IDENTIFIERS

Current Taxon Name (Soil Name): Tollflat

OSD

Series Extent

User Site ID: S05SD081-003

User Pedon ID: S05SD081-003

Vegetation Plot ID: S05SD081-003

Lab Information:

Certified Lab Pedon Description - no

Lab Pedon # - 06N0424

NCSS Pedon Lab Data NASIS Record ID - 18625

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: 44.3424444

Std. Longitude: -104.0047778

Datum: WGS84

Township: 4N

Range: 1E

Section: 4

PLSS Details: About 950' south and 1,700' east of the NW corner of section

Location Description: About 15 miles SW of Spearfish, SD, near parking area off of FS road 134.

Map Unit: 20C—Citadel-Larkson complex, 2 to 12 percent slopes

Non-MLRA Soil Survey Area: SD081—Lawrence County, South Dakota

PEDON

Describers Name: Jim Westerman, CJ Heidt

Current Taxonomic Class: Clayey over fragmental, aniso, smectitic, superactive, frigid Vertic Glossudalfs

Current Taxon Kind: series

Pedon Purpose: full pedon description

Pedon Record Orgin: NASIS

Sampled As Information:

Soil Name - Tollflat

Taxonomic Class - Clayey over fragmental, aniso, smectitic, superactive, frigid Vertic Glossudalfs

PSC - 18 to 68 cm.

Classificaton Date - 8/4/2005

Soil Taxonomic Edition - ninth edition

Moisture Class - udic

Moisture SUBClass - typic

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Landform: plateau

Geomorphic Component Mountains: mountaintop

Hill Slope Profile: summit

Slope Position: upper third

Slope Complexity: simple

Slope Shape Across: linear

Slope Shape Down: linear

Runoff: medium

Drainage Class: well

Flooding: none flooding

Ponding: none ponding

Bedrock: moderately coherent moderate weathered sandstone, calcareous at 184cm with 45 to <100

Geology: Minnelusa Sandstone formation of the Sedimentary group.

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 8/4/2005 (actual site observation date)

Air Photo ID: 33

Surface Cover Properties:

Site Obs. Cover Kind 1 - tree cover

Site Obs. Cover Kind 2 - intermixed conifers and hardwoods

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Current Weather - sunny

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
PHPR3 PIPO POA POTR5 SYOC	Phleum pratense Pinus ponderosa Poa Populus tremuloides Symphoricarpos occidentalis	timothy ponderosa pine bluegrass quaking aspen western snowberry	— — — — —	— — — — —	— — — — —

Pedon Restrictions
Kind	Hardness	Restriction Depth L-H	Restriction Thickness L-RV-H
		cm
strongly contrasting textural stratification strongly contrasting textural stratification bedrock, paralithic	strongly coherent strongly coherent strongly coherent	49 - 73 97 - 134 184 - 200	- 24 - - 37 - - 16 -

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
argillic horizon	18—134	—116—

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
6.5	—	—	1853	—	205	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Oe—0 to 2 centimeters (0.0 to 0.8 inches); moderately decomposed plant material; fragments.; dry when described; observed in pit, large or quarry

A—2 to 5 centimeters (0.8 to 2.0 inches); black (7.5YR 2.5/1) interior, brown (7.5YR 4/2) interior, dry; loam; weak medium platy parts to strong fine granular, and weak medium platy parts to moderate medium granular structure; soft, very friable, nonsticky, nonplastic; moderately rapid permeability; low excavation difficulty; 6.0 very fine roots throughout and 2.0 medium roots throughout; fragments; noneffervescent, by hcl, unspecified; abrupt smooth boundary. Lab sample # 06N01628; slightly dry when described; observed in pit, large or quarry

