IDENTIFIERS

  • Current Taxon Name (Soil Name): Brewster
  • OSD
  • Series Extent
  • User Site ID: 30103-C5-001
  • User Pedon ID: S1990-TX043-001
  • Vegetation Plot ID: 30103-C5-001
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - TAMU
  • Lab Pedon # - S90TX043001
  • NCSS Pedon Lab Data NASIS Record ID - 45495
  • Print Date: 5/20/2024

    • 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: 30.3007221
  • Std. Longitude: -103.6004715
  • Datum: WGS84
  • Location Description: From the junction of US Highway 90 and Texas Highway 118 South in Alpine, 5.65 miles south on Texas Highway 118, 115 feet west in range
  • Country: US—United States
  • State: Texas
  • County: TX043—Brewster
  • MLRA: 42—Southern Desertic Basins, Plains, and Mountains
  • MLRA Soil Survey Area: SW-MAF—Marfa, Texas
  • Non-MLRA Soil Survey Area: TX622—Brewster County, Texas (Main Part)
  • 7.5 Minute USGS Quad: 30103-C5—Bird Mountain, Texas

    • PEDON

  • Describers Name: Rex Cochran, Jerry Rives, Sharon Elias, and John Jacob
  • Current Taxonomic Class: Loamy-skeletal, mixed, superactive, thermic Aridic Lithic Argiustolls
  • Current Taxon Kind: taxadjunct
  • Pedon Type: TUD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Correlated Information:
  • Soil Name - Brewster
  • PSC - 10 to 27 cm.
  • Classificaton Date - 8/31/2016
  • Classifier - Chance M. Robinson
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - ustic
  • Moisture Subclass - aridic (torric)
  • Sampled As Information:
  • Soil Name - Brewster-data
  • Classificaton Date - 3/5/1990
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 1


    • SITE

  • Geomorphic Component Mountains: mountainflank, upper third
  • Hill Slope Profile: backslope
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: high
  • Drainage Class: well
  • Bedrock: indurated trachyte at 27cm
  • Geology: Crossen Trachyte formation.
  • Surface Fragments: 50.00 percent nonflat angular indurated 2- to 75-millimeter trachyte, 10.00 percent nonflat angular indurated 75- to 250-millimeter trachyte,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 3/5/1990 (actual site observation date)
  • Air Photo ID: 11
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    ARIST

    ARPUW

    ARTE3

    BOBA3

    BOCH

    BOCU

    BOER4

    BOGR2

    BOHI2

    ERIN

    ERIOG

    KOSP

    LYPH

    MIACB

    NOTE

    OPIM

    SCSCN2

    Aristida

    Aristida purpurea var. wrightii

    Aristida ternipes

    Bothriochloa barbinodis

    Bouteloua chondrosioides

    Bouteloua curtipendula

    Bouteloua eriopoda

    Bouteloua gracilis

    Bouteloua hirsuta

    Eragrostis intermedia

    Eriogonum

    Koeberlinia spinosa

    Lycurus phleoides

    Mimosa aculeaticarpa var. biuncifera

    Nolina texana

    Opuntia imbricata

    Schizachyrium scoparium ssp. neomexicanum

    threeawn

    Wright's threeawn

    spidergrass

    cane bluestem

    sprucetop grama

    sideoats grama

    black grama

    blue grama

    hairy grama

    plains lovegrass

    buckwheat

    crown of thorns

    common wolfstail

    catclaw mimosa

    Texas sacahuista

    tree cholla

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    Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, lithic

    indurated

    27 - 200

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

    mollic epipedon

    argillic horizon

    lithic contact

    0—27

    10—27

    27—27

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    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

    8

    122

    46

    1570

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    120

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    A—0 to 10 centimeters (0.0 to 3.9 inches); brown (7.5YR 4/2), dark brown (7.5YR 3/2), moist; very cobbly loam; hard, friable, moderately sticky, moderately plastic; 3.0 very fine roots throughout; 50 percent by volume nonflat subangular indurated 75-162-250 millimeter trachyte fragments; noneffervescent, by hcl, 1n; clear smooth boundary. Lab sample # TAMU4099; observed in pit, small
    Bt—10 to 27 centimeters (3.9 to 10.6 inches); brown (7.5YR 4/2), dark brown (7.5YR 3/2), moist; very cobbly clay loam; hard, friable, moderately sticky, moderately plastic; 2.0 very fine roots in cracks; distinct pressure faces; 50 percent by volume nonflat subangular indurated 75-162-250 millimeter trachyte fragments; noneffervescent, by hcl, 1n; abrupt wavy boundary. Lab sample # TAMU4100; observed in pit, small. discontinuous - phpvsfiid 239543; discontinuous - phpvsfiid 239543
    R—27 to 200 centimeters (10.6 to 78.7 inches); bedrock; very rigid, very rigid, indurated; extremely high excavation difficulty; fragments; noneffervescent, by hcl, 1n. Lab sample # TAMU4101; observed in pit, small