LOCATION GOODIN OREstablished Series
TAXONOMIC CLASS: Fine, mixed, superactive, mesic Ultic Haploxeralfs
TYPICAL PEDON: Goodin silty clay loam-on a 12 percent convex-linear south-facing slope planted to Christmas trees at an elevation of 449 feet. (Colors are for moist soil unless otherwise noted)
A1--0 to 3 inches; dark yellowish brown (10YR 3/4) silty clay loam, yellowish brown (10YR 5/4) dry; moderate fine subangular blocky structure; friable, slightly hard, moderately sticky and moderately plastic; many very fine roots, common fine roots, and few medium and coarse roots; many very fine irregular pores, common fine and medium tubular pores, and few coarse tubular pores; 1 percent siltstone paragravel; strongly acid (pH 5.1); clear smooth boundary. (3 to 6 inches thick)
A2--3 to 9 inches; dark yellowish brown (10YR 3/4) silty clay loam, yellowish brown (10YR 5/4) dry; moderate fine and medium subangular blocky structure; friable, moderately hard, moderately sticky and moderately plastic; many very fine roots, common fine roots, and few medium and coarse roots; many very fine tubular pores, common fine and medium tubular pores, and few coarse tubular pores; 1 percent siltstone paragravel; strongly acid (pH 5.1); abrupt wavy boundary. (4 to 7 inches thick)
Bt1--9 to 16 inches; brown (7.5YR 4/4) silty clay, brown (7.5YR 5/4) dry; moderate medium and coarse subangular blocky structure; friable, hard, moderately sticky and moderately plastic; common very fine and few fine and medium roots; common very fine, fine, and medium tubular pores; many faint clay films on faces of peds and common faint clay films on surfaces along pores; 1 percent siltstone paragravel; strongly acid (pH 5.2); clear wavy boundary. (6 to 13 inches thick)
Bt2--16 to 21 inches; brown (7.5YR 4/4) silty clay, brown (7.5YR 5/4) dry; moderate medium and coarse subangular blocky structure; friable, hard, moderately sticky and moderately plastic; common very fine and few fine and medium roots; common very fine, fine, and medium tubular pores; many distinct clay films on faces of peds and common distinct clay films on surfaces along pores; 3 percent siltstone paragravel; very strongly acid. (pH 4.8); clear wavy boundary. (0 to 14 inches thick)
BCt--21 to 29 inches; strong brown (7.5YR 4/6) very paragravelly clay, strong brown (7.5YR 5/6) dry; weak coarse subangular blocky structure; friable, hard, moderately sticky and moderately plastic; common very fine and few fine and medium roots; common very fine and few fine and medium tubular pores; few distinct clay films on faces of peds, on surfaces along pores, and on pararock fragments; 35 percent siltstone paragravel; very strongly acid (pH 4.7); abrupt wavy boundary. (3 to 10 inches thick)
Cr--29 to 39 inches; moderately cemented siltstone.
TYPE LOCATION: Yamhill County, Oregon; about 2,600 feet west and 1,500 feet north of the SE corner of section 17, T. 2 S., R. 4 W. Willamette Meridian. (Latitude 45 degrees, 23 minutes, 39 seconds N; Longitude 123 degrees, 12 minutes, 19 seconds W. NAD 27) Gaston, Oregon USGS 7.5 minute topographic quadrangle.
RANGE IN CHARACTERISTICS: The mean annual soil temperature ranges from 52 to 55 degrees F. The soil is usually moist but is dry for 45 to 60 consecutive days in all parts between depths of 4 to 12 inches following the summer solstice. The depth to moderately or strongly cemented siltstone or sandstone is 20 to 40 inches. The particle-size control section has 35 to 50 percent clay and 0 to 5 percent paragravel. The pararock fragments are of siltstone origin.
The A1 horizon has hue of 10YR or 7.5YR, value of 3 or 4 moist, 5 or 6 dry, and chroma of 2 to 4 moist and 3 or 4 dry. Texture is silt loam or silty clay loam with 25 to 35 percent clay. It has 0 to 5 percent paragravel. Reaction is strongly acid or moderately acid.
The A2 or AB (when present) horizons have hue of 10YR or 7.5YR, value of 3 or 4 moist, 5 or 6 dry, and chroma of 3 or 4 moist and dry. Texture is silty clay loam with 27 to 40 percent clay. It has 0 to 5 percent paragravel. Reaction is strongly acid or moderately acid.
