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S05-RI-009-005A / RI009-2005-005A-NP
Lagoon Bottom; Ninigret Pond, Charlestown, RI
Links:
Pedon Description
Lab Data
Sampling Information
Location Map
The Pishagqua series consists of very deep, subaqueous soils that are permanently submerged in low
energy depositional basins, estuaries and coastal lagoons. Pishagqua soils formed in silty estuarine
deposits greater than 1 meter and often contain sulfidic materials. Slopes range from 0 to 3 percent. Pedon Description:
Ag1--0 to 13 centimeters; black (5Y 2.5/1) interior, silt loam, gray (5Y 6/1) interior, dry; massive;
loose, extremely hard, slightly sticky, nonplastic; moderately fluid; 1 percent flat less than 50millimeter shell fragments; negative reaction to alpha-alpha' dipyridyl; Oyster shell 5 cm diameter
identified in A horizon. Few very fine plant fragments.; gradual; Lab sample # 06N02277.
Cg1--13 to 46 centimeters; dark olive gray (5Y 3/2) interior, silt loam; massive; loose, slightly
sticky, nonplastic; moderately fluid; negative reaction to alpha-alpha' dipyridyl; Few medium and
fine plant fragments - yellowish colored reed/grass.; gradual; Lab sample # 06N02278.
Cg2--46 to 93 centimeters; black (5Y 2.5/1) interior, silt loam, gray (5Y 6/1) interior, dry; massive;
loose, extremely hard, slightly sticky, nonplastic; moderately fluid; negative reaction to alpha-alpha'
dipyridyl; Common medium and fine plant fragments - yellowish colored reed/grass.; gradual; Lab
sample # 06N02279.
Cg3--93 to 119 centimeters; black (5Y 2.5/1) interior, silt loam, gray (5Y 5/1) interior, dry; massive;
very friable, extremely hard, slightly sticky, nonplastic; slightly fluid; negative reaction to alphaalpha' dipyridyl; Few very fine plant fragments.; abrupt; Lab sample # 06N02280.
2Oe--119 to 145 centimeters; very pale brown (10YR 8/2) pyrophosphate extract and black (10YR
2/1) oxidized and very dark brown (10YR 2/2) interior, mucky peat, very dark gray (10YR 3/1)
interior, dry; 72 percent fiber, 24 percent rubbed; negative reaction to alpha-alpha' dipyridyl; Small
wedge of black mucky silt loam A horizon at boundary with 3Cg - not described/sampled.; A 1.5
diameter x 6 cm long wood fragment was taken at 135 cm. for identification (AWC branch?).; abrupt
wavy boundary; Lab sample # 06N02281.
3Cg--145 to 157 centimeters; olive gray (5Y 5/2) interior, silt loam, white (5Y 8/1) interior, dry;
massive; friable, hard, nonsticky, nonplastic; nonfluid; 5 percent very coarse prominent irregular
yellowish brown (10YR 5/6), moist, masses of oxidized iron with clear boundaries in matrix;
negative reaction to alpha-alpha' dipyridyl; Lab sample # 06N02282.
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(tape in cm)
Laboratory Data:
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General Information
General Description:
Location Description: Location Map:
Description Date: Describer: Pedon ID: Pedon Notes: Lab Source ID: Lab Pedon #: Soil Name as Described/Sampled: Soil Name as Correlated: Classification(10th edition): Classification (Wassents):
Water Depth (feet):
Primary Earth Cover: Existing Vegetation: Parent Material: Deep fluid marine silts
Ninigret Pond, Charleston, RI - NW corner of
Foster Cove, 280 feet south of US Route 1, 2,777
feet north of the entrance to Foster Cove.
TopoZone - USGS Quonochontaug (RI,MA) Topo
Map
9/2/2005
J. Turenne, M. Bradley
S05-RI-009-005A
Site sampled with a Rossfelder Vibracore, a 4 in
diameter PVC tube was used, 2 cores taken from
location. Samples were air dried and dry color,
consistance, and reaction to alpha alpha dye
performed.
NSSL
06N0551
Lagoon Bottom
Pishagqua
Fine-silty, mixed, superactive, nonacid, mesic
Typic Sulfaquents
Fine-silty, mixed, superactive, nonacid, mesic
Fluvic Sulfiwassents
-3
water cover
none
Lagoon Bottom silty estuarine deposits derived
from igneous, metamorphic and sedimentary rock
over Muck woody organic material over silty loess
derived from igneous, metamorphic and
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sedimentary rock
25 to 100 cm.
Sulfidic materials; Reduced matrix 0-119 cm; 145157 cm.
United States
Rhode Island
WASHINGTON
149B -- Long Island-Cape Cod Coastal Lowland
RI600 -- State of Rhode Island: Bristol, Kent,
Newport, Providence, and Washington Counties
Quonochontaug, Rhode Island
41 degrees 21 minutes 58.00 seconds north
71 degrees 40 minutes 41.00 seconds west
NAD83
19
276000 meters
4582889 meters
Atlantic Lowland
Coastal Plain
Embayed section
Ninigret Pond
Particle Size Control Section: Diagnostic Features: Location Information
Country: State: County: MLRA: Soil Survey Area: Quad Name: Latitude: Longitude: Datum: UTM Zone: UTM Easting: UTM Northing: Physiographic Division: Physiographic Province: Physiographic Section: State Physiographic Area: Local Physiographic Area: Location Map:
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