IDENTIFIERS

Current Taxon Name (Soil Name): Walkerwells

OSD

Series Extent

User Site ID: 31104-E3-009a-copy

User Pedon ID: S2008-TX109-009a-copy

Transect:

User Transect ID - TX109-419-01

Lab Information:

Certified Lab Pedon Description - yes

Lab Source ID - SSL

Lab Pedon # - 08N0267

NCSS Pedon Lab Data NASIS Record ID - 20141

Print Date: 11/28/2024

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: 31.5325966

Std. Longitude: -104.2418747

Datum: WGS84

Location Description: Culberson County, Texas. From the intersection of US Highway 80 and Texas Highway 54 in Van Horn, 0.65 mile north on Texas Highway 54 to intersection with FM 2185, 48.7 miles east and north on FM 2158 to end of pavement, 11.8 miles north on Smileys Road to intersection with KC Road, 12.7 miles east on Nevill Road to intersection with ranch road, 0.3 mile west on ranch road to intersection, 0.3 mile south on ranch road to intersection, 1.3 miles south on ranch road to intersection, 0.2 mile south on ranch road to intersection, 0.2 mile south on ranch road to dirt tank, then 1200 feet west of tank dam in range.

Country: US—United States

State: Texas

County: TX109—Culberson

MLRA: 42—Southern Desertic Basins, Plains, and Mountains

MLRA Soil Survey Area: SW-MAF—Marfa, Texas

Non-MLRA Soil Survey Area: TX626—Culberson County, Main Part, Texas

7.5 Minute USGS Quad: 31104-E3—Two Mill Draw West, Texas

PEDON

Describers Name: Alan Stahnke, Gary Harris, Jo Parsley, and Rusty Dowell

Current Taxonomic Class: Fine-silty, mixed, superactive, thermic Ustifluventic Haplocambids

Current Taxon Kind: series

Pedon Type: OSD pedon

Pedon Purpose: full pedon description

Pedon Record Orgin: PedonPC

Pedon #: 9

Correlated Information:

Soil Name - Walkerwells (flagged as OSD)

PSC - 25 to 100 cm.

Classificaton Date - 5/16/2016

Classifier - Lynn Loomis

Soil Taxonomic Edition - twelfth edition

Moisture Class - aridic (torric)

Moisture Subclass - ustic

Sampled As Information:

Soil Name - Walkerwells-OSD

Classificaton Date - 1/10/2008

Dynamic Soil Properties:

Pedoderm Loose Cover Indicator - no

Hydric: no

Certification Status: certified

QC Status: level 1

SITE

Parent Material: alluvium

Landscape: karst

Landform: drainageway

Slope Complexity: complex

Slope Shape Across: linear

Slope Shape Down: linear

Runoff: low

Drainage Class: well

Flooding: frequent flooding for very brief periods begining in jul

Geology: Young Alluvial Deposits formation.

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 1/10/2008 (actual site observation date)

Surface Cover Properties:

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Pedon Horizon Lab Results - 1
Horizon	Top Depth	Bottom Depth	Sample ID	Data Collector	Total Clay	CaCO3 Clay	Total Silt	Fine Silt	Co. Silt	Total Sand	Total Sand Method	VC Sand	Co. Sand	Med. Sand	Fine Sand	VF Sand	VF Sand Method	Texture Class - Field Lab	Rubbed Fiber	Unrubbed Fiber	pH H2O
	cm	cm			%	%	%	%	%	%		%	%	%	%	%			%	%
A1 A2 Ab1 Ab2 Ab3 Bwb1 Bwb2 Bkyb Byb	0 15 23 38 50 66 99 127 157	15 23 38 50 66 99 127 157 203	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —

Pedon Horizon Lab Results - 2
Horizon	Top Depth	Bottom Depth	Sample ID	pH CaCl2	pH NaF	pH Ox	Delta pH	LL	PL	PI	Atter. Samp. Cond.	COLE	Pot. Acidity	Ca + Mg - Meh 2	K	Ca + Mg - Sat. Paste	KCl Extract. Acidity	Base Sat. - Meh 2	CEC-7	CEC-8.2
	cm	cm						%	%	%		cm/cm	meq/100g	cmol(+)/kg	cmol(+)/kg	mmol(+)/l	cmol(+)/kg	%	cmol(+)/kg	cmol(+)/kg
A1 A2 Ab1 Ab2 Ab3 Bwb1 Bwb2 Bkyb Byb	0 15 23 38 50 66 99 127 157	15 23 38 50 66 99 127 157 203	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —		— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —

