IDENTIFIERS

Current Taxon Name (Soil Name): Voca

OSD

Series Extent

User Site ID: S2009TX307001

User Pedon ID: S09TX307001

Vegetation Plot ID: S2009TX307001

Transect:

User Transect ID - T09TX3070001

Lab Information:

Certified Lab Pedon Description - yes

Lab Source ID - KSSL

Lab Pedon # - 09N0837

NCSS Pedon Lab Data NASIS Record ID - 24843

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: 30.9507618

Std. Longitude: -99.1915665

Datum: WGS84

State: Texas

County: TX307—McCulloch

MLRA: 82A—Texas Central Basin

Non-MLRA Soil Survey Area: TX307—McCulloch County, Texas

7.5 Minute USGS Quad: 30099-H2—Spy Rock, Texas

PEDON

Describers Name: wg,jam,cs,alb,rd

Current Taxonomic Class: Fine, mixed, superactive, thermic Typic Paleustalfs

Current Taxon Kind: series

Pedon Type: OSD pedon

Pedon Purpose: full pedon description

Pedon #: 1

Correlated Information:

Soil Name - Voca

PSC - 28 to 78 cm.

Classificaton Date - 11/23/2009

Soil Taxonomic Edition - tenth edition

Moisture Class - ustic

Sampled As Information:

Soil Name - Voca

Classificaton Date - 4/21/2009

Dynamic Soil Properties:

Pedoderm Loose Cover Indicator - no

Hydric: no

Certification Status: certified

QC Status: level 3

QA Status: level 1

SITE

Parent Material: residuum weathered from granite and gneiss

Landscape: dissected plateau

Landform: undulating plain

Geomorphic Component Hills: side slope

Hill Slope Profile: shoulder

Slope Position: middle third

Slope Complexity: simple

Slope Shape Across: linear

Slope Shape Down: convex

Drainage Class: well

Geology: Town Mtn Granite member of the Pctm formation.

Surface Fragments:

Benchmark Soil?: no

VEGETATION

Ecological Sites. (Click Ecological Site ID For Link to EDIT.)
Ecological Site ID	Ecological Site Name	Correlation Data	Classifier
R082AY600TX	Gravelly Sandy Loam 25-32 PZ

SITE OBSERVATION

Observation Date: 4/21/2009 (actual site observation date)

Air Photo ID:

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

Yield Study ID -

Current Weather - sunny

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
ACGR AMBRO ERAGR OPENL OPLE PRGLG ZAFA	Acacia greggii Ambrosia Eragrostis Opuntia engelmannii var. lindheimeri Opuntia leptocaulis Prosopis glandulosa var. glandulosa Zanthoxylum fagara	catclaw acacia ragweed lovegrass Texas pricklypear Christmas cactus honey mesquite lime pricklyash	— — — — — — —	— — — — — — —	— — — — — — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon abrupt textural change	0—28 28—203 28—	—- —- —-

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	—	—	498	—	310	—	—	—	—	—	—	—	—	—	—	—	—	—	—

A1—0 to 15 centimeters (0.0 to 5.9 inches); brown (7.5YR 5/3), brown (7.5YR 4/3), moist; gravelly sandy loam; 75 percent sand; 12 percent silt; 13 percent clay; weak fine subangular blocky structure; slightly hard, friable, nonsticky, nonplastic; low excavation difficulty; 5.0 very fine roots throughout and 4.0 medium roots throughout and 5.0 fine roots throughout; 5.0 very fine and 5.0 fine pores; 18 percent by volume nonflat subrounded indurated 2-3-5 millimeter quartz fragments; noneffervescent, by hcl, 3n; neutral, pH 6.7; clear smooth boundary. Lab sample # 09N02898; moist when described; observed in pit, large or quarry

A2—15 to 28 centimeters (5.9 to 11.0 inches); brown (7.5YR 5/4), brown (7.5YR 4/4), moist; gravelly coarse sandy loam; 75 percent sand; 12 percent silt; 13 percent clay; weak medium subangular blocky structure; slightly hard, friable, nonsticky, nonplastic; low excavation difficulty; 1.0 very fine roots throughout and 1.0 medium roots throughout and 3.0 fine roots throughout; 4.0 very fine and 4.0 fine pores; 25 percent by volume nonflat subrounded indurated 2-3-5 millimeter quartz fragments; noneffervescent, by hcl, 3n; slightly acid, pH 6.3; clear wavy boundary. Lab sample # 09N02899; moist when described; observed in pit, large or quarry

