sueur clay loarr} with a 2 percent plane slope on glacial till plain <br /> in a pastured woodlot. (Colors are for moist.soil unless otherwise noted.) <br /> Ag--O to i2 inches; black{lOYR 2/1} clay loam, dark grayish brown (lOYR 4/2) dry; <br /> moderate mediurt�.granular blocky s[ructure parting to moderate fine subanguiar; friable; <br /> about 2 percent gravel; slightly acid; abrupt smooth boundary. (6 to 22 inches theck) <br /> AB--12 to 17 inches; very dark gray (lOYR 3/1) and about 25 percent dark yellowish � <br /> , brown (lOYR 4/4} clay loam, grayish brown (lOYR S/2}dry; moderate fine subangular <br /> blocky structure; friable; about 2 percent gravei; slightly acid; clear smooth boundary. (Q <br /> to 8 inches thick) <br /> � . Bt1--17 to 24 inches; olive brown (2.SY 4/3) clay loam; moderate medium prismatic <br /> structure parting to strong fine subangular blocky; friable; common dark brown {lOYR <br /> 3/3) cIay films on faces of peds; about 2 percent gravei; few fine faint dark grayish brown <br /> �, <br /> (2.5Y 4/2)Fe depletions; slightly acid; clear smooth boundary. <br /> Bt2--24 to 37 inches; olive brown{2.5Y 4/3}clay loam; weak medium prismatic <br /> structure parting to moderate�ne subangular blocky; friable; common very dark grayish <br /> brown (2.SY 3/2)clay fiims on faces of peds and in pores; about 4 percent gravel; few <br /> fine faint grayish brown (2.SY S/2)Fe depletions and few fine prozninent dark yellowish <br /> brown (IOYR 4/6)Fe concentrations;neutral; abrupt smooth boundary. (Combined <br /> thickness of the Bt hor'izon is 16 to 4S inches.} � <br /> � Bk--37 to 46 inches; light olive brown (2.5Y 5/4}loam; weak medium suhangular blocky <br /> structure; friable; common light gray pale brown (2.5Y 7/2) soft masses of carboante <br /> '-' thraughout and carbonate threads; about S percent gravel; common medium distinct <br /> •grayish brown (2.SY 5/2)Fe depletions and common medium distinct light olive brown <br /> (2.SY S/6} Fe concentrations; strongly effervescent; slightly alkaiine; ciear smooth � <br /> boundary. <br /> C--46 ta 80 inches; grayish brown (2.SY 5/2) Ioam; weak medium subangular blocky <br /> • structure parting to massive; friable; common light gray pale brown {2.SY 7/2) soft <br /> masses of carbonate throughout and carbonate threads; about 5 percent gravel; many <br /> common medium promine�t dark yellowish brown (lOYR 4/4) and dark yellowish brown <br /> (lOYR 4/6) Fe concentrations; strongly effervescent; slightly alkaIine. <br /> TYPE LOCATION: Waseca County,Minnesota; abouc 9 miles south of Waseca; 2000 <br /> - feet south and 1950 feet sou[t� of northwest corner of sec. 26,T. 108 N., R. 22 W.; USGS � <br /> , <br />