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rtctcristic abrupt lower boundary. Tonguing of
<br />into the B horizon is expressed by very
<br />dark-gray and gray coatings on faces of peds.
<br />^mre of the B2 horizon is silty clay or clay.
<br />'.V^ntent in the finest textured layer ranges
<br />45 to 60 percent. Sand content is less than 10
<br />*?ent and is typically less than 5 percent. Tex-
<br />^of the C horizon is variable, ranging from clay
<br />*^iilty clay loam, silt loam, or loam. In places
<br />^ the C horizon is heavy silty clay loam or
<br />it texminatcs at a depth of less than 72
<br />'^es and conmonly less than 54 inches. Silty
<br />^Btnts do not occur in all areas, but where they
<br />-occur, they are up to 4 feet in thickness. Loamy
<br />cosanonly occurs within a depth of 10 feet. The
<br />Vhorizon is medium acid to neutral. The B horizon
<br />j neutral to strongly acid, and the C horizon is
<br />n^iy to Strongly calcareous .
<br />As mpped in Hennepin County, these soils are
<br />jrker in color in the upper part of the B horizon
<br />-ija the defined range for the Shields series. This
<br />ifference, however, does not alter their usefulness
<br />behavior. , j »
<br />Shields soils have a thinner, lifter colored A
<br />•^2on than the associated Minnetonka soils. They
<br />^ higher in clay content and lower in sand content
<br />‘jun similar Dundas soils.
<br />Shields silty clav loam (Sh .--This nearly level
<br />oil occupies flats and shallow drainageways . Areas
<br />n mostly 2 to 5 acres ir size, but a few tracts
<br />up to IS acres in size.
<br />Included in mapping wer^ small areas of Dalbo
<br />;oils on slight rises and a few imall areas of clay-
<br />rf soils in depressions.
<br />This soil needs drainage to be productive. Be-
<br />:ause water is removed slowly bv tile drains, tiles
<br />med to be closely spaced to be «><^tective. If prop-
<br />?rly drained and managed, this soil moderately
<br />•ell suited tc crops grown in the ccunty. An occa-
<br />ional sod crop helps tile drains to remive excess
<br />•Iter more rapidly. (Capability unit IIw-:; wood-
<br />ond group 6; building site group 11)
<br />Shorewood Series
<br />The Shorewood series consists of deep, moderately
<br />•ell drained soils that formed in calcareous clayey
<br />iiments 2 to 5 feet thick over calcareous loamy
<br />11. In many places a 1-foot to 3-foot layer of
<br />4ty sediment occurs between the clay and the loamy
<br />:i. These are nearly level to gently sloping
<br />’.Is in smooth, convex positions on hills and
<br />oils. Slopes are mostly simple. The native
<br />fetation was mixed hardwoods. Shorewood soils are
<br />iociated mainly with Hayden and Erin soils.
<br />In a representative profile, the surface layer is
<br />»ck silty clay loam about 10 inches thick. The
<br />•osoil is about 23 inches thick and consists of
<br />ree layers. The upper part is very dark grayish -
<br />own silty clay; the middle part is olive-brown
<br />Ity clay, and the lower part is light olive-brown
<br />Ity clay. The imderlying material is light olive-
<br />“Wwn clay loam.
<br />Shorewood soils have high available -noisture ca
<br />pacity, moderately slow permeability, and medium to
<br />slow internal drainage. The ’-vater table in the more
<br />nearly level areas is at a depth of 3 to 5 feet
<br />during wet periods. The root zone is deep, but
<br />plant roots develop slowly in the firm, clayey sub
<br />soil. The surface layer is high in organic-matter
<br />content. Shorewood soils are very fertile, but
<br />crops grown on them respond well to additional
<br />fertilizer.
<br />Representative profile of Shorewood silty clay
<br />loam, 0 to 2 percent slopes, in a cultivated field,
<br />240 feet east and 320 feet north of the southwest
<br />comer, SEl/4 SEl/4 SWl/4 sec. 28, T. 117 N., R. 23
<br />W.:
<br />Ap--0 to 10 inches, black (lOYR 2/1) silty clay
<br />loaz.; strong, very fine, subangular blocky
<br />structure; friable; neutral; clear, smooth
<br />boundary .
<br />B1--10 to IS inches, very dark grayish-brown (2.5Y
<br />3/2) silty clay; strong, fine, subangular
<br />blocky structure; firm; few pores; common,
<br />patchy, grainy coatings on ped faces; medium
<br />acid; clear, smooth boundary.
<br />B2t--18 to 30 inches, olive-brown (2.SY 4/4) silty
<br />clay; strong, medium, suban^lar blocky and
<br />angular blocky structtire; firm; common pores;
<br />thick, moderately patchy, black and very dark
<br />brown clay films on ped faces; sli^tly acid;
<br />clear, smooth boundary.
<br />B3t—30 to 33 inches, light olive-brown (2.SY 5/4)
<br />silty clay; moderate, coarse, subangular
<br />blocky structure; firm; common pores; thin,
<br />patchy, black clay films on vertical ped
<br />faces; few black organic stains; neutral,
<br />clear, smooth boundary.
<br />C--33 to 60 inches, li^t olive-brown (2.5Y 5/4)
<br />clay loam; weak, fine and medium, subangular
<br />blocky structure; firm; many pores; few, fine,
<br />black, old root <±annel fillings; common,
<br />medium, prominent, yellowish-brown (lOYR 5/8)
<br />iron oxide concretions; calcareous; moderately
<br />alkaline.
<br />:he solum is 23 to 40 inches thick. The A hori
<br />zon is black, very dark brown, or very dark gray.
<br />The B2 horizon ranges from dark grayish brown to
<br />light olive brown and yellowish brown in color. Tex
<br />ture is typically silty clay that is 40 to 50 per
<br />cent clay, but clay content ranges from 35 to 60
<br />percent. Sand content is less than 15 percent ar
<br />centers aiound 5 percent. The C horizon is grayish
<br />brown to light olive brown. Te.xture is silty clay,
<br />silty clay loam, clay loam, silt loam, or loam,
<br />depending upon thickness of the sediments. There is
<br />commonly loamy till within a depth of 7 feet. The A
<br />horizon is slightly acid to neutral, and the B hori
<br />zon is neutral to medium acid.
<br />Shorewood soils are lower in sand content and
<br />typically higher in clay content than similar Kil
<br />kenny, Le Sueur, and Lerdal soils. They have a
<br />thicker and darker colored A horizon than the asso
<br />ciated Dalbo soils . They are better drained than
<br />the associated Minnetonka soils.
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