IDENTIFIERS

Current Taxon Name (Soil Name): Tonti

OSD

Series Extent

User Site ID: 2004MO179002M

User Pedon ID: 2004MO179002M

Lab Information:

Certified Lab Pedon Description - yes

Lab Source ID - MCL

Lab Pedon # - M0417902

NCSS Pedon Lab Data NASIS Record ID - 30452

Print Date: 12/6/2025

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: 37.3110056

Std. Longitude: -91.0915333

Datum: WGS84

Township: T30N

Range: R1W

Section: 7

PLSS Details: NW 1/4 NE 1/4

State: Missouri

County: MO179—Reynolds

MLRA: 116A—Ozark Highland

Non-MLRA Soil Survey Area: MO179—Reynolds County, Missouri

PEDON

Describers Name: J Horton, L.Thompson, K Knelle, D Childress, R Taylor

Current Taxonomic Class: Fine-loamy, mixed, active, mesic Typic Fragiudults

Current Taxon Kind: series

Pedon Type: not classified to current taxon name

Pedon Purpose: research site

Pedon Record Orgin: NASIS

Correlated Information:

Soil Name - Tonti

PSC - 20 to 51 cm.

Classificaton Date - 12/17/2020

Sampled As Information:

Soil Name - Tonti

Taxonomic Class - Fine-loamy, mixed, active, mesic Typic Fragiudults

Taxon Kind - series

PSC - 20 to 51 cm.

Classificaton Date - 4/2/2004

Dynamic Soil Properties:

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: mixed loess over pedisediment over residuum

Landscape: hills

Landform: hill

Geomorphic Component Hills: interfluve

Hill Slope Profile: summit

Slope Complexity: simple

Slope Shape Across: linear

Slope Shape Down: linear

Drainage Class: moderately well

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 8/2/2004 (actual site observation date)

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

Pedon Restrictions
Kind	Hardness	Restriction Depth L-H	Restriction Thickness L-RV-H
		cm
fragipan	strongly coherent	51 - 132	- 81 -

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon fragipan	2—20 20—168 51—132	—20— —148— —81—

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
4	—	—	347.5	—	264	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Oe—0 to 2 centimeters (0.0 to 0.8 inches); moderately decomposed plant material; fragments; abrupt smooth boundary.

Ap—2 to 10 centimeters (0.8 to 3.9 inches); light brownish gray (10YR 6/2) interior silt loam; weak fine granular structure; friable; semideformable; many very fine tubular and many fine tubular pores; 2 percent by volume nonflat subangular indurated 2-?-75 millimeter chert fragments; very strongly acid, pH 5.0; clear smooth boundary. Lab sample # MU026071; moist when described;

E—10 to 20 centimeters (3.9 to 7.9 inches); yellowish brown (10YR 5/4) interior silt loam; weak fine subangular blocky structure; friable; semideformable; common medium roots throughout and many fine roots throughout; many very fine tubular and many fine tubular pores; 2 percent very dark gray (10YR 3/1), moist, organic stains on all faces of peds; 2 percent by volume nonflat subangular indurated 2-?-75 millimeter chert fragments; very strongly acid, pH 4.8; gradual smooth boundary. Lab sample # MU026072; moist when described;

Bt1—20 to 33 centimeters (7.9 to 13.0 inches); strong brown (7.5YR 5/6) interior silt loam; weak fine subangular blocky structure; firm; deformable; few medium roots throughout and common fine roots throughout; many very fine tubular and many fine tubular pores; 5 percent light brownish gray (10YR 6/2), moist, silt coats on all faces of peds and 5 percent distinct brown (7.5YR 5/4), moist, clay films on all faces of peds; 1 percent fine irregular weakly coherent cemented black (10YR 2/1), moist, iron-manganese nodules with clear boundaries on faces of peds; 5 percent by volume nonflat subangular indurated 2-?-75 millimeter chert fragments; very strongly acid, pH 4.8; abrupt smooth boundary. Lab sample # MU026073; moist when described;

