IDENTIFIERS

Current Taxon Name (Soil Name): Stamford

OSD

Series Extent

User Site ID: S1981TX169002

User Pedon ID: S1981TX169002

Lab Information:

Certified Lab Pedon Description - yes

Lab Source ID - KSSL

Lab Pedon # - 81P0469

NCSS Pedon Lab Data NASIS Record ID - 49313

Print Date: 11/24/2024

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: 33.1347222

Std. Longitude: -101.1838889

Datum: WGS84

Location Description: Garza County, Texas; From the intersection of US Hwy 84 and 380 in Post, 8.3 miles SE on US Hwy 84, then 5.85 miles North and East on a ranch road, then 1200 feet southeast on a trail in rangeland. (13 km SE from the intersection of US Hwy 84 and 380 in Post 9.4 km N and E on ranch Rd. 73 meters SE in rangeland.)

State: Texas

County: TX169—Garza

MLRA: 78B—Central Rolling Red Plains, Western Part

Non-MLRA Soil Survey Area: TX169—Garza County, Texas

7.5 Minute USGS Quad: 33101-B2—Justiceburg NW, Texas

PEDON

Describers Name: Wilding Allen Lynn Hallmark Drees Williams Holland

Current Taxonomic Class: Fine, smectitic, thermic Sodic Haplusterts

Current Taxon Kind: taxadjunct

Pedon Type: taxadjunct to the series

Pedon Purpose: full pedon description

Pedon Record Orgin: Converted from SSL-CMS data

Pedon #: 2

Correlated Information:

Soil Name - Stamford

PSC - 25 to 100 cm.

Classificaton Date - 5/29/2015

Classifier - Carlos J. Villarreal

Soil Taxonomic Edition - twelfth edition

Moisture Class - ustic

Moisture Subclass - aridic (torric)

Sampled As Information:

Soil Name - Stamford

Taxonomic Class - Fine, montmorillonitic, thermic Typic Chromusterts

Taxon Kind - series

Classificaton Date - 6/1/1981

Moisture Class - ustic

Dynamic Soil Properties:

Pedoderm Loose Cover Indicator - no

Hydric: no

Certification Status: certified

QC Status: level 1

QA Status: level 1

SITE

Parent Material: calcareous clayey slope alluvium over residuum weathered from claystone

Landscape: Dissected plains

Landform: pediment

Geomorphic Component Hills: base slope

Drainage Class: well

Bedrock: noncoherent claystone at 151cm

Geology: Triassic System, Dockum Group group .

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 6/1/1981 (actual site observation date)

Surface Cover Properties:

Site Obs. Cover Kind 1 - grass/herbaceous cover

Site Obs. Cover Kind 2 - rangeland, shrubby

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
bedrock, densic	noncoherent	151 - 262	—

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon secondary carbonates slickensides cambic horizon gypsum accumulations densic contact lithologic discontinuity	0—43 17—241 43—134 43—134 151—175 151—262 151—262	—- —- —- —- —- —- —-

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
0.5	—	—	710	—		—	—	—	—	—	—	—	—	—	—	—	—	—	—

A1—0 to 17 centimeters (0.0 to 6.7 inches); reddish brown (5YR 4/4), dark reddish brown (5YR 3/4), moist; silty clay; moderate very fine and fine subangular blocky, and angular blocky structure; very hard, very firm, very sticky, moderately plastic; many (5.5) very fine roots; fragments; strong effervescence; strongly alkaline, pH 8.6; clear wavy boundary. Lab sample # 81P02695

A2—17 to 43 centimeters (6.7 to 16.9 inches); reddish brown (5YR 4/4), dark reddish brown (5YR 3/4), moist; silty clay; moderate very fine and fine angular blocky structure; very hard, very firm, very sticky, moderately plastic; common (2.5) roots; few (0.5) very fine tubular pores; pressure faces on faces of peds; 1 percent very fine carbonate concretions; fragments; strong effervescence; moderately alkaline, pH 8.4; gradual wavy boundary. Lab sample # 81P02696

