LOCATION MIMMS                   SC

Established Series
CMO:CDG:JMR
04/2022

MIMMS SERIES

MLRA(s): 133A-Southern Coastal Plain, 153A-Atlantic Coast Flatwoods, 153B-Tidewater Area
TAXONOMIC CLASS: Fine, kaolinitic, acid, thermic Fluvaquentic Endoaquepts
Depth Class: Very deep
Drainage Class (Agricultural): Poorly drained
Internal Free Water Occurrence: Very shallow, persistent
Flooding Frequency and Duration: Frequent or occasional for brief to very long periods
Ponding Frequency and Duration: None
Slowest Saturated Hydraulic Conductivity: Moderately low
Landscape: Lower to upper coastal plain river valley
Landform: Flood plain
Geomorphic Component: Flood-plain step
Parent Material: Alluvium
Slope: 0 to 2 percent
Elevation (type location): 110 feet (33 m)
Mean Annual Air Temperature (type location): 63 degrees F (17.1 C)
Mean Annual Precipitation (type location): 48 inches (1220 mm)

TAXONOMIC CLASS: Fine, kaolinitic, acid, thermic Fluvaquentic Endoaquepts

TYPICAL PEDON: Mimms silty clay, forested. (Colors are for moist soil.)

A--0 to 10 centimeters (about 0 to 4 inches); grayish brown (2.5Y 5/2) silty clay; moderate medium granular structure; very friable; many fine and medium roots; common fine and medium pores; very strongly acid; clear smooth boundary.

Bg1--10 to 76 centimeters (about 4 to 30 inches); light gray (2.5Y 7/1) silty clay loam; weak medium subangular blocky structure; firm; moderately sticky, moderately plastic; few fine roots; common fine pores; common medium prominent brownish yellow (10YR 6/6) masses of oxidized iron; very strongly acid; gradual wavy boundary. (Combined thickness of Bg horizon is 40 to more than 60 inches.)

Bg2--76 to 155 centimeters (about 30 to 61 inches); light gray (2.5Y 7/1) silty clay; weak medium subangular blocky structure; firm; moderately sticky, moderately plastic; few fine roots; common medium prominent reddish yellow (7.5YR 6/8) and common coarse prominent yellowish brown (10YR 5/6) masses of oxidized iron; very strongly acid; gradual smooth boundary.

Bg3--155 to 168 centimeters (about 61 to 66 inches); light gray (2.5Y 7/1) clay loam; weak medium subangular blocky structure; firm; moderately sticky, moderately plastic; common medium distinct pale yellow (2.5Y 7/4) and common fine prominent brownish yellow (10YR 6/8) masses of oxidized iron; very strongly acid; clear smooth boundary.

2Cg--168 to 203 centimeters (about 66 to 80 inches); light gray (2.5Y 7/2) coarse sand; single grain; loose; very strongly acid.

TYPE LOCATION: Sumter County, South Carolina; 0.5 miles north of Lynches River Road (State Highway 341) on Trinity Lane; about 0.6 miles east, 0.35 miles north, and 0.16 miles southeast on field road; and about 880 feet east-northeast of road. Sardis, South Carolina; USGS 7.5 Minute Quadrangle, NAD83. lat. 34 degrees, 02 minutes, 16.00 seconds N. and long. 79 degrees, 59 minutes, 26.00 seconds W.

RANGE IN CHARACTERISTICS:
Depth to Bedrock: Greater than 80 inches
Depth to Seasonal High Water Table: 0 to 12 inches, November to May
Rock Fragment content: 0 to 5 percent by volume
Soil Reaction: Extremely acid to moderately unless limed

RANGE OF INDIVIDUAL HORIZONS:
A horizon or Ap horizon (where present):
Color--hue of 7.5YR to 5Y, value of 2 to 6, chroma of 1 to 6, or is neutral with value of 2 to 7
Texture (fine-earth fraction)--loam, silt loam, silty clay loam, silty clay, clay loam, or clay
Redoximorphic features (where present)--masses of oxidized iron in shades of red, yellow, or brown and iron depletions in shades of brown, yellow, olive, or gray