The Bt horizon has hue of 10YR or 7.5YR, value of 3 or 4 moist, 5 or 6 dry, and chroma of 3 to 6 moist and 4 to 6 dry. Texture is a silty clay loam, silty clay or clay with 35 to 55 percent clay. It has 0 to 5 percent paragravel. Reaction is strongly acid or moderately acid in the upper part and very strongly acid or strongly acid in the lower part.
The BCt horizon has hue of 2.5Y, 10YR, or 7.5YR, value of 4 to 6 moist, 4 to 7 dry, and chroma of 2 to 8 moist and dry. Texture is a silty clay loam, silty clay or clay with 27 to 50 percent clay. It has 15 to 60 percent paragravel. Reaction is very strongly acid or strongly acid.
In pedons that have been significantly influenced by diorite, the Bt and BCt horizons will range to 5YR.
COMPETING SERIES: These are the Cedargrove, Cornutt, Freezener, Greengulch, Jumpoff, Oakland, Rainier, Sweetbriar, and Veneta soils.
Cedargrove soils: greater than 60 inches to bedrock; dry for 60 to 90 consecutive days in summer
Cornutt soils: 40 to 60 inches to a paralithic contact; have a Ca/Mg ratio of 1.0 or less
Freezener soils: greater than 60 inches to bedrock
Greengulch soils: dry in the moisture control section for 60 to 90 consecutive days following the summer solstice; have a Cr horizon that is granodiorite
Jumpoff soils: are 40 to 60 inches to a paralithic contact that is volcanic tuff or breccias
Oakland soils: are dry in the moisture control section for 60 to 90 consecutive days following the summer solstice; have 10 to 25 percent rock fragments in the BCt horizon
Sweetbriar soils: greater than 60 inches to bedrock
Rainier soils: are 40 to 60 inches to a lithic contact
Veneta soils: greater than 60 inches to bedrock
GEOGRAPHIC SETTING: Goodin soils are on ridges and side slopes of hills at elevations of 200 to 900 feet. Slopes range from 2 to 60 percent. The soils formed in residuum and colluvium derived from siltstone and fine-grained sandstone of the Yamhill and Keasey Formations. In some areas, diorite is interbedded between layers of the Yamhill Formation. The climate is characterized by warm, wet winters and hot, dry summers. The mean annual precipitation is 40 to 60 inches. The average January temperature is 39 to 40 degrees F. and the average July temperature is 65 to 67 degrees F. The mean annual temperature is 50 to 54 degrees F. The frost-free season (32 degrees F.) is 160 to 210 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Carlton, Chehalem, Dupee, Hazelair, Melbourne, Panther, and Rickreall soils. Carlton and Chehalem soils are greater than 60 inches to bedrock. They are on lower footslopes, toeslopes, fans, and terraces. Dupee soils are greater than 40 inches to a paralithic contact, have iron depletions with a chroma of 2 or less within 30 inches of the surface and are on concave parts of the hillslope. Hazelair soils are very-fine, have a mollic epipedon and are on linear parts of the hillslope. Melbourne soils are greater than 60 inches to bedrock and are on linear to concave parts of the hillslope. Panther soils are greater than 40 inches to a paralithic contact, have a chroma of 2 and redox concentrations in the lower part of the mollic epipedon and are on concave parts of the hillslope. Rickreall soils are 12 to 20 inches to a paralithic contact and are on convex parts of the hillslope.
DRAINAGE AND PERMEABILITY: Well drained; moderately slow permeability.
USE AND VEGETATION: Goodin soils are used for hay and pasture, grass seed, small grain, forestland, homesites, Christmas trees, wildlife habitat, and recreation. Native vegetation includes Douglas fir, bigleaf maple, Oregon white oak, California hazel, creambush oceanspray, western swordfern, tall Oregongrape, yerba buena, broadleaf starflower, and mountain brome.
DISTRIBUTION AND EXTENT: Northwest Oregon. Goodin soils are on hills along the western margin of the Willamette Valley, Oregon. MLRA 2. The series is of moderate extent
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Benton County, Oregon; 2004. The name is from Goodin Creek in Yamhill County, Oregon.
REMARKS: Diagnostic horizons and features recognize in the pedon include:
Ochric epipedon - from a depth of 0 to 9 inches (A1 and A2 horizons)
Argillic horizon - from a depth of 9 to 29 inches (Bt1, Bt2, and BCt horizons)
Paralithic contact - at a depth of 29 inches
Particle-size control section - from 9 to 29 inches (Bt1, Bt2, and BCt horizons)
ADDITIONAL DATA: Characterization data from a representative pedon with User Pedon ID #s 62OR071004, 62OR071005, 62OR071006, 01OR071002, and 02OR071008