From: Subject: Official Series Description - NEWVILLE Series Date: Wed, 7 Jul 2010 13:31:00 -0700 MIME-Version: 1.0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Location: http://ortho.ftw.nrcs.usda.gov/osd/dat/N/NEWVILLE.html X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5931 Official Series Description - NEWVILLE Series

LOCATION NEWVILLE           =
CA

Established Series
Rev. ELB/JEM/GMK/KP
11/2004

NEWVILLE SERIES

The Newville series consists of deep, well = drained=20 soils that formed in gravelly alluvium from sedimentary rock. Newville = soils are=20 on dissected terraces. Slopes range from 3 to 65 percent. The mean = annual=20 temperature is 60 to 63 degrees F. (15 to 17 degrees C.) and mean annual = precipitation from 15 to 25 inches (381 to 635 millimeters).

TAXONOMIC CLASS: Fine, smectitic, thermic Mollic Palexeralfs

TYPICAL PEDON: Newville gravelly loam - annual grass range. = (Colors=20 are for dry soil unless otherwise stated).

A1--0 to 2 inches (0 to 5 centimeters); grayish brown (10YR = 5/2)=20 gravelly loam, very dark grayish brown (10YR 3/2) moist; weak medium = platy=20 structure; soft, very friable, nonsticky, nonplastic; many fine roots; = many very=20 fine pores, high in organic matter; slightly acid (pH 6.4); abrupt = smooth=20 boundary. (1/4 to 2 inches thick).

A2--2 to 7 inches (5 to 18 centimeters); brown (10YR 5/3) = gravelly=20 loam, dark brown (10YR 3/3) moist; massive; hard, friable, slightly = sticky,=20 slightly plastic; many fine and medium roots; many fine pores; slightly = acid (pH=20 6.2); clear wavy boundary (4 to 6 inches thick).

A3--7 to 15 inches (18 to 38 centimeters); brown (10YR 5/3) = gravelly=20 heavy loam; dark brown (10YR 3/3) moist; massive; hard, friable, = slightly sticky=20 and nonplastic; many very fine and fine roots; many fine and medium = tubular=20 pores; few thin clay films in pores; moderately acid (pH 6.0); abrupt = wavy=20 boundary. (3 to 10 inches thick).

Bt1--15 to 26 inches (38 to 66 centimeters); brown (7.5YR 5/4) = gravelly clay, brown (7.5YR 4/3) moist; moderate and strong coarse = prismatic=20 structure; very hard, very firm, plastic and sticky, few large roots, = many fine=20 and very fine interstitial pores; continuous thick clay films in pores = and on=20 ped faces; moderately acid (pH 6.0) gradual wavy boundary (4 to 15 = inches=20 thick).

Bt2--26 to 60 inches (66 to 152 centimeters); mixed light = yellowish=20 brown (10YR 6/4) and brown (7.5YR 5/4) stratified very gravelly sandy = clay and=20 clay, yellowish brown (10YR 5/4) and reddish brown (5YR 4/4) moist; = massive,=20 very hard, very firm, sticky and plastic; very few large roots; many = very fine=20 interstitial pores; many thick clay films in bridges between mineral = grains;=20 slightly acid (pH 6.3)

TYPE LOCATION: Glenn County, California; NW 1/4 of Sec. 18, = T.22N.,=20 R.4W., 9 miles west Orland.

RANGE IN CHARACTERISTICS: The thickness of the solum is 35 to = 60=20 inches. The mean annual soil temperature is about 62 to 65 degrees F. = and=20 usually is not below 47 degrees F. at any time. The soil between depths = of 4 to=20 12 inches is usually dry all of the time from May until late October or = early=20 November and is moist in some or all parts all the rest of the year. = Rock=20 fragments range from 15 to 35 percent by volume in the A and Bt1 = horizons to=20 over 50 percent in the Bt2 horizon. Soil reaction is slightly acid to = neutral in=20 the A and Bt1 horizons and slightly acid to mildly alkaline in = underlying=20 horizons.

The A horizon is dark grayish brown, grayish brown and yellowish = brown with=20 hues of 10YR and 7.5YR. Moist color values are 3. The upper 1/2 to 2 = inches has=20 weak platy structure and the rest of the horizon is massive and hard = when dry.=20 The texture is gravelly loam, gravelly sandy loam and gravelly clay = loam.

The Bt1 horizon is yellowish brown, brown and strong brown with hues = of 10YR=20 and 7.5YR. The texture is gravelly clay and sandy clay.

The Bt2 horizon has mixed yellowish brown, brown and reddish brown = colors.=20 The sediments are stratified and the texture includes very gravelly or = cobbly=20 clay, gravelly clay or sandy clay loam.

COMPETING SERIES: These are the Corning, Hillgate<= /A>, Kimball, Milpitas<= /A>, Positas, and Tierra = series.=20 Corning and Hillgate soils have moist values of 4 or more in the A = horizon and=20 Corning soils are medium or strongly acid in their Bt horizons. Kimball = soils=20 have hues of 5YR in the upper part of the B2t horizon. Milpitas, Positas = and=20 Tierra soils have A2 horizons. Tierra soils have B2t horizons that are = dark=20 grayish brown or very dark grayish brown in the upper part.

GEOGRAPHIC SETTING: Newville soils are on rolling to steep = dissected=20 terraces at elevations of 300 to 2,000 feet. Slopes are 3 to 65 percent. = They=20 formed in gravelly alluvium from sedimentary rock. The climate is = subhumid=20 mesothermal with warm dry summers and moist cool winters. Mean annual=20 precipitation is 15 to 25 inches. Average January temperature is 42 to = 44=20 degrees F.; average July temperature is 70 to 75 degrees F.; mean annual = temperature is 60 to 63 degrees F. The frost-free season is 250 to 280 = days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Corning and the=20 Dibble = and Millsap soils.=20 Dibble and Millsap soils are underlain by siltstone and sandstone at = depths of=20 less than 40 inches.

DRAINAGE AND PERMEABILITY: Well drained; medium to rapid = runoff; slow=20 permeability.

USE AND VEGETATION: Grazing and some dry farmed grain. The = vegetation=20 is annual grasses, forbs, blue oak and scattered shrubs.

DISTRIBUTION AND EXTENT: Along the lower foothills of the west = side of=20 Sacramento Valley, California. The soils are moderately extensive.

MLRA OFFICE RESPONSIBLE: Davis, California

SERIES ESTABLISHED: Glenn County, California, 1957. The name = is from=20 the town of Newville, California.

REMARKS: The Newville series would have been classified in the = Noncalcic Brown group.

OSED scanned by SSQA. Last revised by state on 1/74.
Fixed depths = on Bt3=20 horizon, updated horizonation, rewrote opening paragraph added slope = range,=20 updated parent material. (11-2004; KP)

National Cooperative Soil Survey
U.S.A.