Bt1—28 to 42 centimeters (11.0 to 16.5 inches); yellowish red (5YR 5/6), yellowish red (5YR 4/6), moist; very gravelly sandy clay loam; 56 percent sand; 10 percent silt; 34 percent clay; weak medium subangular blocky structure; hard, firm, slightly sticky, slightly plastic; moderate excavation difficulty; 3.0 very fine roots throughout and 1.0 medium roots throughout and 2.0 fine roots throughout; 3.0 very fine and 2.0 fine pores; 5 percent distinct reddish brown (5YR 4/4), moist, clay films on vertical faces of peds; 45 percent by volume nonflat subrounded indurated 2-4-20 millimeter quartz fragments; noneffervescent, by hcl, 3n; slightly acid, pH 6.4; clear wavy boundary. Lab sample # 09N02900; moist when described; observed in pit, large or quarry. continuous - phpvsfiid 456217; continuous - phpvsfiid 456217

Bt2—42 to 55 centimeters (16.5 to 21.7 inches); red (2.5YR 5/8), red (2.5YR 4/8), moist; gravelly clay; 48 percent sand; 10 percent silt; 45 percent clay; moderate medium subangular blocky structure; hard, firm, moderately sticky, moderately plastic; moderate excavation difficulty; 3.0 very fine roots and 1.0 fine roots; 3.0 very fine and 3.0 fine pores; 5 percent prominent very dark gray (10YR 3/1), moist, organic stains on vertical faces of peds and 15 percent distinct reddish brown (5YR 4/4), moist, clay films on vertical faces of peds; 20 percent by volume nonflat subrounded indurated 2-4-20 millimeter quartz fragments; noneffervescent, by hcl, 3n; slightly acid, pH 6.2; clear wavy boundary. Lab sample # 09N02901; moist when described; observed in pit, large or quarry. discontinuous - phpvsfiid 456219; continuous - phpvsfiid 456218; discontinuous - phpvsfiid 456219; continuous - phpvsfiid 456218

Bt3—55 to 87 centimeters (21.7 to 34.3 inches); red (2.5YR 5/8), red (2.5YR 4/8), moist; gravelly clay; 45 percent sand; 10 percent silt; 45 percent clay; moderate medium subangular blocky structure; hard, firm, moderately sticky, moderately plastic; moderate excavation difficulty; 2.0 very fine roots and 1.0 fine roots; 1.0 very fine and 1.0 fine pores; 15 percent prominent reddish brown (5YR 4/4), moist, clay films on vertical faces of peds; 15 percent fine prominent platy noncoherent cemented mica flakes, unspecified with sharp boundaries in cracks; 20 percent by volume nonflat subrounded indurated 2-5-20 millimeter quartz fragments; noneffervescent, by hcl, 3n; moderately acid, pH 5.6; gradual wavy boundary. Lab sample # 09N02902; moist when described; observed in pit, large or quarry. continuous - phpvsfiid 456220; continuous - phpvsfiid 456220

BCt—87 to 203 centimeters (34.3 to 79.9 inches); red (10R 4/6), dark red (10R 3/6), moist; extremely gravelly coarse sandy loam; 54 percent sand; 20 percent silt; 26 percent clay; moderate very fine subangular blocky structure; very hard, firm, noncoherent, slightly sticky, slightly plastic; high excavation difficulty; 0.5 very fine roots in cracks; 1.0 very fine and 1.0 fine pores; 90 percent prominent clay films on rock fragments; 85 percent by volume nonflat angular indurated 2-8-75 millimeter granite fragments; noneffervescent, by hcl, 3n; moderately acid, pH 5.8. Lab sample # 09N02903; dry when described; observed in pit, large or quarry. continuous - phpvsfiid 456221; continuous - phpvsfiid 456221