IDENTIFIERS

  • Current Taxon Name (Soil Name): Altamont
  • OSD
  • Series Extent
  • User Site ID: 93CA011004
  • User Pedon ID: 93CA011004
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 94P0052
  • Print Date: 11/13/2024

    • 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: 39.3455556
  • Std. Longitude: -122.3230556
  • Datum: WGS84
  • Map Unit: 215—Altamont-Sehorn complex, 15 to 30 percent slopes
  • State: California
  • County: CA011—Colusa
  • MLRA: 15—Central California Coast Range
  • Non-MLRA Soil Survey Area: CA011—Colusa County, California
  • 7.5 Minute USGS Quad: 39122-C3—Sites, California

    • PEDON

  • Describers Name: Joe Jahnke, Dean Burkett
  • Current Taxonomic Class: Fine, smectitic, thermic Chromic Haploxererts
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: research site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Altamont
  • PSC - 25 to 89 cm.
  • Classificaton Date - 11/9/2005
  • Soil Taxonomic Edition - seventh edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Altamont High
  • Classificaton Date - 9/21/1993
  • Dynamic Soil Properties:
  • Erosion Class - 3
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: hills
  • Landform: hillside
  • Anthropogenic Feature: leveled land
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Position: middle third
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: low
  • Drainage Class: well
  • Flooding: none flooding
  • Bedrock: s moderate weathered mudstone with <10 and a strike of 190 degrees and a dip of 90 to 90 degrees
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/21/1993 (actual site observation date)
  • Microrelief Elevation: 0
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • 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

    35

    278

    163

    450

    —

    315

    170

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    Colusa SW

    —
    A—0 to 7 centimeters (0.0 to 2.8 inches); light olive brown (2.5Y 5/3) exterior, olive brown (2.5Y 4/3) exterior, moist; clay; 42 percent clay; moderate coarse subangular blocky parts to weak fine subangular blocky structure; hard, firm, noncoherent, moderately sticky, moderately plastic; deformable; 5.0 very fine roots throughout; 3.0 very fine interstitial pores; fragments; noneffervescent, by hcl, 1n; slightly acid, pH 6.5, hellige-truog; clear smooth boundary. Lab sample # 94P0443; observed in trench. Polygon #1E. Surface initiated cracks that are 1/2-2 cm wide and 5-8 cm apart.
    Bw—7 to 23 centimeters (2.8 to 9.1 inches); light olive brown (2.5Y 5/3) exterior, olive brown (2.5Y 4/3) exterior, moist; clay; 45 percent clay; strong very coarse prismatic parts to moderate very coarse angular blocky structure; very hard, very firm, noncoherent, moderately sticky, moderately plastic; deformable; 3.0 very fine roots throughout; 0.5 very fine discontinuous tubular pores; 20 percent prominent pressure faces on faces of peds; fragments; noneffervescent, by hcl, 1n; neutral, pH 7.0, hellige-truog; abrupt smooth boundary. Lab sample # 94P0444; observed in trench. Polygon #31. Surface initiated cracks that are 1/2-2 cm wide and 5-8 cm apart. This polygon is also on north face of transects.; patchy - phpvsfiid 207372; patchy - phpvsfiid 207372
    Bss1—23 to 58 centimeters (9.1 to 22.8 inches); light olive brown (2.5Y 5/3) exterior, olive brown (2.5Y 4/3) exterior, moist; clay; 48 percent clay; strong very coarse prismatic parts to moderate very coarse angular blocky, and strong very coarse angular blocky structure; very hard, very firm, noncoherent, moderately sticky, moderately plastic; deformable; 0.5 very fine roots throughout; 0.5 very fine discontinuous tubular pores; 30 percent prominent pressure faces on faces of peds and 50 percent prominent slickensides (pedogenic) on faces of peds; 3 percent by volume angular 2-39-75 millimeter shale, unspecified fragments; noneffervescent, by hcl, 1n; neutral, pH 7.0, hellige-truog; abrupt wavy boundary. Lab sample # 94P0445; observed in trench. Polygon #38. Surface initiated cracks that are 1-2 cm wide and 20-28 cm apart.; discontinuous - phpvsfiid 207373; discontinuous - phpvsfiid 207374; discontinuous - phpvsfiid 207373; discontinuous - phpvsfiid 207374
    Bss1(C)—25 to 63 centimeters (9.8 to 24.8 inches); fragments. Lab sample # 94P0451; observed in trench. Polygon #40. Satellite to S93CA-11-3-4.
    Bss2(C)—46 to 77 centimeters (18.1 to 30.3 inches); fragments. Lab sample # 94P0450; observed in trench. Polygon #38. Satellite to S93CA-11-3-3.
    Bss2—58 to 89 centimeters (22.8 to 35.0 inches); light olive brown (2.5Y 5/3) exterior, olive brown (2.5Y 4/3) exterior, moist; clay; 48 percent clay; strong very coarse prismatic parts to moderate very coarse angular blocky, and strong very coarse angular blocky structure; very hard, very firm, noncoherent, moderately sticky, moderately plastic; deformable; 0.5 very fine roots throughout; 0.5 very fine discontinuous tubular pores; 30 percent prominent pressure faces on faces of peds and 60 percent prominent slickensides (pedogenic) on faces of peds; 7 percent by volume angular 2-39-75 millimeter shale, unspecified fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.0, hellige-truog; clear wavy boundary. Lab sample # 94P0446; observed in trench. Polygon #40. Surface initiated cracks that are 1-2 cm wide and 20-28 cm apart.; discontinuous - phpvsfiid 207375; discontinuous - phpvsfiid 207376; discontinuous - phpvsfiid 207375; discontinuous - phpvsfiid 207376
    BC1—89 to 109 centimeters (35.0 to 42.9 inches); light olive brown (2.5Y 5/3) exterior, olive brown (2.5Y 4/4) exterior, moist; very gravelly clay loam; 38 percent clay; moderate medium subangular blocky structure; hard, firm, noncoherent, moderately sticky, moderately plastic; deformable; 0.5 very fine roots throughout; 0.5 very fine discontinuous tubular pores; 40 percent by volume angular 2-39-75 millimeter shale, unspecified fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.0, hellige-truog; clear wavy boundary. Lab sample # 94P0447; observed in trench. Polygon #39.
    BC2—109 to 125 centimeters (42.9 to 49.2 inches); light yellowish brown (2.5Y 6/4) exterior, olive brown (2.5Y 4/4) exterior, moist; very gravelly clay loam; 38 percent clay; moderate medium subangular blocky structure; hard, firm, noncoherent, moderately sticky, moderately plastic; deformable; 0.5 very fine roots throughout; 0.5 very fine discontinuous tubular pores; 50 percent by volume angular 2-39-75 millimeter shale, unspecified fragments; noneffervescent, by hcl, 1n; moderately alkaline, pH 8.0, hellige-truog; abrupt wavy boundary. Lab sample # 94P0448; observed in trench. Polygon #35.
    R—125 to 168 centimeters (49.2 to 66.1 inches); strong brown (7.5YR 5/6) coats and black (N 2/0) and manganese or iron-manganese stains and clay films on rock fragments; angular 2-39-75 millimeter shale, unspecified fragments; noneffervescent, by hcl, 1n. Lab sample # 94P0449; observed in trench. Polygon #30B.