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USDA - Soil Conservation Service Soil Series: SACO Map Unit Name: Saco mucky silt loam, 0 to 3 percent slopes Site Identification #: 92MA023012 Map Unit Symbol: 5A Note ID: Yield ID: Laboratory Information Lab Pedon #: 2300503 Source Lab Id: Location Information Soil Survey Area #: 023 MLRA: 144A County FIPS Code: County Name: Plymouth County, Massachusetts Soil Survey Area Name: Plymouth County, Massachusetts Location Description: Bridgewater Quad, town of Middleboro, 150 feet north of the Nemasket River 150 feet SW of where the Nemasket River joins the Taunton River, 300 feet east of the railroad tracks. Quadrangle Name: Bridgewater Quad Latitude: 41 degrees 56 minutes 5.0 seconds N Longitude: 70 degrees 56 minutes 16.0 seconds W UTM Zone: UTM Easting: UTM Northing: Description Category: Full pedon description Pedon Category: Slope Characteristics Information Elevation: 15.0 feet Physiography: Microrelief: mound , Elevation: 4.0 inches Flooding Information Type of Erosion: water erosion Degree of Erosion: Class 1 Classification: ____ , ____ , ____ , ____ , ____ ____ Moisture Regime: Udic moisture regime Landuse: Wetlands Natural Drainage Class: VPD Parent Material: Weathered alluvium from mixed-igneous-metamorphic & sedimentary Vegetative Information Described by: Jim Turenne, Judy Bartos, Nicky Shirt, Richard Bonner Notes: Weather - sunny, dry, breezy, 70 degrees F., sampled by Judy Bartos, UMass, water table @ 80 cm, seepage at 46 cm.
Oi-- 1 to 0 inches; fibric material; abrupt smooth boundary. Undecomposed sedges & grasses.
Oe-- 0 to 3 inches; dark brown (7.5YR 3/2) and black (10YR 2/1), crushed, partially decomposed organic matter; very friable; common medium roots throughout and common very fine and fine throughout; 5.3 Bromcresol green; clear smooth boundary. 1st color (7.5YR 3/2) is unrubbed; 2nd color is rubbed color.
A-- 3 to 6.5 inches; black (10YR 2/1) mucky silt loam; weak fine granular structure; very friable, nonsticky and nonplastic; common very fine roots throughout and common fine throughout; 5.2 Bromcresol green; gradual smooth boundary.
Cg1--6.5 to 18 inches; dark gray (5Y 4/1) silt loam; common medium and coarse prominent dark olive brown (2.5Y 3/3) and common medium and coarse faint strong brown (7.5YR 5/8) mottles; massive; friable, nonsticky and nonplastic; common very fine roots throughout; 5.2 Bromcresol green; 1 percent rounded mixed gravel; gradual wavy boundary. Mottles are oxidized rhizospheres 1-2mm wide, greater than 5cm long.
Cg2--18 to 27 inches; very dark gray (5Y 3/1) silt loam and fine sand; common medium prominent dark gray (10YR 4/1) mottles; massive; friable, nonsticky and nonplastic; common very fine roots throughout; 5.6 Chlorophenol red; common coarse irregular soft dark masses; clear wavy boundary. Weak hydrogen sulfide odor in Cg2; few pockets of fine sand in Cg2; Cg2 - organic (charcoal) staining on ped faces 7.5YR 2/0 ~ 5% of horizon.
Ab--27 to 40 inches; very dark brown (10YR 2/2) and dark gray (5Y 4/1) mucky fine sand; massive; very friable; 5.6 Chlorophenol red; 1 percent rounded mixed gravel; abrupt smooth boundary. Moderate H2S odor in Ab horizon; few pockets of fine sand 5Y 4/1 in Ab; Ab horizon is an old surface layer - high percentage of fiberous organic matter intermixed with mineral sandy material - need lab data for organic carbon %.
Cg3--40 to 49 inches; dark gray (5Y 4/1) fine sand; single grain; loose; 6.4 Bromthymol blue; 1 percent rounded mixed gravel and 10 percent rounded; abrupt smooth boundary. 10% coarse woody fragments in Cg3 (twig & branch fragments).
Cg4--49 to 72 inches; dark gray (5Y 4/1) very gravelly sand; single grain; loose; 6.7 Bromthymol blue; 25 percent subrounded mixed gravel. Gravel content of lower Cg4 goes as high as 50-60% (25% is average). |
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