USDA - Soil Conservation Service
Pedon Narrative Description
DATE Sampled: 03/20/1991

Soil Series: PAWCATUCK

Site Identification #: 91MA023041

Map Unit Symbol: 66

Lab Pedon #: 2306602

Soil Survey Area #: 023 MLRA: 144A

County FIPS Code:

County Name: Plymouth

Soil Survey Area Name: PLYMOUTH COUNTY, MASSACHUSETTS

Location Description: Approximately 650 feet southwest of Duxbury Beach at a point 1.6 miles southeast of Powder Point Bridge in the town of Duxbury.

Quadrangle Name:

Latitude: 42 degrees 1 minutes 46.0 seconds N

Longitude: 70 degrees 37 minutes 41.0 seconds W

UTM Zone: UTM Easting: UTM Northing:

Photograph #: 695B

Description Category: Full pedon description

Pedon Category: Typical pedon for series

Slope Characteristics Information
Slope: 0 percent
Aspect:
Horizontal Shape: Plane

Physiography:
Local: Salt Marsh

Water Table Information
Water Table Depth: 1.0 inches
Water Table Kind: Apparent

Flooding Information
Frequency: 2x daily

Moisture Regime: Udic moisture regime

Parent Material: Slightly weathered marine organics and muds.

Described by: P. C. FLETCHER

Notes: Watertable fluctuates with the tides. Vegetation Species - salt grasses.

Oi-- 0 to 5 inches; 30 percent dark brown (7.5YR 3/4) and 70 percent very dark grayish brown (10YR 3/2) and very dark grayish brown (10YR 3/2), crushed, fibric material; massive; friable; common very fine and fine roots throughout; 7.0 percent fiber unrubbed; 50.0 percent fiber rubbed; 6.9 Bromthymol blue; 5.5 pH meter 1:2 calcium chloride; abrupt smooth boundary. dead root remains; 12 calcium chloride - use litmus paper and not pH meter; rubbed color

Oi--11 to 16 inches; 40 percent dark brown (7.5YR 3/4) and 60 percent dark grayish brown (2.5Y 4/2) and dark brown (10YR 3/3), crushed, fibric material; massive; friable; common very fine and fine roots throughout; 80.0 percent fiber unrubbed; 50.0 percent fiber rubbed; 6.2 Bromthymol blue; 5.5 pH meter 1:2 calcium chloride; clear smooth boundary. dead root remains

Oi--16 to 23 inches; 30 percent dark brown (7.5YR 3/4) and 70 percent dark gray (N 4/0) and dark grayish brown (2.5Y 4/2), crushed, fibric material; massive; friable; common very fine and fine roots throughout; 70.0 percent fiber unrubbed; 40.0 percent fiber rubbed; 6.7 Bromthymol blue; 5.5 pH meter 1:2 calcium chloride; clear smooth boundary. dead root remains

Oa--23 to 26 inches; 10 percent dark brown (7.5YR 3/4) and 90 percent dark grayish brown (2.5Y 4/2) and dark gray (N 4/0), crushed, sapric material; massive; friable; common very fine and fine roots throughout; 40.0 percent fiber unrubbed; 5.0 percent fiber rubbed; 6.4 Bromthymol blue; 5.5 pH meter 1:2 calcium chloride; clear smooth boundary. significant amount of mineral (silt) about 60% - weak strength; dead root remains

2Cg1--26 to 31 inches; dark gray (5Y 4/1) silt; massive; friable, slightly sticky and slightly plastic; 6.6 Bromthymol blue; abrupt smooth boundary. some dead roots; no remnants of shells

2Cg2--31 to 37 inches; dark gray (5Y 4/1) loamy sand; single grain; loose; 6.8 Bromthymol blue; gradual smooth boundary. sand decayed roots; no remnants of shells

2Cg3--37 to 72 inches; gray (5Y 5/1) sand; single grain; loose; 6.8 Bromthymol blue. no remnants of shells