IDENTIFIERS

  • Current Taxon Name (Soil Name): Firebrick
  • OSD
  • Series Extent
  • User Site ID: S1996CA005005
  • User Pedon ID: 96CA005005
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 97P0069
  • NCSS Pedon Lab Data NASIS Record ID - 68544
  • Print Date: 9/24/2025

    • 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: 38.2854546
  • Std. Longitude: -120.8935209
  • Datum: WGS84
  • Township: 5N
  • Range: 10E
  • Section: 1
  • PLSS Details: About 1 1/4 miles SE of Buena Vista on Buena Vista Road; about 10 feet west of the edge of the recently cleared area into a stand of manzanita; about 500 feet northeasterly on the dirt road that bisects the central part of the ACEC area in an NE/SW direc
  • Location Description: (NW 1/4 Grid C6).
  • State: California
  • County: CA005—Amador
  • MLRA: 18—Sierra Nevada Foothills
  • Regional Office: SW—Southwest
  • MLRA Soil Survey Area: SW-SON—Sonora, California
  • Non-MLRA Soil Survey Area: CA628—Amador Area, California
  • 7.5 Minute USGS Quad: 38120-C8—Ione, California

    • PEDON

  • Describers Name: Terry D. Cook and William Westerling.
  • Current Taxonomic Class: Loamy, mixed, semiactive, thermic, shallow Typic Haploxerults
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: soil survey inventory
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 5
  • Correlated Information:
  • Soil Name - Firebrick
  • PSC - 10 to 38 cm.
  • Classificaton Date - 1/23/2024
  • Classifier - Cathy Scott
  • Soil Taxonomic Edition - thirteenth edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - UNNAMED
  • Taxonomic Class - Clayey, kaolinitic Typic Haploxerults
  • PSC - 28 to 38 cm.
  • Classificaton Date - 5/3/1996
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: alluvium and/or sandstone
  • Landscape: hills
  • Landform: terrace
  • Slope Position: on a slope
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: medium
  • Drainage Class: well
  • Bedrock: moderately coherent sandstone, unspecified at 38cm
  • Surface Fragments: 1.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/3/1996 (actual site observation date)
  • Air Photo ID: 10-2-5
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - other
  • 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

