IDENTIFIERS

Current Taxon Name (Soil Name): Osco

OSD

Series Extent

User Site ID: 1969IL161001

User Pedon ID: 1969IL161001

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - IL SCL

Lab Pedon # - 69IL161001

NCSS Pedon Lab Data NASIS Record ID - 20687

Print Date: 2/17/2025

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: 41.3670334

Std. Longitude: -90.6858102

Datum: WGS84

Township: 16N

Range: 3W

Section: 24

Location Description: 600 feet east to tall concrete stone silo

State: Illinois

County: IL161—Rock Island

MLRA: 108—Illinois and Iowa Deep Loess and Drift

Non-MLRA Soil Survey Area: IL161—Rock Island County, Illinois

PEDON

Describers Name: RTO, ECAR, GOW, RR

Current Taxonomic Class: Fine-silty, mixed, superactive, mesic Pachic Argiudolls

Current Taxon Kind: taxadjunct

Pedon Type: TUD pedon

Pedon Purpose: soil survey inventory

Pedon Record Orgin: PedonPC

Pedon #: 1

Correlated Information:

Soil Name - Osco

PSC - 64 to 114 cm.

Classificaton Date - 7/10/2009

Soil Taxonomic Edition - eleventh edition

Moisture Class - udic

Moisture Subclass - typic

Sampled As Information:

Soil Name - Tama

Classificaton Date - 10/1/1969

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: loess

Landscape: till plain

Landform: knoll

Slope Shape Across: linear

Slope Shape Down: linear

Drainage Class: well

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 10/1/1969 (actual site observation date)

Surface Cover Properties:

Site Obs. Cover Kind 1 - crop cover

Site Obs. Cover Kind 2 - row crop

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
1	—	—	229	—		1025	—	190	13	—	—	—	—	—	—	—	—	—	—

Ap—0 to 23 centimeters (0.0 to 9.1 inches); black (10YR 2/1) silt loam; weak medium granular structure; friable; fragments; slightly acid, pH 6.4; abrupt smooth boundary. Lab sample # IL21797

A—23 to 51 centimeters (9.1 to 20.1 inches); black (10YR 2/1) silty clay loam; moderate medium angular blocky structure; friable; fragments; slightly acid, pH 6.4; clear smooth boundary. Lab sample # IL21798, IL21799. Horizon split for sampling: IL21798 23 to 38 cm, IL21799 38 to 51 cm.

Bt1—51 to 64 centimeters (20.1 to 25.2 inches); brown (10YR 4/3) silty clay loam; weak medium subangular blocky, and weak fine subangular blocky structure; friable; 25 percent very dark gray (10YR 3/1) organoargillans on surfaces along root channels; fragments; moderately acid, pH 5.7; clear smooth boundary. Lab sample # IL21800

Bt2—64 to 79 centimeters (25.2 to 31.1 inches); brown (10YR 4/3) silty clay loam; moderate medium subangular blocky, and moderate fine subangular blocky structure; firm; brown (10YR 4/3) clay films on all faces of peds; fragments; strongly acid, pH 5.5; clear smooth boundary. Lab sample # IL21801

Bt3—79 to 117 centimeters (31.1 to 46.1 inches); brown (10YR 4/3) silty clay loam; weak medium prismatic, and moderate medium subangular blocky structure; firm; brown (10YR 4/3) clay films on all faces of peds and 25 percent grayish brown (10YR 5/2) silt coats on all faces of peds; 10 percent fine distinct dark yellowish brown (10YR 4/4) masses of oxidized iron; fragments; strongly acid, pH 5.5; clear smooth boundary. Lab sample # IL21803, IL21802. Horizon split for sampling: IL21802 79 to 102 cm, IL21803 102 to 117 cm.

Btg—117 to 147 centimeters (46.1 to 57.9 inches); grayish brown (10YR 5/2) silty clay loam; weak coarse subangular blocky structure; firm; brown (10YR 4/3) clay films on vertical faces of peds; 25 percent fine distinct yellowish brown (10YR 5/6) masses of oxidized iron; fragments; moderately acid, pH 5.7; clear smooth boundary. Lab sample # IL21804

Cg1—147 to 193 centimeters (57.9 to 76.0 inches); variegated light brownish gray (10YR 6/2) and yellowish brown (10YR 5/6) silt loam; massive; 25 percent very dark brown (10YR 2/2) organoargillans; fragments; moderately acid, pH 5.8; gradual smooth boundary. Lab sample # IL21805, IL21806, IL21807. Horizon split for sampling: IL21805 147 to 163 cm, IL21806 163 to 178 cm, IL21807 178 to 193 cm.

Cg2—218 to 262 centimeters (85.8 to 103.1 inches); variegated yellowish brown (10YR 5/6) and light brownish gray (10YR 6/2) silt loam; massive; 10 percent very dark brown (10YR 2/2) organoargillans; fragments; neutral, pH 6.7; gradual smooth boundary. Lab sample # IL21809, IL21808. Horizon split for sampling: IL21808 218 to 234 cm, IL21809 246 to 262 cm.

Cg3—269 to 284 centimeters (105.9 to 111.8 inches); yellowish brown (10YR 5/4) silt loam; massive; 10 percent fine distinct grayish brown (10YR 5/2) iron depletions; fragments; slight effervescence; slightly alkaline, pH 7.7; gradual smooth boundary. Lab sample # IL21810

Cg4—315 to 330 centimeters (124.0 to 129.9 inches); yellowish brown (10YR 5/4) silt loam; massive; 10 percent fine distinct grayish brown (10YR 5/2) iron depletions; fragments; slight effervescence; moderately alkaline, pH 7.9; gradual smooth boundary. Lab sample # IL21811

Cg5—363 to 422 centimeters (142.9 to 166.1 inches); brown (10YR 5/3) silt loam; massive; 10 percent medium distinct dark yellowish brown (10YR 4/4) masses of oxidized iron; fragments; slight effervescence; moderately alkaline, pH 7.9; gradual smooth boundary. Lab sample # IL21813, IL21812. Horizon split for sampling: IL21812 363 to 376 cm, IL21813 406 to 422 cm.

Cg6—429 to 445 centimeters (168.9 to 175.2 inches); brown (7.5YR 5/2) silt loam; massive; 1 percent fine distinct yellowish brown (10YR 5/4) masses of oxidized iron; fragments; slight effervescence; moderately alkaline, pH 8.1. Lab sample # IL21814