Bkss1—43 to 66 centimeters (16.9 to 26.0 inches); reddish brown (5YR 4/4), dark reddish brown (5YR 3/4), moist; silty clay; weak fine blocky structure; very hard, very firm, very sticky, moderately plastic; common (2.5) very fine roots; few (0.5) very fine tubular pores; pressure faces on faces of peds and 10 percent slickensides (pedogenic); 1 percent fine and medium carbonate masses and 1 percent fine and medium carbonate concretions; fragments; strong effervescence; moderately alkaline, pH 8.2; gradual wavy boundary. Lab sample # 81P02697

Bkss2—66 to 93 centimeters (26.0 to 36.6 inches); reddish brown (5YR 4/4) silty clay; weak medium angular blocky structure; very hard, very firm, moderately sticky, moderately plastic; common (2.5) very fine roots between peds; few (0.5) very fine tubular pores; pressure faces on faces of peds and 70 percent slickensides (pedogenic); 20 percent very fine and fine carbonate masses between peds; fragments; strong effervescence; moderately alkaline, pH 8.2; abrupt wavy boundary. Lab sample # 81P02698

Bkss3—93 to 134 centimeters (36.6 to 52.8 inches); yellowish red (5YR 5/6), yellowish red (5YR 4/6), moist; silty clay; weak medium angular blocky structure; very hard, very firm, very sticky, moderately plastic; few (0.5) very fine roots; 37 percent slickensides (pedogenic); fragments; strong effervescence; moderately alkaline, pH 8.2; abrupt irregular boundary. Lab sample # 81P02699

BCk—134 to 151 centimeters (52.8 to 59.4 inches); light reddish brown (5YR 6/3), yellowish red (5YR 5/6), moist; loam; weak fine and medium subangular blocky, and angular blocky structure; very hard, very firm, very sticky, moderately plastic; very few (0.5) very fine roots; common (5.0) very fine tubular pores; 3 percent very fine and fine carbonate concretions and 3 percent very fine and fine carbonate masses; 2 percent by volume 2-3-5 millimeter quartzite fragments; strong effervescence; moderately alkaline, pH 8.3; abrupt wavy boundary. Lab sample # 81P02700

2Cd1—151 to 175 centimeters (59.4 to 68.9 inches); light reddish brown (2.5YR 6/4), reddish brown (2.5YR 5/4), moist; silty clay loam, bedrock; massive parts to weak very fine and fine subangular blocky, and angular blocky; extremely hard, extremely firm, noncoherent, moderately sticky, moderately plastic; 1 percent very fine carbonate masses and 1 percent very fine gypsum masses; 2 percent by volume 2-3-5 millimeter quartzite fragments; strong effervescence; strongly alkaline, pH 8.5; clear wavy boundary. Lab sample # 81P02701

2Cd2—175 to 215 centimeters (68.9 to 84.6 inches); brown (10YR 5/3) silty clay loam, bedrock; massive parts to medium and coarse angular blocky; extremely hard, extremely firm, noncoherent, moderately sticky, moderately plastic; 1 percent very fine carbonate concretions; 2 percent by volume 2-3-5 millimeter quartzite fragments; strong effervescence; strongly alkaline, pH 8.7; gradual wavy boundary. Lab sample # 81P02702

2Cd3—215 to 241 centimeters (84.6 to 94.9 inches); yellowish brown (10YR 5/4) silty clay loam, bedrock; massive parts to weak medium and coarse angular blocky; extremely hard, extremely firm, noncoherent, moderately sticky, moderately plastic; 1 percent very fine carbonate masses in cracks and 1 percent very fine gypsum masses in cracks; 2 percent by volume 2-3-5 millimeter quartzite fragments; slight effervescence; strongly alkaline, pH 8.6; gradual wavy boundary. Lab sample # 81P02703

2Cd4—241 to 262 centimeters (94.9 to 103.1 inches); yellowish brown (10YR 5/4) silty clay, bedrock; extremely hard, extremely firm, noncoherent; 2 percent by volume 2-3-5 millimeter quartzite fragments; slight effervescence; strongly alkaline, pH 8.7; abrupt boundary. Lab sample # 81P02704

3R—262 centimeters (103.1 inches); bedrock; fragments.