IDENTIFIERS

  • Current Taxon Name (Soil Name): Bigtoe
  • OSD
  • Series Extent
  • User Site ID: 02-JFD-05
  • User Pedon ID: 02OR035006
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 02N0459
  • NCSS Pedon Lab Data NASIS Record ID - 14124
  • 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: 42.6070633
  • Std. Longitude: -121.3674850
  • Datum: WGS84
  • Township: 34 S.
  • Range: 11 E.
  • Section: 24
  • PLSS Details: about 300 feet east and 1950 feet north of the southwest corner
  • Location Description: South of Teddy Powers Meadow, about 2 miles north and 27 miles east of Chiloquin; about 2200 feet west of FS Road #4466
  • Map Unit: 1090—Bigtop-Shortnap complex, 0 to 2 percent slopes
  • Country: US—United States
  • State: Oregon
  • County: OR035—Klamath
  • MLRA: 6—Cascade Mountains, Eastern Slope
  • Non-MLRA Soil Survey Area: OR683—Winema National Forest Area, Oregon
  • 7.5 Minute USGS Quad: 42121-E3—Spodue Mountain, Oregon

    • PEDON

  • Describers Name: Nicita, Eric
  • Current Taxonomic Class: Fine, smectitic, frigid Aquandic Argialbolls
  • Current Taxon Kind: series
  • Pedon Type: representative pedon for component
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 6
  • Sampled As Information:
  • Soil Name - Bigtoe
  • Taxonomic Class - Fine, smectitic, frigid Aquandic Argialbolls
  • PSC - 65 to 77 cm.
  • Classificaton Date - 6/9/2002
  • Soil Taxonomic Edition - eighth edition
  • Moisture SUBClass - aquic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: volcanic ash derived from dacite and/or pumice derived from dacite over residuum weathered from volcanic rock and/or tephra
  • Slope Complexity: simple
  • Slope Shape Across: convex
  • Slope Shape Down: linear
  • Drainage Class: poorly
  • Flooding: frequent flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/9/2002 (actual site observation date)
  • Surface Water Kind: none observed
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • 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

