IDENTIFIERS

Current Taxon Name (Soil Name): Clarksdale

OSD

Series Extent

User Site ID: S1989IL169037

User Pedon ID: 89IL169037

Lab Information:

Certified Lab Pedon Description - yes

Lab Source ID - SSL

Lab Pedon # - 89P0753

NCSS Pedon Lab Data NASIS Record ID - 61852

Print Date: 11/23/2024

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: 40.2276300

Std. Longitude: -90.5693700

Datum: WGS84

Township: 3N

Range: 2W

Section: 24

PLSS Details: 1,386 feet E and 132 feet N of the section center

Map Unit: 257A—Clarksdale silt loam, 0 to 2 percent slopes

Country: US—United States

State: Illinois

County: IL169—Schuyler

MLRA: 115—Central Mississippi Valley Wooded Slopes

Regional Office: NC—North Central

MLRA Soil Survey Area: NC-SPI—Springfield, Illinois

Non-MLRA Soil Survey Area: IL169—Schuyler County, Illinois

7.5 Minute USGS Quad: 40090-B5—Rushville North, Illinois

PEDON

Describers Name: Crew

Current Taxonomic Class: Fine, smectitic, mesic Aquollic Hapludalfs

Current Taxon Kind: taxadjunct

Pedon Type: classifies to current taxon name, full description

Pedon Purpose: soil survey inventory

Pedon Record Orgin: Converted from SSL-CMS data

Pedon #: 37

Correlated Information:

Soil Name - Clarksdale

PSC - 48 to 98 cm.

Classificaton Date - 6/15/2007

Soil Taxonomic Edition - twelfth edition

Moisture Class - udic

Moisture Subclass - aquic

Sampled As Information:

Soil Name - Clarksdale

Taxonomic Class - Fine, montmorillonitic, mesic Udollic Endoaqualfs

Taxon Kind - series

Classificaton Date - 8/1/1989

Moisture Class - aquic

Moisture SUBClass - aeric

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: Fine-textured Peoria Loess

Landscape: till plain

Landform: ground moraine

Drainage Class: somewhat poorly

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 8/1/1989 (actual site observation date)

Surface Cover Properties:

Site Obs. Cover Kind 1 - grass/herbaceous cover

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Site Erosion Accelerated: water erosion

Pedon Horizon Lab Results - 1
Horizon	Top Depth	Bottom Depth	Sample ID	Data Collector	Total Clay	CaCO3 Clay	Total Silt	Fine Silt	Co. Silt	Total Sand	Total Sand Method	VC Sand	Co. Sand	Med. Sand	Fine Sand	VF Sand	VF Sand Method	Texture Class - Field Lab	Rubbed Fiber	Unrubbed Fiber	pH H2O
	cm	cm			%	%	%	%	%	%		%	%	%	%	%			%	%
Ap E1 E2 B/E Bt Btg1 Btg2 Cg	0 20 25 36 48 66 97 124	20 25 36 48 66 97 124 152	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —

Pedon Horizon Lab Results - 2
Horizon	Top Depth	Bottom Depth	Sample ID	pH CaCl2	pH NaF	pH Ox	Delta pH	LL	PL	PI	Atter. Samp. Cond.	COLE	Pot. Acidity	Ca + Mg - Meh 2	K	Ca + Mg - Sat. Paste	KCl Extract. Acidity	Base Sat. - Meh 2	CEC-7	CEC-8.2
	cm	cm						%	%	%		cm/cm	meq/100g	cmol(+)/kg	cmol(+)/kg	mmol(+)/l	cmol(+)/kg	%	cmol(+)/kg	cmol(+)/kg
Ap E1 E2 B/E Bt Btg1 Btg2 Cg	0 20 25 36 48 66 97 124	20 25 36 48 66 97 124 152	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —		— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —

