LOCATION TIZZARD MD
Established Series
GPD
11/2017
TIZZARD SERIES
MLRA(s): 153C, 153D
TAXONOMIC CLASS: Sandy over loamy, aniso, siliceous, subactive, nonacid, mesic Sulfic Fluvaquents
Depth Class: Very deep
Drainage Class: Very poorly drained (permanently submersed)
Permeability: Moderate to very rapid
Index Surface Runoff: Negligible
Parent Material: Barrier island washover sediments overlying loamy paleo-terrestrial tidal marsh deposits
Slope: 0 to 1 percent
Mean Annual Air Temperature: 56 degrees F.
Mean Annual Water Temperature: 57 degrees F.
TAXONOMIC CLASS: Sandy over loamy, aniso, siliceous, subactive, nonacid, mesic Sulfic Fluvaquents
TYPICAL PEDON: Tizzard sand on a smooth 0 percent slope on a barrier flat under 2.2 feet of permanent estuarine water. (Colors are for moist soil.)
A--0 to 3 inches; olive (5Y 4/3) sand; single grain; loose; few fine and very fine roots; 1 percent, by volume shell fragments; moderately alkaline; strongly saline; abrupt smooth boundary. (1 to 6 inches thick)
Cg1--3 to 17 inches; black (N 2/0) sand; few fine faint very dark gray (5Y 3/1) mottles; single grain; loose; moderately alkaline; strongly saline; clear smooth boundary.
Cg2--17 to 31 inches; dark gray (5Y 4/1) sand; few medium distinct very dark gray (N 3/0) mottles; single grain; loose; slightly alkaline; strongly saline; gradual smooth boundary. (Combined thickness of the Cg horizon is 19 to 30 inches.)
2Ab--31 to 36 inches; very dark gray (N 3/0) loam; massive; friable; n-value 0.9, material flows with little difficulty between fingers when squeezed; 20 percent, by volume shell fragments; 10 percent, by volume strong brown (7.5YR 4/6) organic fragments; slightly alkaline; strongly saline; clear smooth boundary. (5 to 15 inches thick)
2C'g3--36 to 41 inches; very dark greenish gray (5GY 3/1) loamy sand; few medium distinct black (N 2/0) mottles; massive; very friable; 5 percent, by volume shell fragments; 2 percent, by volume strong brown (7.5YR 4/6) organic fragments; slightly alkaline; strongly saline; gradual wavy boundary.
2C'g4--41 to 60 inches; gray (5Y 5/1) sand; common medium prominent black (N 2/0) mottles; single grain; loose; 1 percent, by volume shell fragments; 1 percent, by volume light olive brown (2.5Y 5/3) organic fragments; slightly alkaline; strongly saline.
TYPE LOCATION: Worcester County, Maryland; approximately 1,200 feet south of the eastern end of the Verrazano Bridge, 100 feet southeast of Marsh Island, Sinepuxent Bay, in a mixed seagrass meadow; lat. 38 degrees, 13 minutes, 49.83 seconds N. and long. 75 degrees, 9 minutes, 11.42 seconds W.
RANGE IN CHARACTERISTICS:
Depth to Bedrock: Greater than 80 inches
Depth to Seasonal High Water Table: Permanently submersed
Depth to Lithologic Discontinuity: 20 to 40 inches
Shell Fragments: 0 to 30 percent, by volume throughout the profile
Soil Reaction: Slightly alkaline to moderately alkaline throughout the profile
Electrical Conductivity: Greater than 16 mmhos/cm throughout the profile
Salinity: Greater than 25 ppt throughout the profile
RANGE OF INDIVIDUAL HORIZONS:
A horizon:
Color--hue of 10YR to 5Y, value of 3 to 5, and chroma of 1 to 4, or is neutral with value of 3 to 5
Texture (fine-earth fraction)--sand or loamy sand
Cg horizon:
Color--hue of 10YR to 10Y, value of 3 to 6, and chroma of 1 or 2, or is neutral with value of 3 to 6
Texture (fine-earth fraction)--sand or loamy sand
2Ab horizon:
Color--hue of 2.5Y to 10Y, value of 2 to 4, and chroma of 1 or 2, or is neutral with value of 2 to 4
Texture (fine-earth fraction)--loam, sandy loam or loamy sand
2C'g horizon:
Color--hue of 10YR to 10Y, value of 3 to 6, and chroma of 1 or 2, or is neutral with value of 3 to 6
Texture (fine0earth fraction)--sandy loam, loamy sand or sand
COMPETING SERIES: None
GEOGRAPHIC SETTING:
Landscape: Mid-Atlantic Coastal Plain Estuaries
Landform: Barrier flats
Parent Material: Barrier island washover sediments overlying loamy paleo-terrestrial tidal marsh materials
Slope: 0 to 1 percent
Mean Annual Air Temperature: 50 to 57 degrees F.
Mean Annual Water Temperature: 52 to 58 degrees F.
Bathymetry: 0.7 to 4.5 feet below MSL
Water Regime: Tidal, 1.0 to 2.0 feet tidal range
GEOGRAPHICALLY ASSOCIATED SOILS:
Demas soils (tentative)--have a sandy particle-size control section, do not have sulfidic materials, at similar water depths
Whittington soils (tentative)--have a sandy particle-size control section, do not have sulfidic materials, at slightly shallower water depths
Purnell soils--have surface organic layers 8 to 15 inches thick and are not permanently submersed; on adjacent tidal marshes
DRAINAGE AND PERMEABILITY:
Agricultural Drainage Class: Very poorly drained (permanently submersed)
Index Surface Runoff: Negligible
Permeability: Moderately rapid or rapid
USE AND VEGETATION:
Major Uses: Most areas are vegetated and function as estuarine benthic wildlife habitat. Benthic fauna such as tubeworms, clams, juvenile blue crabs, scallops and juvenile finfish are common.
Dominant Vegetation: Native vegetation includes rooted algae, eelgrass (Zostera marina) and widgeon grass (Ruppia maritima). Vegetative cover ranges from 10 to 60 percent.
DISTRIBUTION AND EXTENT: The Mid-Atlantic coastal estuaries of Maryland and Delaware and possibly Virginia. This series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Morgantown, West Virginia
SERIES PROPOSED: Worcester County, Maryland, 1998.
REMARKS: Tizzard soils were formerly included with miscellaneous areas of water. They are distinguished by being permanently covered by estuarine waters that support submersed aquatic vegetation. These soils would classify in the proposed "Subaquic Sulfic" subgroup. Refer to "Subaqueous Soil Survey of Sinepuxent Bay, Maryland;" G.P. Demas, J.H. Brown, and M.C. Rabenhorst; July 1998.
Diagnostic horizons and other diagnostic soil characteristics recognized in this pedon are:
Ochric epipedon (oxidized)--the zone from 0 to 1 inches (A horizon)
Peraquic feature--the zone from 0 to 60 inches is permanently saturated
Sulfidic feature--The zone from 31 to 36 inches contains sulfidic materials (verified by moist incubation)
ADDITIONAL DATA:
Data Map Unit ID: To be developed
National Cooperative Soil Survey
U.S.A.