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I <br /> i <br /> i <br /> i <br /> i <br /> LERDAL SERIES <br /> I'he Lerdal series consists of very deep,some�vhat poorly drained soits Eh1t formed in clape� gtacial tiil or <br /> tlotiv till on�lacial moraines.Permeability is slon.Slopes range from 1 to l3 percent.�lean annual <br /> precipitation is about 29 inches.�[ean annual air temperature is about�43 degrees E�. <br />� TAXONOI�IIC CLASS: Fine, smectitic, mesic Aeric Vertic Epiaqualfs <br />� TYPICAL PCDON: Lerdal silty clay loam with a plane slope oF about�4 percent on a <br />� glacial moraine at an elevation of (,290 feet in a pasture field. (Colors are for moist soil <br />' unless okherwise stated.) <br /> Ap--O to 7 inches; black(lOYR 2/l) silty clay loam, dark gray(IOYR�1/I)diy; weak <br />� ve�y fine subangular blocky structure; friable; abo�rt 2 percent gravel, mostly shale; <br />� slightly acid; abrupt smooth boundary (6 to l0 inches thick) <br />� E--7 to 9 inches; ve dack ra lOYR 3/l sil cla loam, gra lOYR 6/1 d� man <br /> �' g Y� ) h' Y Y� } 'Y� Y <br /> tine faint dark gray (IOYR�/t}Fe depletions; moderate �ne subangular blocky structure; <br /> friable; about 2 percent gravel, mostly sha le; modecately acid; clear wavy boundaty. (0 to <br />� <br /> 6 inches thick) <br /> Btl--9 to 14 inches; dark grayish brown (lOYR�/2}silry clay loam, fe�v medium <br />� prominent light olive brown(2.SY 5/6} Fe concentrations; moderate fine and medium <br /> subangular 6locky structure; fir�n; common faint vety dark gcayish bro�vn (lOYR 3/2) <br />' coatings and clay films on faces of peds; about 2 percent gravel, mostly shale; moderately <br /> acid; clear�vavy boundary. (0 to l0 inches thick) <br />' Bt1--14 to 20 inches;olive bro�vn (2.SY �4/4) silty clay loam;common fine distinct light <br />' olive bro�vn(2.SY 5/G) Fe concentrations; moderate fine and meclium subangular 6tocky <br />� stcucture; very �rm; common distinct ve�y dark grayish brown(2.SY 3/2}coatin�s and <br />` clay fiEiz�s on faces of peds; about 2 percent gcavel, mostly shale; very strongly acid; clear <br />; �vavy boundaiy. <br /> iBtgl--20 to 30 inches;grayish brown (2.�Y 5/2) silty clay;common fne distinct light <br /> i olive bro�vn(2.SY 5/6) Fe concentrations; moderate mediui» and coarse prismatic <br /> I stnicture; veiy tirm; common distinct ve ry dark grayish bro�vn(I OYR 3/2)clay films on <br />� faces of peds; about 2 percent gravel,mostly shaie; strongly acid; clear�vavy boundary. <br />� <br />� Btg2--30 to 42 inches;grayish brown {2.SY 5/2)clay loam; many fine and ►nedium <br /> distinet light olive brown (2.SY 5/4) Fe concentrations; �veak coarse prismatic structure; <br />� firEn; comtnon faint ve►y dark grayish bro�vn (2.SY 3/2)clay fiims on faces of peds and in <br /> f root channels; about 5 percent gravei, mostly shale; slightly acid; a6rupt r,vavy boundary. <br />� {Combined ti�ickness of Bt and Btg horizons is 15 to 36 incltes.) <br />� <br />; B��=-42 to 47 inches; olive brown (2.SY 4/�) clay loam; many fine and medium faint light <br />; olive brown(2.SY 5/4) Fe coneentrations; �veak coarse prismatic structure; firm; common <br />� prominent clay Eilms in root channels; abo�rt 5 percent gravel, mostly shale; slijtitly <br />� <br /> i <br /> I <br /> I <br />� <br />