IDENTIFIERS

  • Current Taxon Name (Soil Name): Copita
  • OSD
  • Series Extent
  • User Site ID: S02-TX505-001A
  • User Pedon ID: 02TX505001A
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - KSSL
  • Lab Pedon # - 03N0177
  • NCSS Pedon Lab Data NASIS Record ID - 15688
  • 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: 26.7138615
  • Std. Longitude: -99.1370316
  • Datum: WGS84
  • Location Description: From the intersection of US Highway 83 and Texas Highway 16 in Zapata, 19.6 miles south on Highway 83, 2.44 miles west and north on private ranch road, 0.2 mile east on ranch road, 200 feet south in rangeland.
  • Map Unit: 49—Copita fine sandy loam, 1 to 5 percent slopes
  • Country: US—United States
  • State: Texas
  • County: TX505—Zapata
  • MLRA: 83B—Western Rio Grande Plain
  • Regional Office: SC—South Central
  • Non-MLRA Soil Survey Area: TX505—Zapata County, Texas
  • 7.5 Minute USGS Quad: 26099-F2—Beckwith Arm, Texas

    • PEDON

  • Describers Name: Ramiro Molina, Nathan Haile, Wayne Gabriel, Dennis Brezina, Maurice Jurena and Jamey Douglass
  • Current Taxonomic Class: Fine-loamy, mixed, superactive, hyperthermic Aridic Calciustepts
  • Current Taxon Kind: series
  • Pedon Type: TUD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Copita
  • PSC - 25 to 70 cm.
  • Classificaton Date - 11/4/2009
  • Classifier - Clark Harshbarger
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Subclass - aridic (torric)
  • Sampled As Information:
  • Soil Name - Copita
  • Taxonomic Class - Fine-loamy, mixed, active, hyperthermic Aridic Calciustepts
  • Taxon Kind - series
  • Classificaton Date - 10/8/2002
  • Soil Taxonomic Edition - eighth edition
  • Moisture SUBClass - aridic (torric)
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified


    • SITE

  • Slope Position: upper third
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: low
  • Drainage Class: well
  • Bedrock: strongly coherent sandstone, unspecified at 127cm with 10 to <45
  • Geology: Laredo Formation formation.
  • Surface Fragments: 1.00 percent flat subangular moderately coherent cemented 2- to 75-millimeter sandstone, calcareous,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/8/2002 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - shrub cover
  • Site Obs. Cover Kind 2 - rangeland, shrubby
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Current Weather - overcast
  • Current Air Temp - 32
    • Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, lithic

    strongly coherent

    127 - 152

    —
    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    secondary carbonates

    paralithic materials

    paralithic contact

    5—127

    70—127

    127—152

    —-

    —-

    —-
    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

    1.5

    —

    —

    112.2

    —

    160

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A1—0 to 5 centimeters (0.0 to 2.0 inches); brown (10YR 4/3), dark brown (10YR 3/3), moist; fine sandy loam; 12 percent clay; weak medium subangular blocky structure; slightly hard, very friable; 3.0 very fine roots and 1.0 fine roots; 3.0 very fine tubular and 1.0 fine tubular pores; 1 percent fine shell fragments in matrix; fragments; slight effervescence; moderately alkaline, pH 7.9; abrupt smooth boundary. Lab sample # 03N00933
    A2—5 to 28 centimeters (2.0 to 11.0 inches); brown (10YR 4/3), dark grayish brown (10YR 4/2), moist; fine sandy loam; 15 percent clay; weak coarse subangular blocky parts to weak medium subangular blocky structure; slightly hard, very friable; 3.0 very fine roots and 2.0 fine roots; 1.0 very fine tubular pores; 1 percent fine carbonate masses and 1 percent fine carbonate nodules and 1 percent fine shell fragments in matrix; fragments; slight effervescence; moderately alkaline, pH 7.9; clear wavy boundary. Lab sample # 03N00934
    Bk1—28 to 45 centimeters (11.0 to 17.7 inches); brown (10YR 5/3), brown (10YR 4/3), moist; fine sandy loam; 18 percent clay; moderate medium subangular blocky structure; moderately hard, friable; 1.0 very fine roots and 1.0 fine roots; 1.0 very fine tubular and 1.0 fine tubular pores; moderately coherent cemented and 2 percent medium spherical weakly coherent cemented carbonate concretions in matrix; fragments; strong effervescence; moderately alkaline, pH 8.2; clear wavy boundary. Lab sample # 03N00935
    Bk2—45 to 70 centimeters (17.7 to 27.6 inches); yellowish brown (10YR 5/4), dark yellowish brown (10YR 4/4), moist; fine sandy loam; 24 percent clay; weak fine subangular blocky structure; moderately hard, friable; 1.0 very fine roots and 1.0 fine roots; moderately coherent cemented and 50 percent fine to coarse weakly coherent cemented carbonate concretions in matrix; 10 percent by volume flat angular moderately coherent cemented 2-4-6 millimeter sandstone, unspecified fragments; violent effervescence; moderately alkaline, pH 8.3; abrupt wavy boundary. Lab sample # 03N00936
    Cr/Bkm—70 to 127 centimeters (27.6 to 50.0 inches); 70 percent pale yellow (2.5Y 7/4) and 25 percent yellowish brown (10YR 5/4) loamy fine sand; massive; strongly coherent; high excavation difficulty; fragments; moderately alkaline, pH 8.3; abrupt smooth boundary. Lab sample # 03N00937. The Cr bedrock described is strongly cemented sandstone. The excavation difficulty class is high. It remained a Cr horizon after performing the rupture resistance test because the fractures are less than 10 cm apart.
    R—127 to 152 centimeters (50.0 to 59.8 inches); pale yellow (2.5Y 7/4) bedrock; strongly coherent; high excavation difficulty; fragments. Lab sample # 03N00938. In the field we described this layer to be a Cr horizon. After air drying the sample , submerging it in water for one hour and performing the rupture resistance test we found that it was strongly cemented sandstone and should be changed to an R.; Crushed sample had a texture of FS.