IDENTIFIERS

  • Current Taxon Name (Soil Name): Rockyhole
  • OSD
  • Series Extent
  • User Site ID: 07OR0353144
  • User Pedon ID: S2012OR035006
  • Vegetation Plot ID: 07OR0353144
  • User Site Association ID: OR683 point data
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 12N8336
  • Print Date: 4/19/2025

    • 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: 42.6171667
  • Std. Longitude: -121.7695556
  • Datum: WGS84
  • Township: 34 S
  • Range: 8E
  • Section: 21
  • PLSS Details: about 120 feet south and 2460 feet west of the northeast corner of
  • Location Description: About 5.5 miles northeast of the town of Chiloquin; about 1,000 feet north of Williamson River Road.
  • Map Unit: 1391—Rockyhole-Maset-Nuss complex, 20 to 40 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-E7—Chiloquin, Oregon

    • PEDON

  • Describers Name: Nicita, Eric
  • Current Taxonomic Class: Ashy over loamy-skeletal, glassy over isotic, frigid Alfic Vitrixerands
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: NASIS
  • Correlated Information:
  • Soil Name - Rockyhole
  • PSC - 9 to 109 cm.
  • Classificaton Date - 12/26/2024
  • Classifier - Gebauer, Chris
  • Soil Taxonomic Edition - thirteenth edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: volcanic ash over colluvium derived from basalt and/or andesite
  • Landscape: lava plateau
  • Landform: hill
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Complexity: complex
  • Slope Shape Across: concave
  • Slope Shape Down: linear
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

  • Other Vegetative Class: CPS211 - Pinus ponderosa/Purshia tridentata/Festuca idahoensis—Forested Plant Associations of the Oregon East Cascades

    • SITE OBSERVATION

  • Observation Date: 11/1/2007 (actual site observation date)
  • Data Collector: Nicita, Eric
  • Plant Association Name: PIPO/PUTR2/FEID
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - conifers
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Water Properties:
  • Water pH Method - pH indicator solutions
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    ACOC3