Pedon Horizon Lab Results - 3
Horizon	Top Depth	Bottom Depth	Sample ID	ECEC	Phosphate P	NO3-N	EC	EC Method	EC 1:5 by volume	CaCO3 Equiv.	Equiv. Gypsum	Na	SAR	Gypsum Req.	Humic Color	Fulvic Color	Humic + Fulvic Color	Al	PI	Pyro. Hue	PyrO. Value	Pyro. Chroma
	cm	cm		cmol(+)/kg	mg/kg	mg/kg	dS/m		dS/m	%	%	mmol(+)/l	%	L-pcu/g	L-pcu/g	L-pcu/g	%
Ap E1 E2 B/E Bt Btg1 Btg2 Cg	0 20 25 36 48 66 97 124	20 25 36 48 66 97 124 152	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —	— — — — — — — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon	0—48 48—124	—48— —76—

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
1	—	—	201	—	225	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Ap—0 to 20 centimeters (0.0 to 7.9 inches); very dark grayish brown (10YR 3/2), grayish brown (10YR 5/2), dry; silt loam; weak fine granular structure; friable; many (10.0) very fine roots between peds and common (3.0) fine roots between peds; fragments; slightly acid, pH 6.3; abrupt smooth boundary. Lab sample # 89P04351

E1—20 to 25 centimeters (7.9 to 9.8 inches); dark grayish brown (10YR 4/2) silt loam; mottles; weak medium platy parts to weak fine granular structure; friable; common (3.0) very fine roots between peds and few (0.8) fine roots between peds; 10 percent fine distinct spherical very dark brown (7.5YR 2.5/2), moist, iron-manganese concretions with sharp boundaries throughout and 10 percent fine prominent irregular dark yellowish brown (10YR 4/6), moist, masses of oxidized iron with sharp boundaries in matrix and 10 percent prominent cylindrical light gray (10YR 7/2), dry, clay depletions with sharp boundaries on faces of peds; fragments; moderately acid, pH 5.8, lamotte-morgan; clear smooth boundary. Lab sample # 89P04352. common fine iron-manganese concretions concentrations; few fine roots; common very fine roots; common fine distinct 10YR46 mottles

E2—25 to 36 centimeters (9.8 to 14.2 inches); dark grayish brown (10YR 4/2) silt loam; mottles; weak thick platy parts to moderate very fine subangular blocky structure; friable; common (3.0) very fine roots between peds; 10 percent fine distinct spherical very dark brown (7.5YR 2.5/2), moist, iron-manganese concretions with sharp boundaries throughout and 10 percent fine prominent irregular dark yellowish brown (10YR 4/6), moist, masses of oxidized iron with clear boundaries in matrix and 25 percent prominent cylindrical light gray (10YR 7/2), dry, clay depletions with sharp boundaries on faces of peds; fragments; moderately acid, pH 5.8, lamotte-morgan; clear smooth boundary. Lab sample # 89P04353. common fine iron-manganese concretions concentrations; common very fine roots; common fine distinct 10YR46 mottles

B/E—36 to 48 centimeters (14.2 to 18.9 inches); brown (10YR 5/3) silty clay loam; mottles; moderate fine subangular blocky, and moderate medium subangular blocky structure; friable; common (3.0) very fine roots between peds; 10 percent distinct very dark grayish brown (10YR 3/2), moist, organoargillans on all faces of peds and 25 percent distinct dark grayish brown (10YR 4/2), moist, clay films on all faces of peds; 10 percent fine distinct spherical very dark brown (7.5YR 2.5/2), moist, iron-manganese concretions and 10 percent prominent cylindrical light gray (10YR 7/2), dry, clay depletions with sharp boundaries on faces of peds and 10 percent medium faint irregular dark yellowish brown (10YR 4/6), moist, masses of oxidized iron with clear boundaries in cracks; fragments; strongly acid, pH 5.3, lamotte-morgan; clear smooth boundary. Lab sample # 89P04354. common fine iron-manganese concretions concentrations; many coats surface features; common clay films surface features on faces of peds; common very fine roots; common fine distinct 10YR46 mottles; continuous - phpvsfiid 1414219; continuous - phpvsfiid 1414220; continuous - phpvsfiid 1414219; continuous - phpvsfiid 1414220