Pedon Horizon Lab Results - 3
Horizon	Top Depth	Bottom Depth	Sample ID	ECEC	Phosphate P	NO3-N	EC	EC Method	EC 1:5 by volume	CaCO3 Equiv.	Equiv. Gypsum	Na	SAR	Gypsum Req.	Humic Color	Fulvic Color	Humic + Fulvic Color	Al	PI	Pyro. Hue	PyrO. Value	Pyro. Chroma
	cm	cm		cmol(+)/kg	mg/kg	mg/kg	dS/m		dS/m	%	%	mmol(+)/l	%	L-pcu/g	L-pcu/g	L-pcu/g	%
A1 A2 Ab1 Ab2 Ab3 Bwb1 Bwb2 Bkyb Byb	0 15 23 38 50 66 99 127 157	15 23 38 50 66 99 127 157 203	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste ec meter, saturated paste	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	0 0 0 0 0 0 0 5 5	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon cambic horizon secondary carbonates gypsic horizon	0—23 23—99 99—158 127—235	—23— —76— —59— —107—

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	—	—	1101	—		—	—	—	—	—	—	—	—	—	—	—	—	—	—

A1—0 to 14 centimeters (0.0 to 5.5 inches); variegated 70 percent light brownish gray (10YR 6/2) and 30 percent very pale brown (10YR 7/3), 70 percent very dark grayish brown (10YR 3/2) and 30 percent light yellowish brown (10YR 6/4), moist; stratified stratified silty clay loam; 66 percent sand; 17 percent silt; 17 percent clay; weak medium subangular blocky, and weak fine subangular blocky structure; soft, friable, noncoherent, slightly sticky, nonplastic; low excavation difficulty; 2.0 medium roots throughout and 2.0 fine roots throughout; common medium moderate-continuity tubular and common fine moderate-continuity tubular pores; fragments; vfsl of field estimated texture class; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.3, pH meter; clear smooth boundary. Lab sample # 08N01692, 08N01693; slightly moist when described; observed in trench

A2—14 to 23 centimeters (5.5 to 9.1 inches); variegated light brownish gray (10YR 6/2), dark grayish brown (10YR 4/2), moist; stratified stratified silty clay loam; 60 percent sand; 22 percent silt; 18 percent clay; strong fine granular, and moderate fine granular, and moderate medium granular structure; soft, friable, noncoherent, slightly sticky, slightly plastic; low excavation difficulty; 2.0 medium roots throughout and 2.0 fine roots throughout; common fine to coarse moderate-continuity tubular and common fine moderate-continuity tubular pores; fragments; vfsl of field estimated texture class; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.1, pH meter; clear smooth boundary. Lab sample # 08N01694, 08N01695; slightly moist when described; observed in trench

Ab1—23 to 39 centimeters (9.1 to 15.4 inches); light brownish gray (10YR 6/2), dark grayish brown (10YR 4/2), moist; silty clay loam; 35 percent sand; 38 percent silt; 27 percent clay; moderate coarse subangular blocky, and moderate medium subangular blocky structure; moderately hard, friable, noncoherent, slightly sticky, slightly plastic; low excavation difficulty; 2.0 medium roots throughout and 2.0 fine roots throughout; common medium moderate-continuity tubular and common fine moderate-continuity tubular pores; fragments; l of field estimated texture class; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.2, pH meter; clear smooth boundary. Lab sample # 08N01696; dry when described; observed in trench

Ab2—39 to 50 centimeters (15.4 to 19.7 inches); light brownish gray (10YR 6/2), very dark grayish brown (10YR 3/2), moist; silty clay loam; 30 percent sand; 37 percent silt; 33 percent clay; strong medium subangular blocky structure; moderately hard, friable, noncoherent, moderately sticky, slightly plastic; low excavation difficulty; 2.0 medium roots throughout and 2.0 fine roots throughout; common medium moderate-continuity tubular and common fine moderate-continuity tubular pores; fragments; cl of field estimated texture class; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.2, pH meter; gradual smooth boundary. Lab sample # 08N01697; dry when described; observed in trench

Ab3—50 to 66 centimeters (19.7 to 26.0 inches); grayish brown (10YR 5/2), very dark grayish brown (10YR 3/2), moist; silty clay loam; 18 percent sand; 49 percent silt; 33 percent clay; strong coarse subangular blocky structure; hard, firm, noncoherent, moderately sticky, slightly plastic; low excavation difficulty; 2.0 medium roots throughout and 2.0 fine roots throughout; common medium moderate-continuity tubular and common fine moderate-continuity tubular pores; fragments; sicl of field estimated texture class; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.0, pH meter; gradual smooth boundary. Lab sample # 08N01698; dry when described; observed in trench