    ARPA6

    BROMU

    CAIN9

    CLARK

    COPA3

    ELEL5

    GADI2

    MEAL6

    PIPO

    PLAGI

    PTAN2

    PUTR2

    Achnatherum occidentale

    Arctostaphylos patula

    Bromus

    Carex inops

    Clarkia

    Collinsia parviflora

    Elymus elymoides

    Gayophytum diffusum

    Mentzelia albicaulis

    Pinus ponderosa

    Plagiobothrys

    Pterospora andromedea

    Purshia tridentata

    western needlegrass

    greenleaf manzanita

    brome

    long-stolon sedge

    clarkia

    maiden blue eyed Mary

    squirreltail

    spreading groundsmoke

    whitestem blazingstar

    ponderosa pine

    popcornflower

    woodland pinedrops

    antelope bitterbrush

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

    ochric epipedon

    andic soil properties

    volcanic glass

    cambic horizon

    lithologic discontinuity

    argillic horizon

    0—20

    9—67

    9—67

    20—89

    67—

    89—200

    —20—

    —58—

    —58—

    —69—

    —-

    —111—
    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

    25

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    1362.5

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    110

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    Oi—0 to 3 centimeters (0.0 to 1.2 inches); slightly decomposed plant material; fragments; abrupt smooth boundary.; dry when described; observed in pit, small
    Oe—3 to 9 centimeters (1.2 to 3.5 inches); moderately decomposed plant material; fragments; abrupt smooth boundary.; dry when described; observed in pit, small
    A—9 to 20 centimeters (3.5 to 7.9 inches); brown (10YR 4/3) broken face, very dark brown (10YR 2/2) broken face, moist; gravelly ashy loamy coarse sand; 78 percent sand; 72 percent silt; 4 percent clay; weak fine granular structure; soft, very friable, noncoherent, nonsticky, nonplastic; low excavation difficulty; many (9.0) very fine roots and common (3.0) medium roots and common (2.0) fine roots and few (0.2) coarse roots; many (5.0) very fine interstitial and few (0.5) fine interstitial pores; 5 percent by volume nonflat subangular indurated 2-40-75 millimeter basalt fragments and 5 percent by volume nonflat subangular indurated 75-160-250 millimeter basalt fragments and 10 percent by volume nonflat subrounded moderately coherent cemented 2-4-20 millimeter pumice fragments; noneffervescent, by hcl, 1n; slightly acid, pH 6.2, pH indicator solutions; clear smooth boundary. Lab sample # 12N05017; moist when described; observed in pit, small
    AB—20 to 48 centimeters (7.9 to 18.9 inches); yellowish brown (10YR 5/4) broken face, brown (10YR 4/3) broken face, moist; ashy loamy coarse sand; 83 percent sand; 14 percent silt; 3 percent clay; weak medium granular structure; soft, very friable, noncoherent, nonsticky, nonplastic; low excavation difficulty; many (9.0) very fine roots and common (3.0) medium roots and common (2.0) fine roots and common (2.0) coarse roots; common (2.0) very fine interstitial and few (0.5) fine interstitial pores; 1 percent by volume nonflat subangular indurated 2-40-75 millimeter basalt fragments and 10 percent by volume nonflat subrounded moderately coherent cemented 2-4-20 millimeter pumice fragments; noneffervescent, by hcl, 1n; slightly acid, pH 6.2, pH indicator solutions; gradual smooth boundary. Lab sample # 12N05018; moist when described; observed in pit, small
    Bw1—48 to 67 centimeters (18.9 to 26.4 inches); yellowish brown (10YR 5/4) broken face, brown (10YR 5/3) broken face, moist; ashy coarse sand; 93 percent sand; 5 percent silt; 2 percent clay; weak medium subangular blocky structure; soft, very friable, noncoherent, nonsticky, nonplastic; low excavation difficulty; many (12.0) very fine roots and few (0.5) very coarse roots and many (6.0) medium roots and common (2.0) fine roots and common (2.0) coarse roots; common (2.0) very fine interstitial and few (0.5) fine interstitial pores; 1 percent by volume nonflat subangular indurated 2-40-75 millimeter basalt fragments and 10 percent by volume nonflat subrounded moderately coherent cemented 2-4-20 millimeter pumice fragments; noneffervescent, by hcl, 1n; slightly acid, pH 6.4, pH indicator solutions; abrupt wavy boundary. Lab sample # 12N05019; dry when described; observed in pit, small
    2Bw2—67 to 89 centimeters (26.4 to 35.0 inches); pale brown (10YR 6/3) broken face, brown (10YR 4/3) broken face, moist; extremely cobbly loam; 51 percent sand; 27 percent silt; 22 percent clay; moderate medium subangular blocky structure; moderately hard, friable, noncoherent, moderately sticky, slightly plastic; high excavation difficulty; common (3.0) very fine roots and common (2.0) medium roots and few (0.5) fine roots and few (0.5) coarse roots; common (2.0) very fine dendritic tubular and many (5.0) very fine interstitial pores; 5 percent by volume nonflat subangular indurated 250-425-600 millimeter basalt fragments and 20 percent by volume nonflat subangular indurated 2-40-75 millimeter basalt fragments and 50 percent by volume nonflat subangular indurated 75-160-250 millimeter basalt fragments; noneffervescent, by hcl, 1n; neutral, pH 6.6, pH indicator solutions; abrupt smooth boundary.; dry when described; observed in pit, small
    2Bt—89 to 200 centimeters (35.0 to 78.7 inches); pale brown (10YR 6/3) broken face, brown (10YR 4/3) broken face, moist; extremely cobbly clay loam; 33 percent sand; 38 percent silt; 29 percent clay; moderate medium subangular blocky structure; moderately hard, friable, noncoherent, moderately sticky, slightly plastic; high excavation difficulty; few (0.5) very fine roots and few (0.1) medium roots and few (0.1) fine roots; many (5.0) very fine interstitial and few (0.5) fine interstitial pores; 35 percent distinct dark yellowish brown (10YR 4/4), moist, clay films on all faces of peds and 35 percent distinct dark yellowish brown (10YR 4/4), moist, clay films on rock fragments; 5 percent by volume nonflat subangular indurated 250-425-600 millimeter basalt fragments and 30 percent by volume nonflat subangular indurated 2-40-75 millimeter basalt fragments and 40 percent by volume nonflat subangular indurated 75-160-250 millimeter basalt fragments; noneffervescent, by hcl, 1n; neutral, pH 6.6, pH indicator solutions. Lab sample # 12N05020; moist when described; observed in pit, small