Bt2—33 to 51 centimeters (13.0 to 20.1 inches); strong brown (7.5YR 4/6) interior gravelly silty clay loam; weak fine angular blocky structure; firm; deformable; few medium roots throughout and few fine roots throughout; common very fine tubular pores; 1 percent gray (7.5YR 5/1), moist, clay films on all faces of peds and 5 percent weak red (7.5R 4/4), moist, clay films on all faces of peds; 1 percent fine weakly coherent cemented iron-manganese concretions with clear boundaries on faces of peds; 30 percent by volume nonflat subangular indurated 2-?-75 millimeter chert fragments; very strongly acid, pH 4.8; gradual smooth boundary. Lab sample # MU026074; moist when described;

2Btx1—51 to 86 centimeters (20.1 to 33.9 inches); 50 percent light gray (10YR 7/2) interior and light brownish gray (10YR 6/2) interior very gravelly coarse sandy loam; weak fine angular blocky structure; very firm; brittle; few medium roots in cracks and few fine roots in cracks; common fine tubular pores; 5 percent distinct brown (7.5YR 4/4), moist, clay films on all faces of peds and 5 percent distinct gray (7.5YR 5/1), moist, clay films on all faces of peds; 15 percent by volume nonflat subangular indurated 75-?-250 millimeter chert fragments and 35 percent by volume nonflat subangular indurated 2-?-75 millimeter chert fragments; very strongly acid, pH 4.8; clear smooth boundary. Lab sample # MU026075; moist when described;

2Btx2—86 to 132 centimeters (33.9 to 52.0 inches); 60 percent gray (10YR 6/1) interior and 20 percent strong brown (7.5YR 5/8) interior and 20 percent yellowish red (5YR 4/6) interior very gravelly clay; weak medium angular blocky structure; very firm; brittle; few fine roots in cracks; common very fine tubular pores; 5 percent distinct brown (7.5YR 5/4), moist, clay films on all faces of peds; 5 percent by volume nonflat subangular indurated 75-?-250 millimeter chert fragments and 35 percent by volume nonflat subangular indurated 2-?-75 millimeter chert fragments; very strongly acid, pH 4.6; clear smooth boundary. Lab sample # MU026076; moist when described;

3Bt3—132 to 152 centimeters (52.0 to 59.8 inches); 30 percent brownish yellow (10YR 6/6) interior and 25 percent brown (7.5YR 5/4) interior and 25 percent red (2.5YR 4/8) interior and 20 percent red (2.5YR 4/6) interior very gravelly clay; weak medium angular blocky structure; very firm; deformable; few very fine tubular pores; 3 percent distinct brownish yellow (10YR 6/6), moist, clay films on all faces of peds and 3 percent distinct red (2.5YR 4/6), moist, clay films on all faces of peds and 3 percent distinct red (2.5YR 4/8), moist, clay films on all faces of peds and 3 percent distinct brown (7.5YR 5/4), moist, clay films on all faces of peds; 5 percent by volume nonflat subangular indurated 75-?-250 millimeter chert fragments and 40 percent by volume nonflat subangular indurated 2-?-75 millimeter chert fragments; very strongly acid, pH 4.5. Lab sample # MU026077; moist when described;

3Bt4—152 to 168 centimeters (59.8 to 66.1 inches); 30 percent brownish yellow (10YR 6/6) interior and 30 percent yellow (10YR 7/6) interior and 20 percent red (2.5YR 4/6) interior and 15 percent strong brown (7.5YR 5/6) interior and 5 percent white (10YR 8/1) interior very gravelly clay loam; weak medium angular blocky structure; very firm; deformable; few very fine tubular pores; 3 percent distinct strong brown (7.5YR 5/6), moist, clay films on all faces of peds and 3 percent faint red (2.5YR 4/6), moist, clay films on all faces of peds; 40 percent by volume nonflat subangular indurated 2-?-75 millimeter chert fragments; extremely acid, pH 4.4. Lab sample # MU026078; moist when described;