Bwb1—66 to 99 centimeters (26.0 to 39.0 inches); grayish brown (10YR 5/2), very dark grayish brown (10YR 3/2), moist; silty clay loam; 40 percent sand; 43 percent silt; 25 percent clay; strong fine prismatic parts to moderate medium subangular blocky, and strong fine prismatic parts to moderate coarse subangular blocky structure; moderately hard, friable, noncoherent, moderately sticky, moderately plastic; low excavation difficulty; 2.0 medium roots throughout and 2.0 fine roots throughout; common medium moderate-continuity tubular and common fine moderate-continuity tubular pores; fragments; sil of field estimated texture class; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.0, pH meter; clear smooth boundary. Lab sample # 08N01699; dry when described; observed in trench

Bwb2—99 to 128 centimeters (39.0 to 50.4 inches); light yellowish brown (10YR 6/4), dark yellowish brown (10YR 4/4), moist; silty clay; 15 percent sand; 47 percent silt; 38 percent clay; moderate fine prismatic parts to strong fine subangular blocky structure; hard, firm, noncoherent, moderately sticky, moderately plastic; low excavation difficulty; 2.0 medium roots throughout and 2.0 fine roots throughout; common medium moderate-continuity tubular and common fine moderate-continuity tubular pores; 5 percent faint pressure faces on all faces of peds; 3 percent fine prominent spherical noncoherent cemented white (10YR 8/1), dry, carbonate masses with sharp boundaries throughout; fragments; socl of field estimated texture class; violent effervescence, by hcl, 1n; moderately alkaline, pH 7.9, pH meter; clear smooth boundary. Lab sample # 08N016700; dry when described; observed in trench. discontinuous - phpvsfiid 1478881; discontinuous - phpvsfiid 1478881

Bkyb—128 to 158 centimeters (50.4 to 62.2 inches); yellowish brown (10YR 5/4), dark yellowish brown (10YR 4/4), moist; silty clay; 30 percent sand; 23 percent silt; 47 percent clay; moderate fine prismatic parts to strong fine subangular blocky structure; hard, firm, noncoherent, moderately sticky, very plastic; low excavation difficulty; 2.0 medium roots throughout and 2.0 fine roots throughout and 1.0 coarse roots throughout; common medium moderate-continuity tubular and common fine moderate-continuity tubular pores; 15 percent faint pressure faces on all faces of peds; 2 percent fine prominent irregular noncoherent cemented carbonate masses with sharp boundaries throughout and 8 percent fine prominent threadlike noncoherent cemented gypsum masses with sharp boundaries throughout; fragments; c of field estimated texture class; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.0, pH meter; clear smooth boundary. Lab sample # 08N01701; dry when described; observed in trench. continuous - phpvsfiid 1478880; continuous - phpvsfiid 1478880

Byb—158 to 206 centimeters (62.2 to 81.1 inches); dark yellowish brown (10YR 4/4), dark yellowish brown (10YR 3/4), moist; silty clay; 45 percent sand; 27 percent silt; 28 percent clay; strong extremely coarse prismatic parts to weak medium subangular blocky, and strong extremely coarse prismatic parts to weak fine subangular blocky structure; moderately hard, friable, noncoherent, nonsticky, slightly plastic; low excavation difficulty; 2.0 medium roots throughout and 2.0 fine roots throughout and 1.0 coarse roots throughout; common medium moderate-continuity tubular and common fine moderate-continuity tubular pores; 40 percent fine prominent irregular noncoherent cemented gypsum masses with sharp boundaries throughout and 10 percent fine prominent irregular noncoherent cemented gypsum masses with sharp boundaries on vertical faces of peds; fragments; cl of field estimated texture class; strong effervescence, by hcl, 1n; strongly alkaline, pH 8.6, pH meter. Lab sample # 08N01702; slightly moist when described; observed in trench

Byb2—206 to 235 centimeters (81.1 to 92.5 inches); light yellowish brown (10YR 6/4), yellowish brown (10YR 5/4), moist; sandy loam; strong extremely coarse prismatic parts to weak coarse subangular blocky structure; slightly hard, very friable, noncoherent, nonsticky, nonplastic; low excavation difficulty; 2.0 medium roots throughout and 2.0 fine roots throughout and 1.0 coarse roots throughout; 40 percent fine prominent irregular noncoherent cemented gypsum masses with sharp boundaries throughout and 5 percent fine prominent noncoherent cemented gypsum masses with sharp boundaries on vertical faces of peds; fragments; strong effervescence, by hcl, 1n. Lab sample # 08N01703; slightly moist when described;