Bt—48 to 66 centimeters (18.9 to 26.0 inches); brown (10YR 5/3) silty clay; mottles; weak medium prismatic parts to moderate medium subangular blocky structure; firm; common (3.0) very fine roots between peds; 25 percent distinct dark grayish brown (10YR 4/2), moist, clay films on all faces of peds; 10 percent fine distinct spherical very dark brown (7.5YR 2.5/2), moist, iron-manganese concretions and 10 percent fine prominent irregular dark yellowish brown (10YR 4/6), moist, masses of oxidized iron; fragments; strongly acid, pH 5.3, lamotte-morgan; clear smooth boundary. Lab sample # 89P04355. common fine iron-manganese concretions concentrations; common clay films surface features on faces of peds; common very fine roots; common fine distinct 10YR46 mottles; continuous - phpvsfiid 1414221; continuous - phpvsfiid 1414221

Btg1—66 to 97 centimeters (26.0 to 38.2 inches); grayish brown (10YR 5/2) silty clay loam; mottles; weak medium prismatic parts to moderate medium subangular blocky structure; firm; common (3.0) very fine roots between peds; 15 percent prominent very dark gray (10YR 3/1), moist, organoargillans on surfaces along root channels and 15 percent distinct dark grayish brown (10YR 4/2), moist, clay films on all faces of peds; 10 percent fine prominent spherical very dark brown (7.5YR 2.5/2), moist, iron-manganese concretions and 10 percent medium prominent irregular dark yellowish brown (10YR 4/6), moist, masses of oxidized iron; fragments; strongly acid, pH 5.3, lamotte-morgan; clear smooth boundary. Lab sample # 89P04356. common fine iron-manganese concretions concentrations; few clay films surface features on faces of peds; few clay films surface features on faces of peds; common very fine roots; common fine distinct 10YR46 mottles; the pH 's in the Bt and Btg horizons are too acid; continuous - phpvsfiid 1414222; continuous - phpvsfiid 1414223; continuous - phpvsfiid 1414222; continuous - phpvsfiid 1414223

Btg2—97 to 124 centimeters (38.2 to 48.8 inches); grayish brown (10YR 5/2) silty clay loam; and mottles; moderate coarse subangular blocky structure; firm; few (0.8) very fine roots between peds; 15 percent prominent very dark gray (10YR 3/1), moist, organoargillans on surfaces along root channels and 15 percent prominent very dark gray (10YR 3/1), moist, organoargillans on surfaces along pores and 25 percent distinct dark grayish brown (2.5Y 4/2), moist, clay films on vertical faces of peds; 1 percent medium prominent spherical very dark brown (7.5YR 2.5/2), moist, iron-manganese concretions and 25 percent medium prominent irregular yellowish brown (10YR 5/6), moist, and yellowish brown (10YR 5/8), moist, masses of oxidized iron; fragments; neutral, pH 7.0, lamotte-morgan; clear smooth boundary. Lab sample # 89P04357. few fine and medium iron-manganese concretions concentrations; few clay films surface features on faces of peds; few clay films surface features on faces of peds; few very fine roots; many fine distinct 10YR56 mottles; continuous - phpvsfiid 1414224; continuous - phpvsfiid 1414225; continuous - phpvsfiid 1414226; continuous - phpvsfiid 1414224; continuous - phpvsfiid 1414225; continuous - phpvsfiid 1414226

Cg—124 to 152 centimeters (48.8 to 59.8 inches); light brownish gray (10YR 6/2) silty clay loam; and mottles; massive; friable; 15 percent prominent very dark gray (10YR 3/1), moist, organoargillans on surfaces along pores; 1 percent fine prominent spherical very dark brown (7.5YR 2.5/2), moist, iron-manganese concretions and 25 percent medium prominent irregular yellowish brown (10YR 5/6), moist, and yellowish brown (10YR 5/8), moist, masses of oxidized iron; fragments; neutral, pH 7.0, lamotte-morgan; clear smooth boundary. Lab sample # 89P04358. few fine and medium iron-manganese concretions concentrations; few clay films surface features on faces of peds; many fine distinct 10YR56 mottles; continuous - phpvsfiid 1414227; continuous - phpvsfiid 1414227