E—5 to 18 centimeters (2.0 to 7.1 inches); brown (7.5YR 4/3) interior, light brown (7.5YR 6/3) interior, dry; loam; strong medium platy parts to moderate fine granular structure; soft, very friable, nonsticky, nonplastic; moderately rapid permeability; low excavation difficulty; 4.0 very fine roots throughout and 1.0 medium roots throughout; 5.0 very fine high-continuity tubular pores; 3 percent by volume nonflat subangular very strongly coherent cemented 20-45-75 millimeter sandstone, unspecified fragments; noneffervescent, by hcl, unspecified; clear smooth boundary. Lab sample # 06N01629; slightly dry when described; observed in pit, large or quarry

Bt/E—18 to 30 centimeters (7.1 to 11.8 inches); 60 percent reddish brown (2.5YR 4/3) interior and 40 percent brown (7.5YR 4/3) interior, 60 percent reddish brown (2.5YR 5/3) interior and 40 percent light brown (7.5YR 6/3) interior, dry; clay loam, loam; weak coarse platy parts to weak medium subangular blocky, and moderate fine prismatic parts to strong medium subangular blocky, and moderate medium prismatic parts to strong medium subangular blocky structure; hard, friable, slightly sticky, moderately plastic; moderate permeability; low excavation difficulty; 4.0 very fine roots throughout and 2.0 medium roots throughout and 4.0 fine roots throughout and 0.5 coarse roots throughout; 5.0 very fine high-continuity tubular pores; fragments; noneffervescent, by hcl, unspecified; clear wavy boundary. Lab sample # 06N01630; slightly moist when described; observed in pit, large or quarry

Bt1—30 to 49 centimeters (11.8 to 19.3 inches); reddish brown (2.5YR 4/3) interior, reddish brown (2.5YR 5/3) interior, dry; silty clay; strong coarse prismatic parts to strong fine angular blocky, and strong coarse prismatic parts to strong medium angular blocky, and strong medium prismatic parts to strong fine angular blocky, and strong medium prismatic parts to strong medium angular blocky structure; very hard, very firm, moderately sticky, very plastic; slow permeability; moderate excavation difficulty; 1.0 very fine roots throughout and 0.5 medium roots throughout and 1.0 fine roots throughout; 60 percent dark reddish brown (2.5YR 3/4), moist, pressure faces on all faces of peds; 6 percent by volume nonflat subangular very strongly coherent cemented 20-45-75 millimeter sandstone, unspecified fragments; noneffervescent, by hcl, unspecified; abrupt wavy boundary. Lab sample # 06N01631; slightly moist when described; observed in pit, large or quarry. continuous - phpvsfiid 306915; continuous - phpvsfiid 306915

Bt2—49 to 73 centimeters (19.3 to 28.7 inches); reddish brown (2.5YR 4/3) interior, reddish brown (2.5YR 5/3) interior, dry; extremely cobbly silty clay; moderate fine angular blocky, and moderate medium angular blocky structure; very hard, very firm, moderately sticky, very plastic; slow permeability; extremely high excavation difficulty; 1.0 very fine roots throughout and 0.2 medium roots throughout and 1.0 fine roots throughout; 60 percent faint reddish brown (2.5YR 4/3), moist, and light reddish brown (2.5YR 6/3), dry, clay films on rock fragments and 60 percent reddish brown (2.5YR 4/3), moist, and light reddish brown (2.5YR 6/3), dry, pressure faces on all faces of peds; 90 percent by volume flat angular very strongly coherent cemented 150-400-600 millimeter sandstone, unspecified fragments; noneffervescent, by hcl, unspecified; abrupt wavy boundary. Lab sample # 06N01632; slightly moist when described; observed in pit, large or quarry. continuous - phpvsfiid 306916; continuous - phpvsfiid 306917; continuous - phpvsfiid 306916; continuous - phpvsfiid 306917