    bedrock, paralithic

    moderately coherent

    38 - 188

    - 150 -

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

    ochric epipedon

    argillic horizon

    abrupt textural change

    paralithic materials

    paralithic contact

    0—10

    10—38

    28—

    38—188

    38—

    —10—

    —28—

    —-

    —150—

    —-
    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

    —

    —

    113

    —

    270

    500

    —

    —

    16

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 10 centimeters (0.0 to 3.9 inches); reddish brown (5YR 4/3), dark reddish brown (5YR 3/3), moist; gravelly sandy loam; 76 percent sand; 18 percent silt; 7 percent clay; weak medium and coarse subangular blocky parts to weak medium and coarse granular structure; slightly hard, very friable, slightly sticky, slightly plastic; 3.0 very fine roots and 0.5 medium and coarse roots and 0.5 fine roots; 3.0 very fine and fine tubular and 3.0 very fine interstitial pores; 5 percent by volume nonflat subrounded very strongly coherent cemented 75-162-250 millimeter ironstone nodules fragments and 20 percent by volume nonflat subrounded very strongly coherent cemented 2-39-75 millimeter ironstone nodules fragments; very strongly acid, pH 4.5, hellige-truog; clear smooth boundary. Lab sample # 97P00417. 20 percent subrounded and rounded petroplinthitic and few quartzitic gravel 2 mm to 3 inches in size.
    Bt1—10 to 28 centimeters (3.9 to 11.0 inches); reddish brown (5YR 5/4), reddish brown (5YR 4/4), moist; sandy loam; 72 percent sand; 15 percent silt; 13 percent clay; weak medium and coarse subangular blocky structure; very friable, slightly sticky, slightly plastic; 0.5 medium and coarse roots and 0.5 fine roots; 3.0 very fine and fine tubular pores; 10 percent clay films on sand and gravel; fragments; very strongly acid, pH 5.0, hellige-truog; clear wavy boundary. Lab sample # 97P00418. continuous - phpvsfiid 183231; continuous - phpvsfiid 183231
    Bt2—28 to 38 centimeters (11.0 to 15.0 inches); reddish yellow (5YR 6/6), 20 percent pinkish gray (5YR 6/2) and 80 percent yellowish red (5YR 5/6), moist; sandy clay; 48 percent sand; 6 percent silt; 46 percent clay; weak fine and medium subangular blocky structure; very friable, slightly sticky, moderately plastic; 0.1 fine and medium roots and 0.1 coarse roots; 3.0 very fine and fine tubular pores; 10 percent clay films in root channels and/or pores and 75 percent clay films on faces of peds and in pores and 75 percent clay films on sand and gravel; fragments; extremely acid, pH 4.1, hellige-truog; abrupt wavy boundary. Lab sample # 97P00419. continuous - phpvsfiid 183232; continuous - phpvsfiid 183233; continuous - phpvsfiid 183234; continuous - phpvsfiid 183232; continuous - phpvsfiid 183233; continuous - phpvsfiid 183234; Channels or streaks of pinkish gray (5YR 6/2 moist).
    2Crt—38 to 75 centimeters (15.0 to 29.5 inches); pink (7.5YR 7/4), pale brown (10YR 6/3), moist; bedrock; 69 percent sand; 6 percent silt; 25 percent clay; 5 percent white (10YR 8/1) fine dendritic and 5 percent grayish brown (10YR 5/2) fine dendritic and 5 percent dark grayish brown (10YR 4/2) fine dendritic and 5 percent gray (10YR 6/1) fine dendritic and 10 percent reddish yellow (7.5YR 6/6) medium irregular and 10 percent reddish yellow (7.5YR 7/6) medium irregular and 10 percent red (2.5YR 4/6) medium irregular and 10 percent reddish yellow (7.5YR 6/6) medium irregular and 10 percent strong brown (7.5YR 5/8) medium irregular and 10 percent red (2.5YR 4/6) medium irregular mottles; massive; very hard, firm, slightly sticky, moderately plastic; 0.5 fine roots in cracks; 10 percent clay films on faces of peds; fragments; extremely acid, pH 4.0, hellige-truog; gradual wavy boundary. Lab sample # 97P00420. White and gray (10YR 8/1, 5/2) root channels (dry), and dark grayish brown and gray (10YR 4/2, 6/1) root channels (moist).; continuous - phpvsfiid 183235; continuous - phpvsfiid 183235
    3Bv1—75 to 142 centimeters (29.5 to 55.9 inches); 70 percent light yellowish brown (10YR 6/4) and 30 percent yellowish brown (10YR 5/6) and yellowish brown (10YR 5/4), brownish yellow (10YR 6/6) and dark yellowish brown (10YR 4/6) and dark yellowish brown (10YR 4/4), moist; sandy clay loam; 60 percent sand; 10 percent silt; 30 percent clay; massive; very hard, firm, slightly sticky, moderately plastic; fragments; extremely acid, pH 4.0, hellige-truog; clear irregular boundary. Lab sample # 97P00421
    4Bv2—142 to 188 centimeters (55.9 to 74.0 inches); 80 percent weak red (10R 5/3) and 20 percent white (10YR 8/1), weak red (10R 5/3) and white (10YR 8/1), moist; gravelly clay loam; 37 percent sand; 28 percent silt; 36 percent clay; massive; extremely hard, extremely firm*, slightly sticky, moderately plastic; fragments; extremely acid, pH 4.0, hellige-truog. Lab sample # 97P00422. Streaks or patches of brownish yellow (10YR 6/6).