IDENTIFIERS

Current Taxon Name (Soil Name): McLean

OSD

Series Extent

User Site ID: P1994TX065001

User Pedon ID: P1994TX065001

Vegetation Plot ID: 94TX065009

Lab Information:

Certified Lab Pedon Description - yes

Lab Pedon # - 95P0132

NCSS Pedon Lab Data NASIS Record ID - 67150

Print Date: 6/2/2024

LOCATION

Location Description: From the intersection of State High 207 and U.S. Highway 60 in Panhandle 4.7 miles southwest on U.S. Highway 207; 2.25 miles south on county road; 1 mile south-southeast down a turn row into the playa basin.

State: Texas

County: TX065—Carson

MLRA: 77C—Southern High Plains, Southern Part

PEDON

Describers Name: Gaylon Lane, Mike Risinger, T. Craig Byrd, Wade Hirt, DeWayne Williams, Fred Pringle, Willy Crenwelge, Gerald Crenwelge

Current Taxonomic Class: Fine, montmorillonitic Typic Haplusterts

Current Taxon Kind: series

Pedon Type: TUD pedon

Pedon Purpose: full pedon description

Pedon Record Orgin: Converted from PDP 3.x

Correlated Information:

Soil Name - McLean

Classificaton Date - 12/19/2008

Moisture Class - ustic

Sampled As Information:

Soil Name - Drandall

Classificaton Date - 11/7/1994

Dynamic Soil Properties:

Pedoderm Loose Cover Indicator - no

Hydric: no

Field Measured Properties: 60 percent of B horizon clay content and 60 percent of Percent clay in the control section and 10.16 cm of Height of gilgai and 38.1 cm of Depth to mottles and 0.5 percent of Soil slope(%) and 8 Soil reaction - surface layer

SITE

Landscape: plains

Landform: playa

Microfeature: gilgai

Slope Position: depression on a slope

Drainage Class: poorly

Ponding: occasional ponding for brief periods begining in may

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 11/7/1994 (actual site observation date)

Air Photo ID: 18

Microrelief Elevation: 3

Surface Cover Properties:

Site Obs. Cover Kind 1 - grass/herbaceous cover

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
PASM SOHA	Pascopyrum smithii Sorghum halepense	western wheatgrass Johnsongrass	— —	— —	— —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
mollic epipedon mollic epipedon gilgai slickensides slickensides calcic horizon	— 0—150 0—18 18—203 18— 150—	—150— —- —- —- —- —-

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	—	—	—	—		533	—	—	14.4	—	—	—	—	—	—	—	—	—	—

A1—0 to 10 centimeters (0.0 to 3.9 inches); dark gray (10YR 4/1), very dark gray (10YR 3/1), moist; moderate medium subangular blocky parts to moderate medium granular structure; hard, firm; 3.0 fine to coarse roots throughout; 1 percent fine spherical extremely weakly coherent cemented iron-manganese concretions throughout; fragments; noneffervescent; moderately alkaline, pH 8.0, hellige-truog; clear smooth boundary.

A2—10 to 18 centimeters (3.9 to 7.1 inches); dark gray (10YR 4/1), very dark gray (10YR 3/1), moist; moderate medium subangular blocky structure; very hard, very firm; 3.0 fine to coarse roots throughout; 3.0 fine to coarse vesicular and tubular pores; 1 percent fine spherical iron-manganese concretions throughout; fragments; noneffervescent; moderately alkaline, pH 8.0, hellige-truog; clear smooth boundary.

Bss1—18 to 38 centimeters (7.1 to 15.0 inches); dark gray (10YR 4/1), very dark gray (10YR 3/1), moist; strong coarse and very coarse wedge parts to strong fine and medium angular blocky structure; extremely hard, extremely firm*; 3.0 fine to coarse roots throughout; 3.0 fine to coarse vesicular and tubular pores; 1 percent fine spherical weakly coherent cemented iron-manganese concretions throughout; 1 percent fine irregular weakly coherent cemented carbonate concretions throughout; fragments; noneffervescent; moderately alkaline, pH 8.0, hellige-truog; gradual wavy boundary.

