IDENTIFIERS

Current Taxon Name (Soil Name): Coulterville

OSD

Series Extent

User Site ID: S1974IL163001

User Pedon ID: S1974IL163005

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - SSL

Lab Pedon # - 40A2797

NCSS Pedon Lab Data NASIS Record ID - 37377

Print Date: 12/4/2024

LOCATION

Location In Web Soil Survey

AOI is roughly a square mile and pedon is marked in the center.

Location in SoilWeb

Location in Google Maps

Std. Latitude: 38.3806076

Std. Longitude: -89.9853668

Datum: WGS84

Township: 2S

Range: 8W

Section: 9

PLSS Details: 84 feet south and 118 feet east of the northwest corner of the NE 1/4 of the NE 1/4

Location Description: About 2 miles south of Smithton.

State: Illinois

County: IL163—St. Clair

Non-MLRA Soil Survey Area: IL163—St. Clair County, Illinois

PEDON

Current Taxonomic Class: Fine-silty, mixed, superactive, mesic Aeric Albaqualfs

Current Taxon Kind: series

Pedon Purpose: full pedon description

Pedon Record Orgin: Converted from PDP 3.x

Pedon #: 1

Correlated Information:

Soil Name - Coulterville

PSC - 28 to 78 cm.

Classificaton Date - 9/18/2008

Moisture Class - aquic

Moisture Subclass - aeric

Sampled As Information:

Soil Name - Darmstadt

Classificaton Date - 8/4/1974

Dynamic Soil Properties:

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Landform: terrace

Runoff: medium

Drainage Class: somewhat poorly

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 8/4/1974 (actual site observation date)

Surface Cover Properties:

Site Obs. Cover Kind 1 - crop cover

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Setting and Climate
Slope	Slope Length USLE	Upslope Length	Elev.	Corr. Elev	Aspect	MAP	REAP	FFD	MAAT	MSAT	MWAT	MAST	MSST	MWST	MFFP	PE Index	Climate Station ID	Climate Station Name	Climate Station Type
%	m				degrees	mm	mm		C						mm
2	—	—	—	—		1016	—	—	11.1	—	—	—	—	—	—	—	—	—	—

Ap—0 to 20 centimeters (0.0 to 7.9 inches); dark grayish brown (10YR 4/2) silt loam; weak thick platy parts to weak very fine granular structure; friable; 1 percent fine black (10YR 2/1) iron-manganese concretions; fragments; neutral, pH 7.0, hellige-truog; abrupt smooth boundary. Lab sample # 40A22078

A2—20 to 28 centimeters (7.9 to 11.0 inches); light brownish gray (10YR 6/2) and grayish brown (10YR 5/2) silt loam; weak thick platy parts to weak fine subangular blocky structure; friable; 21 percent black (10YR 2/1) iron-manganese concretions; fragments; neutral, pH 7.0, hellige-truog; abrupt smooth boundary. Lab sample # 40A22079

B1t—28 to 41 centimeters (11.0 to 16.1 inches); brown (10YR 5/3) silty clay; 3 percent grayish brown (10YR 5/2) medium faint and 3 percent brown (10YR 5/3) medium faint mottles; weak medium prismatic parts to moderate medium angular blocky structure; friable; grayish brown (10YR 5/2), moist, coats on faces of peds; fragments; very strongly acid, pH 4.8, hellige-truog; gradual smooth boundary. Lab sample # 40A22080. discontinuous - phpvsfiid 184258; discontinuous - phpvsfiid 184258

B21t—41 to 53 centimeters (16.1 to 20.9 inches); pale brown (10YR 6/3) silty clay loam; 21 percent grayish brown (10YR 5/2) fine distinct and 21 percent brownish yellow (10YR 6/6) fine distinct and 21 percent yellowish brown (10YR 5/8) fine distinct mottles; moderate medium prismatic parts to strong medium angular blocky structure; firm; gray (10YR 5/1), moist, coats on faces of peds; fragments; moderately acid, pH 5.8, hellige-truog; gradual smooth boundary. Lab sample # 40A22081. discontinuous - phpvsfiid 184259; discontinuous - phpvsfiid 184259

B22t—53 to 69 centimeters (20.9 to 27.2 inches); pale brown (10YR 6/3) and light brownish gray (10YR 6/2) silty clay loam; 21 percent strong brown (7.5YR 5/8) coarse distinct mottles; moderate coarse prismatic structure; firm; gray (10YR 5/1), moist, coats on faces of peds; fragments; moderately acid, pH 5.8, hellige-truog; gradual smooth boundary. Lab sample # 40A22082. discontinuous - phpvsfiid 184260; discontinuous - phpvsfiid 184260

B23t—69 to 89 centimeters (27.2 to 35.0 inches); light brownish gray (10YR 6/2) silty clay loam; 1 percent light yellowish brown (10YR 6/4) medium prominent and 1 percent dark gray (10YR 4/1) medium prominent and 1 percent dark yellowish brown (10YR 4/4) medium prominent mottles; weak coarse prismatic structure; firm; 30 percent very dark gray (10YR 3/1), moist, clay films in root channels and/or pores; 3 percent iron concretions; fragments; neutral, pH 7.0, hellige-truog; clear smooth boundary. Lab sample # 40A22083

B3—89 to 99 centimeters (35.0 to 39.0 inches); light gray (10YR 7/1) silty clay loam; 1 percent yellowish brown (10YR 5/6) coarse distinct mottles; weak coarse prismatic structure; friable; gray (10YR 5/1), moist, coats on faces of peds; fragments; slightly alkaline, pH 7.6, hellige-truog; abrupt smooth boundary. Lab sample # 40A22084. discontinuous - phpvsfiid 184262; discontinuous - phpvsfiid 184262

C1—99 to 112 centimeters (39.0 to 44.1 inches); light gray (10YR 7/1) silt loam; 21 percent yellowish brown (10YR 5/6) coarse distinct and 21 percent yellowish brown (10YR 5/8) coarse distinct mottles; massive; friable; fragments; slightly alkaline, pH 7.6, hellige-truog; abrupt smooth boundary. Lab sample # 40A22085. Several iron bands.

C2—112 to 157 centimeters (44.1 to 61.8 inches); light gray (10YR 7/1) silt loam; 21 percent yellowish brown (10YR 5/6) coarse distinct and 21 percent yellowish brown (10YR 5/8) coarse distinct mottles; massive; friable; 75 percent black (10YR 2/1), moist, black stains on faces of peds; fragments; moderately alkaline, pH 8.2, hellige-truog; gradual smooth boundary. Lab sample # 40A22086. Many iron bands.

C3—157 to 170 centimeters (61.8 to 66.9 inches); light gray (10YR 7/1) silt loam; 21 percent yellowish brown (10YR 5/6) coarse distinct mottles; massive; friable; fragments; moderately alkaline, pH 8.2, hellige-truog. Lab sample # 40A22087. Many iron bands; few black (10YR 2/1) concretions.