IDENTIFIERS

Current Taxon Name (Soil Name): Cho

OSD

Series Extent

User Site ID: 91TX607005

User Pedon ID: S91TX137005

Vegetation Plot ID: 91TX607005

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - TAMU

Lab Pedon # - S91TX137005

NCSS Pedon Lab Data NASIS Record ID - 45502

Print Date: 6/2/2024

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: 30.1900005

Std. Longitude: -100.6591644

Datum: WGS84

Location Description: From junction of US Highway 277 and Texas Highway 55 in northwestern Edwards County, 6.4 miles South on US Highway 277 to entrance of Earwood Ranch, 1.75 miles east and south on a graded ranch road, 75 feet west and 125 feet south in rangeland

Country: US—United States

State: Texas

County: TX137—Edwards

MLRA: 81B—Edwards Plateau, Central Part

7.5 Minute USGS Quad: 30100-B6—Turney Draw NW, Texas

PEDON

Describers Name: Lynn E. Loomis, Wayne J. Gabriel

Current Taxonomic Class: Loamy, carbonatic, thermic, shallow Petrocalcic Calciustolls

Pedon Type: TUD pedon

Pedon Purpose: full pedon description

Pedon Record Orgin: Converted from PDP 3.x

Sampled As Information:

Soil Name - Cho

Taxonomic Class - Loamy, carbonatic, thermic, shallow Petrocalcic Calciustolls

PSC - 0 to 28 cm.

Classificaton Date - 3/3/1991

Moisture Class - ustic

Dynamic Soil Properties:

Erosion Class - 2

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Landscape: river valley

Landform: fluvial terrace

Geomorphic Component Hills: side slope

Hill Slope Profile: shoulder

Slope Shape Across: concave

Slope Shape Down: convex

Runoff: high

Drainage Class: well

Bedrock: conglomerate, calcareous with 100 to <200

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 3/3/1991 (actual site observation date)

Air Photo ID: 17

Microrelief Elevation: 3

Surface Cover Properties:

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
CELTI COVI8 DITE3 ERPI5 KALA MATR3 NOTE OPUNT QUVI	Celtis Condalia viridis Diospyros texana Erioneuron pilosum Kalmia latifolia Mahonia trifoliolata Nolina texana Opuntia Quercus virginiana	hackberry green snakewood Texas persimmon hairy woollygrass mountain laurel algerita Texas sacahuista pricklypear live oak	— — — — — — — — —	— — — — — — — — —	— — — — — — — — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
mollic epipedon petrocalcic horizon calcic horizon	0—29 29—36 36—182	—- —- —-

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
6	15	12.2	628	—	225	559	—	—	18.3	26.7	8.9	—	—	—	—	—	TX424	Sonora, Texas	Official U.S.

A1—0 to 19 centimeters (0.0 to 7.5 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), moist; gravelly silt loam; weak medium subangular blocky parts to moderate fine and medium granular structure; slightly hard, very friable, slightly sticky, slightly plastic; 7.0 very fine and fine roots throughout and 0.5 medium roots throughout; 5.0 very fine and fine high-continuity interstitial pores; 2 percent by volume subrounded 75-162-250 millimeter limestone, unspecified fragments and 18 percent by volume subrounded 2-39-75 millimeter limestone, unspecified fragments; violent effervescence, by hcl, 1n; clear wavy boundary. Lab sample # TAMU4299; moist when described;

A2—19 to 29 centimeters (7.5 to 11.4 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), moist; gravelly loam; weak medium subangular blocky parts to weak fine granular structure; slightly hard, very friable, slightly sticky, slightly plastic; 2.0 very fine and fine roots top of horizon and 5.0 very fine and fine roots throughout and 1.0 medium and coarse roots throughout; 5.0 very fine and fine high-continuity interstitial pores; 2 percent by volume subrounded 75-162-250 millimeter limestone, unspecified fragments and 31 percent by volume subrounded 2-39-75 millimeter limestone, unspecified fragments; violent effervescence, by hcl, 1n; abrupt wavy boundary. Lab sample # TAMU4300; moist when described;

Bkm—29 to 36 centimeters (11.4 to 14.2 inches); 60 percent white (10YR 8/1) and 40 percent very pale brown (10YR 7/3) weathered bedrock; massive; strongly cemented by carbonates; fragments; violent effervescence, by hcl, 1n; clear wavy boundary. Lab sample # TAMU4301; dry when described;

Bk1—36 to 62 centimeters (14.2 to 24.4 inches); 50 percent white (10YR 8/1) and 50 percent very pale brown (10YR 7/3) weathered bedrock; massive; weakly cemented by carbonates; fragments; violent effervescence, by hcl, 1n; gradual wavy boundary. Lab sample # TAMU4302; dry when described;

Bk2—62 to 95 centimeters (24.4 to 37.4 inches); 60 percent very pale brown (10YR 7/3) and 40 percent white (10YR 8/1) gravelly silty clay loam; weak fine and medium subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; 1 percent by volume 2-39-75 millimeter sedimentary, unspecified fragments and 29 percent by volume 2-39-75 millimeter limestone, unspecified fragments; violent effervescence, by hcl, 1n; gradual wavy boundary. Lab sample # TAMU4303; dry when described;

Bk3—95 to 182 centimeters (37.4 to 71.7 inches); 70 percent very pale brown (10YR 7/3) and 30 percent white (10YR 8/1) gravelly silty clay loam; 32 percent clay; weak fine and medium subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; 1.0 very fine and fine roots in cracks; 1 percent by volume 2-39-75 millimeter sedimentary, unspecified fragments and 19 percent by volume 2-39-75 millimeter limestone, unspecified fragments; violent effervescence, by hcl, 1n; slightly alkaline, pH 7.8, unspecified. Lab sample # TAMU4304; dry when described;