Bss2—38 to 53 centimeters (15.0 to 20.9 inches); dark gray (10YR 4/1), very dark gray (10YR 3/1), moist; 1 percent brown (7.5YR 4/4) fine distinct irregular mottles; strong coarse and very coarse wedge parts to strong fine and medium angular blocky structure; extremely hard, extremely firm*; 3.0 fine to coarse roots throughout; 3.0 fine to coarse vesicular and tubular pores; 1 percent fine irregular weakly coherent cemented carbonate concretions throughout; fragments; noneffervescent; moderately alkaline, pH 8.0, hellige-truog; gradual wavy boundary.

Bss3—53 to 94 centimeters (20.9 to 37.0 inches);, very dark gray (10YR 3/1), moist; 1 percent dark yellowish brown (10YR 4/4) fine distinct irregular mottles; strong coarse and very coarse wedge parts to strong fine and medium angular blocky structure; extremely hard, extremely firm*; 3.0 fine to coarse roots throughout; 3.0 fine to coarse vesicular and tubular pores; 1 percent fine irregular weakly coherent cemented carbonate concretions throughout; fragments; noneffervescent; moderately alkaline, pH 8.0, hellige-truog; gradual wavy boundary.

Bss4—94 to 107 centimeters (37.0 to 42.1 inches); dark grayish brown (2.5Y 4/2), very dark grayish brown (2.5Y 3/2), moist; 1 percent reddish brown (5YR 4/4) fine distinct irregular mottles; strong coarse and very coarse wedge parts to strong fine and medium angular blocky structure; extremely hard, extremely firm*; 3.0 fine to coarse roots throughout; 3.0 fine to coarse vesicular and tubular pores; 1 percent fine irregular weakly coherent cemented carbonate concretions throughout; fragments; noneffervescent; moderately alkaline, pH 8.0, hellige-truog; gradual wavy boundary.

Bss5—107 to 150 centimeters (42.1 to 59.1 inches); dark grayish brown (2.5Y 4/2), very dark grayish brown (2.5Y 3/2), moist; 3 percent reddish brown (5YR 5/4) fine and medium distinct irregular mottles; strong coarse and very coarse wedge parts to strong fine and medium angular blocky structure; extremely hard, extremely firm*; 3.0 fine to coarse roots throughout; 3.0 fine to coarse vesicular and tubular pores; 1 percent fine irregular weakly coherent cemented carbonate concretions throughout; fragments; very slight effervescence; moderately alkaline, pH 8.0, hellige-truog; clear wavy boundary.

Bssk1—150 to 183 centimeters (59.1 to 72.0 inches); grayish brown (10YR 5/2), dark grayish brown (10YR 4/2), moist; 3 percent reddish brown (5YR 5/4) fine distinct irregular mottles; strong coarse and very coarse wedge parts to strong fine and medium angular blocky structure; extremely hard, extremely firm*; 3.0 fine to coarse roots throughout; 3.0 fine to coarse vesicular and tubular pores; 3 percent fine and medium irregular weakly coherent cemented carbonate concretions throughout; fragments; strong effervescence; moderately alkaline, pH 8.0, hellige-truog; clear wavy boundary.

2Bssk2—183 to 203 centimeters (72.0 to 79.9 inches); grayish brown (10YR 5/2), dark grayish brown (10YR 4/2), moist; 5 percent reddish brown (5YR 5/4) fine and medium distinct irregular mottles; strong medium and coarse wedge parts to strong fine and medium angular blocky structure; very hard, very firm; 3.0 fine to coarse roots throughout; 3.0 fine to coarse vesicular and tubular pores; 3 percent fine and medium irregular weakly coherent cemented carbonate concretions throughout; fragments; strong effervescence; moderately alkaline, pH 8.0, hellige-truog; gradual wavy boundary.

2Bk—203 to 224 centimeters (79.9 to 88.2 inches); light reddish brown (5YR 6/4), reddish brown (5YR 5/4), moist; 3 percent dark grayish brown (10YR 4/2) medium distinct irregular mottles; moderate medium angular blocky parts to moderate very fine angular blocky structure; very hard, very firm; 2.0 fine and medium roots throughout; 2.0 fine and medium vesicular and tubular pores; 3 percent fine and medium irregular weakly coherent cemented carbonate concretions throughout; fragments; strong effervescence; moderately alkaline, pH 8.0, hellige-truog.