    abrupt textural change

    duripan

    noncoherent

    strongly coherent

    65 -

    77 -

    —

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

    aquic conditions

    mollic epipedon

    albic horizon

    slickensides

    abrupt textural change

    argillic horizon

    duripan

    2—92

    2—39

    59—65

    65—77

    65—

    65—77

    77—

    —90—

    —37—

    —6—

    —12—

    —-

    —12—

    —-
    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

    2

    —

    —

    1491

    —

    150

    560

    —

    10

    5.3

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Oe—0 to 2 centimeters (0.0 to 0.8 inches); slightly decomposed plant material; low excavation difficulty; fragments; abrupt broken boundary.; moist when described; observed in pit, large or quarry
    A1—2 to 10 centimeters (0.8 to 3.9 inches); very dark grayish brown (10YR 3/2) broken face, grayish brown (10YR 5/2) broken face, dry; ashy sandy loam; moderate coarse subangular blocky parts to moderate fine granular structure; slightly hard, very friable; low excavation difficulty; 10.0 very fine roots throughout and 3.0 fine roots throughout; 3.0 very fine low-continuity tubular and 3.0 very fine low-continuity interstitial and 3.0 fine moderate-continuity tubular and 0.1 coarse low-continuity vesicular pores; 1 percent fine distinct spherical strongly coherent cemented dark brown (10YR 3/3), moist, and yellowish brown (10YR 5/4), dry, iron-manganese concretions throughout and 5 percent fine prominent cylindrical extremely weakly coherent cemented brown (7.5YR 4/4), moist, and reddish yellow (7.5YR 6/8), dry, iron-manganese masses infused into matrix adjacent to pores; 1 percent fine distinct spherical strongly coherent cemented dark brown (10YR 3/3), moist, and yellowish brown (10YR 5/4), dry,; 1 percent by volume nonflat subrounded moderately coherent cemented 2-?-4 millimeter pumice fragments and 3 percent by volume nonflat subangular indurated 2-?-20 millimeter basalt fragments; slightly acid, pH 6.2, bromthymol blue; clear smooth boundary. Lab sample # 02N02361; moist when described; observed in pit, large or quarry
    A2—10 to 39 centimeters (3.9 to 15.4 inches); very dark grayish brown (10YR 3/2) broken face, grayish brown (10YR 5/2) broken face, dry; ashy sandy loam; moderate coarse subangular blocky parts to moderate fine granular structure; moderately hard, very friable, slightly sticky, slightly plastic; moderate excavation difficulty; 3.0 very fine roots throughout and 0.5 fine roots throughout; 3.0 very fine low-continuity tubular and 3.0 medium moderate-continuity tubular and 9.0 fine moderate-continuity tubular pores; 1 percent fine distinct spherical strongly coherent cemented black (2.5Y 2.5/1), moist, and very dark grayish brown (2.5Y 3/2), dry, iron-manganese concretions throughout and 5 percent fine prominent irregular extremely weakly coherent cemented brown (7.5YR 4/4), moist, and reddish yellow (7.5YR 6/8), dry, iron-manganese masses throughout; 1 percent by volume nonflat subrounded weakly coherent cemented 2-?-4 millimeter pumice fragments and 5 percent by volume nonflat subangular indurated 2-?-20 millimeter basalt fragments; slightly acid, pH 6.4, bromthymol blue; clear wavy boundary. Lab sample # 02N02362; moist when described; observed in pit, large or quarry
    AE—39 to 59 centimeters (15.4 to 23.2 inches); dark grayish brown (10YR 4/2) broken face, brown (10YR 5/3) broken face, dry; ashy sandy loam; weak medium subangular blocky structure; moderately hard, very friable, slightly sticky, slightly plastic; moderate excavation difficulty; 10.0 very fine roots throughout and 0.5 fine roots throughout; 3.0 very fine low-continuity interstitial and 0.5 very fine low-continuity tubular and 6.0 fine moderate-continuity tubular pores; 3 percent medium prominent spherical strongly coherent cemented black (2.5Y 2.5/1), moist, and very dark grayish brown (2.5Y 3/2), dry, iron-manganese concretions throughout and 5 percent medium prominent irregular moderately coherent cemented strong brown (7.5YR 4/6), moist, and reddish yellow (7.5YR 6/8), dry, iron-manganese nodules throughout; 1 percent by volume nonflat subrounded weakly coherent cemented 2-?-4 millimeter pumice fragments and 5 percent by volume nonflat subangular indurated 2-?-20 millimeter basalt fragments and 5 percent by volume nonflat subrounded strongly coherent cemented 75-?-125 millimeter basalt fragments; slightly acid, pH 6.4, bromthymol blue; clear smooth boundary. Lab sample # 02N02363; wet when described; observed in pit, large or quarry
    E—59 to 65 centimeters (23.2 to 25.6 inches); dark grayish brown (10YR 4/2) broken face, light brownish gray (10YR 6/2) broken face, dry; very gravelly ashy sandy loam; moderate medium subangular blocky structure; moderately hard, friable, slightly sticky, slightly plastic; moderate excavation difficulty; 0.5 very fine roots throughout and 0.1 fine roots throughout; 3.0 very fine low-continuity tubular pores; 20 percent coarse prominent irregular moderately coherent cemented strong brown (7.5YR 4/6), moist, and reddish yellow (7.5YR 6/8), dry, iron-manganese nodules throughout and 25 percent coarse prominent spherical strongly coherent cemented black (2.5Y 2.5/1), moist, and very dark grayish brown (2.5Y 3/2), dry, iron-manganese concretions throughout; 5 percent by volume nonflat subrounded strongly coherent cemented 75-?-125 millimeter basalt fragments and 5 percent by volume nonflat subrounded strongly coherent cemented 2-?-75 millimeter basalt fragments; neutral, pH 6.6, bromthymol blue; abrupt smooth boundary.; wet when described; observed in pit, large or quarry
    2Btss—65 to 77 centimeters (25.6 to 30.3 inches); brown (7.5YR 5/2) broken face, brown (10YR 4/3) broken face, dry; gravelly silty clay; strong coarse columnar parts to strong medium wedge, and strong coarse columnar parts to strong coarse subangular blocky structure; extremely hard, extremely firm, moderately sticky, very plastic; very high excavation difficulty; 0.1 very fine roots throughout; 3.0 very fine low-continuity tubular and 0.8 fine low-continuity irregular pores; 15 percent prominent brown (7.5YR 4/4), moist, and brown (7.5YR 5/3), dry, slickensides (pedogenic) on all faces of peds and 80 percent distinct brown (7.5YR 4/4), moist, and brown (7.5YR 5/3), dry, clay films on all faces of peds; 10 percent coarse prominent irregular noncoherent cemented dark gray (2.5Y 4/1), moist, and light gray (10YR 7/2), dry, iron depletions in matrix and 10 percent coarse prominent spherical very strongly coherent cemented black (2.5Y 2.5/1), moist, and very dark grayish brown (2.5Y 3/2), dry, iron-manganese concretions throughout and 15 percent medium prominent irregular extremely weakly coherent cemented black (2.5Y 2.5/1), moist, and very dark grayish brown (2.5Y 3/2), dry, manganese masses throughout; 2 percent by volume nonflat subrounded strongly coherent cemented 75-?-100 millimeter basalt fragments and 10 percent by volume nonflat subrounded strongly coherent cemented 2-?-75 millimeter basalt fragments; slightly acid, pH 6.4, bromthymol blue; gradual smooth boundary.; wet when described; observed in pit, large or quarry. discontinuous - phpvsfiid 275963; patchy - phpvsfiid 275964; discontinuous - phpvsfiid 275963; patchy - phpvsfiid 275964
    2Bqm—77 to 92 centimeters (30.3 to 36.2 inches); olive brown (2.5Y 4/3) broken face, yellowish brown (10YR 5/4) broken face, dry; cemented material; strong coarse platy structure; extremely hard, slightly rigid, strongly coherent by silica, nonsticky, nonplastic; extremely high excavation difficulty; 0.1 very fine roots in cracks; 3.0 very fine low-continuity tubular and 0.5 fine low-continuity interstitial pores; 5 percent fine distinct irregular strongly coherent cemented black (2.5Y 2.5/1), moist, and very dark grayish brown (10YR 3/2), dry, manganese coatings on faces of peds and 30 percent coarse distinct spherical strongly coherent cemented black (2.5Y 2.5/1), moist, and very dark grayish brown (10YR 3/2), dry, iron-manganese concretions in matrix; 80 percent fine distinct platy strongly coherent cemented brown (10YR 5/3), moist, and pink (7.5YR 7/4), dry, silica masses on faces of peds; 5 percent by volume nonflat subrounded strongly coherent cemented 2-?-30 millimeter basalt fragments; noneffervescent; neutral, pH 6.8, bromthymol blue.; moist when described; observed in pit, large or quarry