Btk1—73 to 97 centimeters (28.7 to 38.2 inches); reddish brown (5YR 4/3) interior, reddish brown (5YR 5/3) interior, dry; clay; moderate medium prismatic parts to strong fine angular blocky, and moderate medium prismatic parts to strong medium angular blocky structure; very hard, firm, moderately sticky, moderately plastic; slow permeability; high excavation difficulty; 0.1 very fine roots throughout and 0.2 medium roots throughout and 0.1 fine roots throughout; 60 percent dark reddish brown (2.5YR 3/4), moist, pressure faces on all faces of peds; 1 percent fine distinct irregular extremely weakly coherent cemented pinkish gray (5YR 7/2), dry, carbonate masses with clear boundaries in matrix and 1 percent medium distinct irregular extremely weakly coherent cemented pinkish gray (5YR 7/2), dry, carbonate masses with clear boundaries in matrix; 5 percent by volume nonflat subangular strongly coherent cemented 75-160-250 millimeter sandstone, unspecified fragments and 7 percent by volume nonflat subangular strongly coherent cemented 20-45-75 millimeter sandstone, unspecified fragments; slight effervescence, by hcl, unspecified; gradual wavy boundary. Lab sample # 06N01633; slightly dry when described; observed in pit, large or quarry. continuous - phpvsfiid 306918; continuous - phpvsfiid 306918

Btk2—97 to 134 centimeters (38.2 to 52.8 inches); reddish brown (5YR 4/3) interior, reddish brown (5YR 5/3) interior, dry; very cobbly clay; strong very coarse prismatic parts to moderate fine angular blocky, and strong very coarse prismatic parts to moderate medium angular blocky, and strong coarse prismatic parts to moderate fine angular blocky, and strong coarse prismatic parts to moderate medium angular blocky structure; very hard, very firm, very sticky, very plastic; slow permeability; extremely high excavation difficulty; 0.1 very fine roots throughout and 0.2 medium roots throughout and 0.1 fine roots throughout and 0.5 coarse roots throughout; 60 percent dark reddish brown (2.5YR 3/4), moist, pressure faces on all faces of peds; 10 percent coarse prominent irregular weakly coherent cemented pinkish gray (5YR 7/2), dry, and white (5YR 8/1), dry, carbonate masses with clear boundaries in matrix and 10 percent medium prominent irregular weakly coherent cemented pinkish gray (5YR 7/2), dry, and white (5YR 8/1), dry, carbonate masses with clear boundaries in matrix; 4 percent by volume nonflat subangular strongly coherent cemented 20-45-75 millimeter sandstone, unspecified fragments and 36 percent by volume nonflat subangular very strongly coherent cemented 75-160-250 millimeter sandstone, unspecified fragments; slight effervescence, by hcl, unspecified; clear wavy boundary. Lab sample # 06N01634; slightly dry when described; observed in pit, large or quarry. continuous - phpvsfiid 306919; continuous - phpvsfiid 306919

Bk—134 to 184 centimeters (52.8 to 72.4 inches); reddish brown (5YR 4/3) interior, reddish brown (5YR 5/3) interior, dry; loam; moderate fine subangular blocky, and moderate medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderate permeability; high excavation difficulty; 0.1 very fine roots throughout and 0.1 fine roots throughout; 5 percent fine prominent irregular weakly coherent cemented pinkish gray (5YR 7/2), dry, and white (5YR 8/1), dry, carbonate masses with clear boundaries in matrix and 5 percent medium prominent irregular weakly coherent cemented white (5YR 8/1), dry, and pinkish gray (5YR 7/2), dry, carbonate masses with clear boundaries in matrix; 10 percent by volume nonflat subrounded strongly coherent cemented 20-45-75 millimeter sandstone, unspecified fragments; slight effervescence, by hcl, unspecified; clear wavy boundary. Lab sample # 06N01635; slightly dry when described; observed in pit, large or quarry

Cr—184 to 200 centimeters (72.4 to 78.7 inches); 50 percent brown (7.5YR 4/3) interior and 50 percent grayish brown (10YR 5/2) interior, 50 percent brown (7.5YR 5/3) interior and 50 percent light brownish gray (10YR 6/2) interior, dry; bedrock; massive; slightly hard, very friable, very weakly coherent by silica and carbonates, nonsticky, nonplastic; nonfluid; moderate excavation difficulty; fragments; very slight effervescence, by hcl, unspecified.; slightly dry when described; observed in pit, large or quarry