IDENTIFIERS

Current Taxon Name (Soil Name): Delassus

OSD

Series Extent

User Site ID: 1992MO123006M

User Pedon ID: 1992MO123006M

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - MCL

Lab Pedon # - M9212306

NCSS Pedon Lab Data NASIS Record ID - 27021

Print Date: 11/21/2024

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: 37.6002235

Std. Longitude: -90.2081909

Datum: WGS84

Township: T34N

Range: R7E

Section: 36

PLSS Details: 1050 feet N and 2000 feet W of the SE corner

Location Description: 1050 ft. N. and 2000 ft. W of SE corner of sec. 36, T. 34 N., R. 7 E.

Map Unit: 77002—Delassus silt loam, 3 to 8 percent slopes36C—Delassus silt loam, 2 to 5 percent slopes

State: Missouri

County: MO123—Madison

MLRA: 116A—Ozark Highland

Non-MLRA Soil Survey Area: MO123—Madison County, Missouri

7.5 Minute USGS Quad: 37090-E2—Higdon, Missouri

PEDON

Describers Name: KEB, CGM, MLC,

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

Current Taxon Kind: taxadjunct

Pedon Type: within range of map unit

Pedon Purpose: laboratory sampling site

Pedon Record Orgin: Converted from PDP 3.x

Correlated Information:

Soil Name - Delassus

PSC - 20 to 70 cm.

Classificaton Date - 1/31/2012

Moisture Class - udic

Sampled As Information:

Soil Name - Delassus

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

Taxon Kind - series

PSC - 23 to 73 cm.

Classificaton Date - 6/5/1992

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: loess over residuum

Landscape: mountains

Landform: ridge

Runoff: medium

Drainage Class: moderately well

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 6/5/1992 (actual site observation date)

Air Photo ID: D-2

Surface Cover Properties:

Site Obs. Cover Kind 1 - tree cover

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Site Erosion Accelerated: water erosion

Pedon Restrictions
Kind	Hardness	Restriction Depth L-H	Restriction Thickness L-RV-H
		cm
fragipan bedrock, lithic	— —	92 - 110 110 -	— —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon fragipan lithic contact	3—20 20—89 92—110 110—	—- —- —- —-

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
3	—	—	326	—	70	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Oi—0 to 3 centimeters (0.0 to 1.2 inches); slightly decomposed plant material; fragments.

A—3 to 8 centimeters (1.2 to 3.1 inches); dark brown (10YR 3/3), brown (10YR 5/3), dry; silt; moderate very fine granular structure; very friable; 10.0 fine and medium roots; fragments; strongly acid, pH 5.2, hellige-truog; abrupt wavy boundary. Lab sample # MU013640

E—8 to 23 centimeters (3.1 to 9.1 inches); brown (10YR 5/3), light yellowish brown (10YR 6/4), dry; silt loam; moderate very fine and fine subangular blocky structure; friable; 10.0 fine and medium roots and 0.5 coarse roots; fragments; extremely acid, pH 4.4, hellige-truog; clear wavy boundary. Lab sample # MU013641

Bt1—23 to 41 centimeters (9.1 to 16.1 inches); brown (7.5YR 5/4) silty clay loam; moderate very fine and fine subangular blocky structure; friable; 10.0 medium roots and 3.0 fine to coarse roots; 75 percent distinct clay films; fragments; very strongly acid, pH 4.7, hellige-truog; abrupt wavy boundary. Lab sample # MU013642

Bt2—41 to 54 centimeters (16.1 to 21.3 inches); brown (7.5YR 5/4) silty clay loam; moderate very fine and fine subangular blocky structure; firm; 3.0 fine and medium roots; 75 percent distinct clay films; fragments; very strongly acid, pH 4.6, hellige-truog; clear wavy boundary. Lab sample # MU013643

Bt3—54 to 74 centimeters (21.3 to 29.1 inches); yellowish brown (10YR 5/4) silty clay loam; 10 percent strong brown (7.5YR 4/6) medium prominent mottles; moderate very fine subangular blocky structure; firm; 0.5 very fine and fine roots; 35 percent distinct clay films; 10 percent fine and medium noncoherent cemented light brownish gray (10YR 6/2) iron depletions; fragments; very strongly acid, pH 4.5, hellige-truog; clear wavy boundary. Lab sample # MU013644

2Bt4—74 to 92 centimeters (29.1 to 36.2 inches); grayish brown (10YR 5/2) silt loam; 10 percent strong brown (7.5YR 4/6) medium prominent and 10 percent pale brown (10YR 6/3) medium faint mottles; weak thick platy parts to moderate fine subangular blocky structure; firm; 3.0 very fine and fine roots and 0.3 medium roots; prominent clay films on horizontal faces of peds; 10 percent fine and medium noncoherent cemented light brownish gray (10YR 6/2) iron depletions; 2 percent by volume 75-162-250 millimeter unspecified fragments; extremely acid, pH 4.4, hellige-truog; abrupt wavy boundary. Lab sample # MU013645

2Btx—92 to 110 centimeters (36.2 to 43.3 inches); yellowish brown (10YR 5/4) cobbly silt loam; moderate coarse prismatic parts to weak coarse subangular blocky structure; extremely firm*; brittle; 10 percent coarse noncoherent cemented light brownish gray (10YR 6/2) iron depletions and 10 percent very coarse and extremely coarse noncoherent cemented grayish brown (10YR 5/2) iron depletions; 16 percent by volume 75-162-250 millimeter unspecified fragments; 90 BT; extremely acid, pH 4.3, hellige-truog; abrupt smooth boundary. Lab sample # MU013646. Prism faces with gray streaks are 6 inches apart.

3R—110 centimeters (43.3 inches); bedrock; fragments.