IDENTIFIERS

  • Current Taxon Name (Soil Name): Sauceda
  • OSD
  • Series Extent
  • User Site ID: S1993-TX377-002-copy
  • User Pedon ID: S1993-TX377-002-copy
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - TAMU
  • Lab Pedon # - S93TX377002
  • NCSS Pedon Lab Data NASIS Record ID - 45724
  • Print Date: 2/17/2025

    • 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: 29.7581361
  • Std. Longitude: -103.9155667
  • Datum: WGS84
  • Location Description: Presidio County, Texas; from the intersection of US Highways 67 and 90 in Marfa, 7.3 miles south on US highway 67 to intersection with RM 169, 24.6 miles southeast on RM 169 to end of pavement, 7.2 miles south on Casa Piedra road to intersection at mine, 10.2 miles south, southeast, and east on county road to intersection with ranch road, 0.4 miles northeast on ranch road to intersection, 3.8 miles northwest on ranch road to intersection, 1.4 miles northeast and north on ranch road, 0.5 miles east on ranch road parallel to fence, then 20 feet north of road in range.
  • 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: 29103-G8—Puerto Potrillo, Texas

    • PEDON

  • Describers Name: Rex Cochran and Tom Hallmark
  • Current Taxonomic Class: Loamy-skeletal, mixed, superactive, calcareous, thermic Lithic Ustic Torriorthents
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: PedonPC
  • Correlated Information:
  • Soil Name - Sauceda (flagged as OSD)
  • PSC - 0 to 20 cm.
  • Classificaton Date - 8/28/2017
  • Classifier - Lynn Loomis
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - aridic (torric)
  • Moisture Subclass - ustic
  • Sampled As Information:
  • Soil Name - Sauceda-OSD-Data
  • Classificaton Date - 7/1/2008
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 1


    • SITE

  • Parent Material: zeolitic gravelly residuum weathered from ignimbrite
  • Drainage Class: well
  • Bedrock: indurated ignimbrite at 20cm
  • Geology: Mitchell Mesa Ignimbrite formation.
  • Surface Fragments: 55.00 percent nonflat subrounded indurated 2- to 75-millimeter ignimbrite, 1.00 percent nonflat subrounded indurated 250- to 600-millimeter ignimbrite, 1.00 percent nonflat subrounded indurated 600- to 2000-millimeter ignimbrite, 9.00 percent nonflat subrounded indurated 75- to 250-millimeter ignimbrite,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/25/1993 (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
    • Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, lithic

    indurated

    20 - 200

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

    ochric epipedon

    lithic contact

    0—20

    20—20

    —-

    —-
    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

    3.1

    —

    —

    1256.4

    —

    356

    556

    —

    17.6

    —

    —

    —

    —

    —

    —

    —

    PRISM

    —

    —
    A1—0 to 5 centimeters (0.0 to 2.0 inches); brown (7.5YR 4/2), dark brown (7.5YR 3/2), moist; very gravelly loam; moderate medium subangular blocky parts to moderate fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; very high excavation difficulty; 5.0 very fine roots and 5.0 fine roots; carbonate coats on bedrock; medium carbonate masses on bottom of rock fragments; 50 percent by volume nonflat subrounded indurated 2-?-75 millimeter ignimbrite fragments; slight effervescence, by hcl, 1n; neutral, pH 7.0, pH meter; abrupt smooth boundary. Lab sample # TAMU4752; observed in trench
    A2—5 to 20 centimeters (2.0 to 7.9 inches); brown (7.5YR 5/3), dark brown (7.5YR 3/3), moist; very cobbly loam; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; very high excavation difficulty; 5.0 very fine roots and 5.0 fine roots; 20 percent by volume nonflat subrounded indurated 2-?-75 millimeter ignimbrite fragments and 30 percent by volume nonflat subrounded indurated 75-162-250 millimeter ignimbrite fragments; strong effervescence, by hcl, 1n; slightly alkaline, pH 7.4, pH meter; abrupt smooth boundary. Lab sample # TAMU4753; observed in trench
    Rk—20 to 36 centimeters (7.9 to 14.2 inches); pinkish gray (5YR 7/2), reddish gray (5YR 5/2), moist; bedrock; indurated; extremely high excavation difficulty; fragments; slight effervescence, by hcl, 1n; clear smooth boundary.; observed in trench
    R—36 to 200 centimeters (14.2 to 78.7 inches); bedrock; indurated; extremely high excavation difficulty; fragments; noneffervescent, by hcl, 1n.; observed in trench