IDENTIFIERS

  • Current Taxon Name (Soil Name): Corazones
  • OSD
  • Series Extent
  • User Site ID: S1985-TX377-001
  • User Pedon ID: S1985-TX377-001
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - SSL
  • Lab Pedon # - 85P0645
  • NCSS Pedon Lab Data NASIS Record ID - 56911
  • Print Date: 2/16/2025

    • 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: 29.9977779
  • Std. Longitude: -104.6299973
  • Datum: WGS84
  • Location Description: Approximately 3 miles east of Ruidosa, Texas on Marfa road.
  • Country: US—United States
  • State: Texas
  • County: TX377—Presidio
  • MLRA: 42—Southern Desertic Basins, Plains, and Mountains
  • MLRA Soil Survey Area: SW-MAF—Marfa, Texas
  • Non-MLRA Soil Survey Area: TX377—Presidio County, Texas
  • 7.5 Minute USGS Quad: 29104-H6—Las Conchas, Texas

    • PEDON

  • Describers Name: Rex Cochran and Jerry Rives
  • Current Taxonomic Class: Loamy-skeletal, mixed, superactive, hyperthermic Typic Haplocalcids
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Corazones
  • PSC - 25 to 100 cm.
  • Classificaton Date - 7/16/2015
  • Classifier - Lynn Loomis
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - aridic (torric)
  • Moisture Subclass - typic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 1


    • SITE

  • Surface Fragments: 12.00 percent nonflat subangular indurated 2- to 75-millimeter rhyolite, 12.00 percent nonflat subangular indurated 2- to 75-millimeter quartzite, 8.00 percent nonflat subangular indurated 2- to 75-millimeter chert, 32.00 percent nonflat subangular indurated 2- to 75-millimeter sandstone, unspecified, 22.00 percent nonflat subangular indurated 2- to 75-millimeter basalt, 14.00 percent nonflat subangular indurated 2- to 75-millimeter limestone, unspecified,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/1/1985 (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
  • Site Erosion Accelerated: water erosion
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    calcic horizon

    0—25

    25—74

    —-

    —-
    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

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 25 centimeters (0.0 to 9.8 inches); grayish brown (10YR 5/2) interior, grayish brown (10YR 5/2) interior, moist; very gravelly coarse sandy loam; weak fine granular structure; slightly hard, friable; common fine roots; 0.5 fine tubular pores; 1 percent by volume nonflat subrounded indurated 250-?-600 millimeter unspecified fragments and 4 percent by volume nonflat subangular indurated 75-?-250 millimeter unspecified fragments and 25 percent by volume nonflat subangular indurated 2-?-75 millimeter igneous, unspecified fragments and 25 percent by volume nonflat subangular indurated 2-?-75 millimeter basalt fragments; GRV-SL of Field texture class; violent effervescence, by hcl, 1n; clear wavy boundary. Lab sample # 85P3334; observed in trench. About 50 percent by volume of mixed siliceous and volcanic fragments mostly less than 1.25 cm in diameter; most pebbles have a thin coating of calcium carbonate.; common fine roots
    Bk1—25 to 74 centimeters (9.8 to 29.1 inches); pale brown (10YR 6/3) interior, brown (10YR 5/3) interior, moist; very gravelly coarse sandy loam; weak fine granular structure; slightly hard, friable; common fine roots; 0.5 fine tubular pores; distinct carbonate coats on rock fragments; 25 percent medium distinct very weakly coherent cemented carbonate nodules in matrix; 1 percent by volume nonflat subrounded indurated 250-?-600 millimeter unspecified fragments and 3 percent by volume nonflat subangular indurated 75-?-250 millimeter unspecified fragments and 30 percent by volume nonflat subangular indurated 2-?-75 millimeter igneous, unspecified fragments and 30 percent by volume nonflat subangular indurated 2-?-75 millimeter basalt fragments; GRV-SL of Field texture class; violent effervescence, by hcl, 1n; gradual wavy boundary. Lab sample # 85P3335; observed in trench. About 65 percent by volume of mixed siliceous and volcanic pebbles with few cobbles and stones; about 20-30 percent weakly cemented carbonatic concretions mostly less than 2.5 cm in diameter; coarse fragments have coatings of calcium carbona; common fine roots
    Bk2—74 to 114 centimeters (29.1 to 44.9 inches); pale brown (10YR 6/3) interior, brown (10YR 5/3) interior, moist; extremely cobbly loamy coarse sand; weak fine granular structure; slightly hard, friable; few fine roots; 0.5 fine tubular pores; distinct carbonate coats on bottom of rock fragments; 10 percent medium prominent irregular strongly coherent cemented carbonate nodules in matrix; 35 percent by volume nonflat subangular indurated 2-?-75 millimeter unspecified fragments and 40 percent by volume nonflat subangular indurated 75-?-250 millimeter unspecified fragments; CB-LFS of Field texture class; violent effervescence, by hcl, 1n; diffuse wavy boundary. Lab sample # 85P3336; observed in trench. About 75 percent by volume of mixed fragments, which consists of 40% cobbles and 35% gravel; lower surfaces of pebbles are coated with films of calcium carbonate; about 10% strongly cemented concretions of calcium carbonate.; few fine roots
    2C—114 to 140 centimeters (44.9 to 55.1 inches); pale brown (10YR 6/3) interior, brown (10YR 4/3) interior, moist; very gravelly loamy coarse sand; slightly hard, friable; few fine roots; 0.5 fine tubular pores; distinct carbonate coats on bottom of rock fragments; 2 percent medium distinct lenticular weakly coherent cemented carbonate nodules along lamina or strata surfaces; 25 percent by volume nonflat subangular indurated 2-?-75 millimeter igneous, unspecified fragments and 25 percent by volume nonflat subangular indurated 2-?-75 millimeter basalt fragments; GRV-LFS of Field texture class; violent effervescence, by hcl, 1n. Lab sample # 85P3337; observed in trench. About 50 percent by volume of mixed fragments mostly less than 2.5 cm in diameter; few weakly cemented bodies of calcium carbonate associated with gravel strata concentrations; few patchy films of calcium carbonate on the lower surfaces of p; few fine roots