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oaquin County, California 191
<br /> 44 to 55 inches; pale brown (10YR 6/3) fine sandy slightly sticky and slightly plastic; common very fine
<br /> m, dark brown (10YR 4/3) moist; common and fine roots; few fine tubular pores; neutral;
<br /> edium distinct brown (7.5YR 5/4) mottles, dark gradual smooth boundary.
<br /> own (7.5YR 4/4) moist; massive; slightly hard, Bk-25 to 38 inches; brown (10YR 5/3) clay loam, dark
<br /> ery friable, slightly sticky and slightly plastic; few brown (10YR 3/3) moist; moderate medium
<br /> fine roots; many very fine interstitial pores; subangular blocky structure; hard, triable, slightly
<br /> utral; clear wavy boundary. sticky and slightly plastic; common fine and very
<br /> 35 to 64 inchos; pnlo brown (1 OYR 6/3) loamy fins and tow medium roots; few vary fine tubular
<br /> arse sand, brown (10YR 5/3) moist; massive; and interstitial pores; slightly effervescent;
<br /> htly hard, very friable, nonsticky and nonplastic; accumulations of lime in seams; mildly alkaline;
<br /> ew very fine roots; many very fine interstitial pores; gradual smooth boundary.
<br /> ieutral. C1-38 to 49 inches; pale brown (10YR 6/3) loam, dark
<br /> brown (7.5YR 4/2) moist;.moderate coarse
<br /> finct or prominent mottles are in the lower part of subangular blocky structure; hard, friable, slightly
<br /> 3 horizon or in the C horizon. The content of gravel sticky and slightly plastic; common very fine and
<br /> o 15 percent. fine roots; few medium and few very fine tubular
<br /> e A horizon has color of 10YR 4/1, 4/2, 5/1, or 5/2. and interstitial pores; slightly effervescent;
<br /> to moist, it has color of 1 OYR 3/1 or 3/2. Reaction is disseminated lime; mildly alkaline; gradual smooth
<br /> erately acid or slightly acid. boundary.
<br /> e Bt horizon has color of 1 OYR 5/2 or 5/3. When C2-49 to 64 inches; brown (1 OYR 5/3) loam, dark
<br /> it, it has color of 10YR 4/2 or 4/3. It is sandy loam brown (7.5YR 4/4) moist; moderate medium
<br /> 3ndy clay loam. Reaction is slightly acid or neutral. subangular blocky structure; slightly hard, friable,
<br /> e C horizon has color of 1 OYR 5/3 or 6/3. When slightly sticky and slightly plastic; many very fine
<br /> st, it has color of 10YR 4/3 or 5/3. It is fine sandy roots; common very fine tubular and interstitial
<br /> i or loamy coarse sand. pores; slightly effervescent; disseminated lime;
<br /> moderately alkaline.
<br /> gno Series
<br /> he Cogna series consists of well drained soils on The A horizon has color of 7.5YR 5/2 or 1 OYR 4/2,
<br /> an terraces and alluvial fans. These soils are very 4/3, 5/2, or 5/3. When moist, it has color of 7.5YR 3/2
<br /> �Ilep,Thuy formed In alluvium derived Irnm mixed rock or 10YR 3/2 or 3/3, II is sli0htly acid to mildly alkaline.
<br /> }$ 'ees. Slope ranges from 0 to 2 percent. Areas adjacent to streams or sloughs have overwash of
<br /> oils of the Cogna series are fine-silty, mixed, stratified fine sandy loam 12 to 20 inches thick.
<br /> retic Calcic Pachic Haploxerolls. The Bk horizon has color of 7.5YR 5/4 or 6/4 or 1
<br /> Typical pedon of Cogna loam, 0 to 2 percent slopes; 10YR 4/3, 5/3, 5/4, 6/3, or 614. When moist, it has color
<br /> i0 feet north and 1,950 feet east of the southwest of 7.5YR 4/4 or 10YR 3/3, 3/4, 4/3, or 4/4. It is loam, silt
<br /> er of sec. 16, T. 2 N., R. 8 E., Linden quadrangle: loam, or clay loam. Accumulations of lime occur as
<br /> seams or as soft masses.
<br /> -0to 6 inches; dark grayish brown (10YR 4/2) loam, The C horizon has the same colors and textures as
<br /> very dark grayish brown (10YR 3/2) and dark brown the Bk horizon. Reaction is mildly alkaline or moderately
<br /> (10YR 3/3) moist; weak medium subangular blocky alkaline.
<br /> structure; hard, friable, slightly sticky and slightly
<br /> plastic; few fine and medium and common very fine Columbia Series
<br /> oots; few very fine interstitial and tubular pores;
<br /> slightly acid; clear smooth boundary. The Columbia series consists of somewhat poorly
<br /> 6 to 13 inches; dark grayish brown (1 OYR 4/2) loam, drained soils on flood plains. These soils are artificially
<br /> very dark grayish brown (10YR 3/2) moist; drained. They are very deep. They formed in alluvium
<br /> moderate medium subangular blocky structure; derived from mixed sources. Slope ranges from 0 to 2
<br /> hard, friable, slightly sticky and slightly plastic; percent.
<br /> common very fine, fine, medium, and coarse roots; Soils of the Columbia series are coarse-loamy,
<br /> common very fine tubular and interstitial pores; mixed, nonacid, thermic Aquic Xerofluvents.
<br /> neutral; clear smooth boundary. Typical pedon of Columbia fine sandy loam, drained,
<br /> d 13 to 25 inches; dark brown (10YR 413) loam, very 0 to 2 percent slopes; 300 feet north and 850 feet east
<br /> �dark grayish brown (I OYH 3/2) moist; moderatu of thu suuthwusl curnur ul suc. 19, 1 , 4 N., 11. 8 L.,
<br /> medium subangular blocky structure; hard, friable, Lockeford quadrangle:
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