Bg horizon:
Color--hue of 10YR to 5GY (rarely 5BG), value of 4 to 7, chroma of 1 or 2, or is neutral with value of 4 to 7
Texture (fine-earth fraction)--silty clay loam, clay loam, silty clay, or clay
Clay content: 35 to 59 percent weighted average in the control section
Redoximorphic features (where present)--masses of oxidized iron in shades of red, yellow, or brown and iron depletions in shades of brown, yellow, olive, or gray

Cg horizon (where present):
Color--hue of 10YR to 5GY (rarely 5BG), value of 4 to 7, chroma of 1 or 2, or is neutral with value of 4 to 7
Texture (fine-earth fraction)--sandy clay loam, silty clay loam, clay loam, silty clay, or clay
Clay content: 27 percent or more
Redoximorphic features (where present)--masses of oxidized iron in shades of red, yellow, or brown and iron depletions in shades of brown, yellow, olive, or gray

2Cg horizon:
Color--hue of 10YR to 5GY (rarely 5BG), value of 4 to 7, chroma of 1 or 2, or is neutral with value of 4 to 7
Texture (fine-earth fraction)--variable, ranging from sandy to clayey material
Redoximorphic features (where present)--masses of oxidized iron in shades of red, yellow, or brown and iron depletions in shades of brown, yellow, olive, or gray

COMPETING SERIES:
No known series in same family.

GEOGRAPHIC SETTING:
Landscape: Coastal Plain river valley
Landform: Flood plain
Geomorphic Component: Flood-plain step
Parent Material: Alluvium
Elevation: 3 to 50 meters (about 10 to 165 feet)
Annual Temperature: 14 to 21 degrees C (57 to 70 degrees F)
Annual Precipitation: 1040 to 1400 mm ( about 41 to 55 inches)
Frost Free Period: 202 to 253 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Chastain soils--have mixed mineralogy
Chewacla soils--have dominant chroma of more than 2 in the upper 20 inches of the soil
Mantachie soils--have less than 35 percent clay
Mullers soils--have dominant choma of more than 2 immediately below the surface and dominant chroma of 2 or less in the upper 20 inches of the soil
Riverview soils--have dominant chroma of more than 2 in the upper 20 inches of the soil
Shellbluff soils--have dominant chroma of more than 2 in the upper 20 inches of the soil
Tawcaw soils--have dominant chroma of more than 2 in the upper 20 inches of the soil
Wehadkee soils--have less than 35 percent clay

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage Class (Agricultural): Poorly drained
Internal Free Water Occurrence: Very shallow, persistent
Flooding Frequency and Duration: Frequent or occasional for brief to very long periods Ponding Frequency and Duration: None
Index Surface Runoff: Negligible
Saturated Hydraulic Conductivity: Moderately low (0.42 to 1.4 micrometers per second) in the upper part and moderately low to very high (0.42 to 705 micrometers per second) in the lower part)
Permeability: Slow

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Raleigh, North Carolina.

USE AND VEGETATION:
Major Uses:
Dominant Vegetation: Where cultivated--pasture. Where woodedtupelo, cypress, green ash, cottonwood, sweetgum, water oak, willow oak, and cherry-bark oak.

DISTRIBUTION AND EXTENT:
Distribution: South Carolina
Extent: Small

SERIES PROPOSED: Sumter County, South Carolina; 2009 and established with this correlation.

REMARKS:
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon--the zone from the surface of the soil to 4 inches (A horizon)
Cambic horizon- the zone from 4 inches to a depth of 80 inches
Aquic conditions--the zone from 0 inches to a depth of 80 inches is periodically saturated (endosaturation)

ADDITIONAL DATA:
Laboratory Data: Characterization/Reference data are available from NRCS-Soil Survey Laboratory, Lincoln, NE.: User Pedon ID (08SC085028 and 08SC085031) or Lab Pedon Number (08N0425 and 08N0422) are representative of the Mimms Series.

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National Cooperative Soil Survey
U.S.A.