IDENTIFIERS

  • Current Taxon Name (Soil Name): Ector
  • OSD
  • Series Extent
  • User Site ID: S1991TX043001
  • User Pedon ID: 91TX043001
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - KSSL
  • Lab Pedon # - 91P0459
  • NCSS Pedon Lab Data NASIS Record ID - 63502
  • Print Date: 6/3/2024

    • 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: 30.1133327
  • Std. Longitude: -102.6688919
  • Datum: WGS84
  • Location Description: from the junction of US highway 90 and US 67; 8 miles east of Alpine; 59.0 miles east on US 90; (6.55 miles past the Brewster county line); 4.5 miles south on Bullis Gap Road; 40 feet south of road in range
  • Map Unit: ERG—Ector-Rock outcrop complex, 10 to 60 percent slopes
  • Country: US—United States
  • State: Texas
  • County: TX043—Brewster
  • MLRA: 81A—Edwards Plateau, Western Part
  • Regional Office: SC—South Central
  • Non-MLRA Soil Survey Area: TX622—Brewster County, Texas (Main Part)
  • 7.5 Minute USGS Quad: 30102-A6—Fresno Creek, Texas

    • PEDON

  • Describers Name: Rex Cochran
  • Current Taxonomic Class: Loamy-skeletal, carbonatic, thermic Lithic Calciustolls
  • Current Taxon Kind: series
  • Pedon Type: TUD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Ector
  • PSC - 25 to 43 cm.
  • Classificaton Date - 7/31/2008
  • Soil Taxonomic Edition - tenth edition
  • Moisture Class - ustic
  • Moisture Subclass - aridic (torric)
  • Sampled As Information:
  • Soil Name - Ector
  • Taxonomic Class - Loamy-skeletal, carbonatic, thermic Lithic Calciustolls
  • Taxon Kind - series
  • Classificaton Date - 5/1/1991
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: hillside or mountainside
  • Geomorphic Component Hills: nose slope
  • Hill Slope Profile: backslope
  • Slope Position: middle third
  • Slope Shape Down: convex
  • Runoff: very high
  • Drainage Class: well
  • Surface Fragments: 70.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/1/1991 (actual site observation date)
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, lithic

    indurated

    43 - 64

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

    mollic epipedon

    calcic horizon

    lithic contact

    0—25

    25—43

    43—64

    —-

    —-

    —-
    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

    32

    —

    —

    1082

    —

    0

    23

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 8 centimeters (0.0 to 3.1 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), moist; very gravelly clay loam; weak fine granular structure; slightly hard, friable; 2.5 fine and medium roots throughout; 3 percent by volume 75-162-250 millimeter limestone, unspecified fragments and 45 percent by volume 2-39-75 millimeter limestone, unspecified fragments; strong effervescence, by hcl, 1n; abrupt smooth boundary. Lab sample # 91P02627; observed in pit, small. common fine and medium roots throughout; effervescence is continuous
    Ak—8 to 25 centimeters (3.1 to 9.8 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), moist; very cobbly silty clay loam; weak fine granular structure; slightly hard, friable; 2.5 fine and medium roots throughout; 15 percent by volume 2-39-75 millimeter limestone, unspecified fragments and 40 percent by volume 75-162-250 millimeter limestone, unspecified fragments; strong effervescence, by hcl, 1n; clear wavy boundary. Lab sample # 91P02628; observed in pit, small. cobbles are coated with secondary carbonates on the lower sides, some small pendulants; common fine and medium roots throughout; effervescence is continuous
    Rk/Ak—25 to 43 centimeters (9.8 to 16.9 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), moist; very cobbly silty clay loam; weak fine granular structure; slightly hard, friable; 2.5 fine and medium roots throughout and 0.5 coarse roots throughout; 40 percent by volume 2-39-75 millimeter limestone, unspecified fragments and 40 percent by volume 75-162-250 millimeter limestone, unspecified fragments; strong effervescence, by hcl, 1n; abrupt wavy boundary. Lab sample # 91P02629; observed in pit, small. cobbles cated with secondary carbonates, some chunks of calcium carbonate, seams and plugs of calcium carbonate between the coarse fragments; few coarse roots throughout; common fine and medium roots throughout; effervescence is continuous
    R—43 to 64 centimeters (16.9 to 25.2 inches); bedrock; massive; extremely hard, extremely firm*, indurated; fragments; strong effervescence, by hcl, 1n.; observed in pit, small. no sample; hard, slightly fractured limestone bedrock; effervescence is continuous