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RECEIVED
<br />94
<br />
<br />~ APR 19 1999 soil survey
<br />Division of Minerals 6 Geology
<br />Al-0 to 3 inches; brown (10YR 4/3) gravelly loam, dark
<br />brown (10YR 3/3) moist; weak coarse granular
<br />structure that parts to moderate fine granular; soft,
<br />friable, nonsticky and nonplastic; about 25 percent
<br />gravel; moderately alkaline; abrupt smooth
<br />boundary.
<br />Ctca-3 to 9 inches; brown (10YR 5/3) gravelly loam,
<br />brown (10YR 4/3) moist; weak medium subangular
<br />blocky structure that parts to weak fine granular;
<br />slightly hard, friable, nonsticky and nonplastic; about
<br />30 percent gravel; visible calcium carbonate
<br />occurring as concretions, in seams, and as coatings
<br />on rock fragments; calcareous; moderately alkaline;
<br />clear smooth boundary.
<br />C2ca-9 to 21 inches; white (10YR 8/2) very gravelly
<br />loam, very pale brown (10YR 7/3) moist; massive;
<br />hard, friable, nonsticky and nonplastic; about 40
<br />percent gravel; calcium carbonate visible as finely
<br />divided forms and as thick coatings on rock
<br />fragments; calcareous; moderately alkaline; clear
<br />smooth boundary.
<br />C3ca-21 to 60 inches; very pale brown (10YR 7/4) very
<br />gravelly loam, light yellowish brown (tOYR 6/4)
<br />moist; massive; slightly hard, Triable, nonsticky and
<br />nonplastic; about 55 percent gravel; calcium
<br />carbonate visible as seams and coatings on rock
<br />fragments; calcareous; moderately alkaline.
<br />Depth to calcareous material ranges from 0 to 5
<br />inches, and depth to concentrated layers of calcium
<br />carbonate accumulation (calcic horizon) ranges from 5 to
<br />40 inches. Clay content averages 10 to 20 percent
<br />throughout the control section. Rock fragments make up
<br />35 to 75 percent of the control section and are
<br />predominantly less than 10 inches in diameter. The
<br />steeper soils normally have larger amounts of gravel and
<br />cobblestones in the profile than do the more gently
<br />sloping soils.
<br />Gelkie Series
<br />The Gelkie series consists of deep, well drained soils
<br />on toe slopes and mountain side slopes. These soils
<br />formed in colluvium from igneous rock. The slope is 3 to
<br />25 percent. The average annual precipitation is about 17
<br />inches, and the average annual air temperature is about
<br />36 degrees F.
<br />These soils are fine-loamy, mixed Argic Cryoborolls.
<br />Typical pedon of Gelkie loam, in an area of
<br />Bushvalley-Gelkie-Rock outcrop complex, 3 to 65
<br />percent slopes, on the north side of the road; about
<br />1,850 feet west and 2,000 feet south of the NE corner of
<br />sec. 13, T. 42 N., R. 5 E.
<br />Al-0 to 4 inches; grayish brown (10YR 4/2) loam, very
<br />dark brown (10YR 2/2) moist; moderate medium
<br />and fine granular structure; slightly hard, friable,
<br />slightly sticky and slightly plastic; neutral; gradual
<br />smooth boundary.
<br />A3-4 to 13 inches; grayish brown (10YR 5/2) light clay
<br />loam, very dark grayish brown (10YR 3/2) moist;
<br />weak medium subangular blocky structure; slightly
<br />hard, friable, slightly sticky and slightly plastic; 10
<br />percent cobblestones; mildly alkaline; clear smooth
<br />boundary.
<br />62t-13 to 24 inches; brown (10YR 5/3) gravelly clay
<br />loam, dark grayish brown (10YR 4/2) moist; weak
<br />medium subangular blocky structure; hard, friable,
<br />sticky and plastic; tew thin clay films in root
<br />channels and bridging on sand grains; 15 percent
<br />gravel; mildly alkaline; clear smooth boundary.
<br />C1ca-24 to 42 inches; pale brown (10YR 6/3) gravelly
<br />loam, dark brown (10YR 4/3) moist; massive;
<br />slightly hard, friable, slightly sticky and slightly
<br />plastic; calcareous with a few spots of lime; 20
<br />percent gravel, 5 percent cobblestones; moderately
<br />alkaline; gradual smooth boundary.
<br />C2-42 to 60 inches; pale brown (10YR 6/3) very
<br />gravelly loam, dark brown (10YR 4/3) moist;
<br />massive; slightly hard, triable, slightly sticky and
<br />slightly plastic; calcareous; 35 percent gravel and 10
<br />percent cobblestones; moderately alkaline.
<br />Depth to uniformly calcareous material ranges from 20
<br />l0 30 inches. Rock fragments, mainly 1 /2 inch to 3
<br />inches in size, make up 0 to 30 percent of the control
<br />section. In some pedons the calcium carbonate
<br />equivalent in the lower subhorizons ranges from 4 to 10
<br />percent.
<br />Gerrard Series
<br />In the Gerrard series are deep, poorly drained soils
<br />that are on terraces, fans, and flood plains on alluvial
<br />valley floors. These soils formed in alluvium. The slope is
<br />0 to 3 percent. The average annual precipitation is about
<br />7 inches, and the average annual air temperature is
<br />about 41 degrees F.
<br />These soils are fine-loamy over sandy or sandy-
<br />skeletal, mixed, frigid Typic Haplaquolls.
<br />Typical pedon of Gerrard loam, 0 to 3 percent slopes,
<br />about 2,200 feet west and 400 feet north of the SE
<br />corner of sec. 27, T. 47 N., R. 9 E.
<br />A11-0 to 4 inches; dark gray (10YR 4/1) loam, very
<br />dark brown (10YR 2/2) moist; weak coarse platy
<br />structure that parts to weak fine subangular blocky;
<br />slightly hard, friable, slightly sticky and plastic;
<br />common very fine roots; mildly alkaline; clear
<br />smooth boundary.
<br />A12-4 to 8 inches; very dark grayish brown (10YR 3/2)
<br />gravelly clay loam, very dark brown (10YR 2/2)
<br />moist; weak fine subangular blocky structure; slightly
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