IDENTIFIERS

  • Current Taxon Name (Soil Name): Carville
  • OSD
  • Series Extent
  • User Site ID: LA095-Carville-TP
  • User Pedon ID: S2000LA095002
  • Vegetation Plot ID: LA095-Carville-TP
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 01N0364
  • NCSS Pedon Lab Data NASIS Record ID - 13570
  • Print Date: 11/12/2024

    • 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: 30.0767231
  • Std. Longitude: -90.4743729
  • Datum: WGS84
  • Location Description: from the intersection of U.S. Highways 51 and 61 in LaPlace, Louisiana, 0.85 mile northeast on U.S. Highway 51, then 750 feet northwest on field road, then 400 feet southwest into field.
  • Map Unit: CvA—Carville silt loam, 0 to 1 percent slopes
  • State: Louisiana
  • County: LA095—St. John the Baptist
  • MLRA: 131—Southern Mississippi Valley Alluvium
  • Regional Office: 7—Auburn, AL
  • Non-MLRA Soil Survey Area: LA601—St. James and St. John the Baptist Parishes, LouisianaLA095—St. John the Baptist Parish, Louisiana
  • 7.5 Minute USGS Quad: 30090-A4—Laplace, Louisiana

    • PEDON

  • Describers Name: JDS, CMG
  • Current Taxonomic Class: Coarse-silty, mixed, superactive, nonacid, thermic Fluvaquentic Endoaquepts
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 2
  • Correlated Information:
  • Soil Name - Carville
  • Classificaton Date - 9/15/2005
  • Sampled As Information:
  • Soil Name - Carville
  • Classificaton Date - 12/11/2000
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: silty alluvium
  • Landscape: delta plain
  • Landform: natural levee
  • Slope Shape Down: convex
  • Runoff: very low
  • Drainage Class: somewhat poorly
  • Geology: Holocene Age Fluvial Sediments formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 12/11/2000 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - hayland
  • 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

    CASC11

    CYDA

    Carex scoparia

    Cynodon dactylon

    broom sedge

    Bermudagrass

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

    ochric epipedon

    cambic horizon

    0—20

    20—110

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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

    1

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    Ap1—0 to 9 centimeters (0.0 to 3.5 inches); dark grayish brown (10YR 4/2) very fine sandy loam; 11 percent clay; weak medium granular structure; very friable, slightly sticky, nonplastic; 30.0 fine roots throughout; 2 percent fine distinct irregular dark yellowish brown (10YR 4/4) masses of oxidized iron throughout; fragments; moderately alkaline, pH 8.0, hellige-truog; gradual smooth boundary. Lab sample # 01N02188
    Ap2—9 to 20 centimeters (3.5 to 7.9 inches); dark grayish brown (10YR 4/2) very fine sandy loam; 13 percent clay; weak fine subangular blocky structure; very friable, slightly sticky, nonplastic; 20.0 fine roots throughout; 2.0 fine high-continuity tubular pores; 5 percent fine distinct irregular dark yellowish brown (10YR 4/4) masses of oxidized iron throughout; fragments; moderately alkaline, pH 8.0, hellige-truog; gradual smooth boundary. Lab sample # 01N02189
    Bw1—20 to 32 centimeters (7.9 to 12.6 inches); dark grayish brown (10YR 4/2) very fine sandy loam; 14 percent clay; moderate fine subangular blocky structure; very friable, slightly sticky, nonplastic; 15.0 fine roots throughout; 2.0 fine high-continuity tubular pores; 2 percent fine prominent dendritic brown (7.5YR 4/4) masses of oxidized iron lining pores and 2 percent medium distinct irregular dark gray (2.5Y 4/1) iron depletions throughout and 8 percent fine distinct irregular dark yellowish brown (10YR 4/4) masses of oxidized iron throughout; fragments; moderately alkaline, pH 8.0, hellige-truog; gradual smooth boundary. Lab sample # 01N02190
    Bw2—32 to 51 centimeters (12.6 to 20.1 inches); grayish brown (10YR 5/2) very fine sandy loam; 15 percent clay; weak fine subangular blocky structure; very friable, slightly sticky, nonplastic; 10.0 fine roots throughout; 1.0 medium high-continuity tubular and 2.0 fine high-continuity tubular pores; 3 percent fine distinct irregular brown (7.5YR 4/3) masses of oxidized iron throughout and 5 percent fine distinct dendritic brown (7.5YR 4/4) masses of oxidized iron lining pores; fragments; moderately alkaline, pH 8.0, hellige-truog; gradual smooth boundary. Lab sample # 01N02191
    Bw3—51 to 72 centimeters (20.1 to 28.3 inches); grayish brown (10YR 5/2) very fine sandy loam; 15 percent clay; weak fine subangular blocky structure; very friable, slightly sticky, nonplastic; 10.0 fine roots throughout; 1.0 medium high-continuity tubular and 2.0 fine high-continuity tubular pores; 5 percent fine prominent cylindrical strong brown (7.5YR 4/6) masses of oxidized iron lining pores and 10 percent medium distinct irregular dark yellowish brown (10YR 4/4) masses of oxidized iron throughout; fragments; moderately alkaline, pH 8.0, hellige-truog; gradual smooth boundary. Lab sample # 01N02192
    Bg1—72 to 100 centimeters (28.3 to 39.4 inches); dark gray (10YR 4/1) very fine sandy loam; 17 percent clay; weak fine subangular blocky structure; very friable, slightly sticky, nonplastic; 10.0 fine roots throughout; 1.0 medium high-continuity tubular and 1.0 fine high-continuity tubular pores; 5 percent fine prominent cylindrical strong brown (7.5YR 4/6) masses of oxidized iron lining pores and 15 percent medium distinct platy dark yellowish brown (10YR 4/4) masses of oxidized iron throughout; fragments; moderately alkaline, pH 8.0, hellige-truog; clear smooth boundary. Lab sample # 01N02193
    Bg2—100 to 110 centimeters (39.4 to 43.3 inches); gray (10YR 5/1) very fine sandy loam; 19 percent clay; weak fine subangular blocky structure; very friable, slightly sticky, nonplastic; 6.0 fine roots throughout; 2.0 fine high-continuity tubular pores; 1 percent medium prominent cylindrical dark reddish brown (5YR 3/4) masses of oxidized iron lining pores and 30 percent medium prominent cylindrical yellowish red (5YR 4/6) masses of oxidized iron lining pores; 1 percent by volume flat ? to 2-? millimeter shell fragments fragments; moderately alkaline, pH 8.0, hellige-truog; abrupt smooth boundary. Lab sample # 01N02194
    Cg—110 to 140 centimeters (43.3 to 55.1 inches); dark greenish gray (5GY 4/1) very fine sandy loam; 20 percent clay; massive; very friable, slightly sticky, nonplastic; 3.0 fine roots throughout; 2.0 fine high-continuity tubular pores; 3 percent fine prominent cylindrical reddish brown (5YR 4/4) masses of oxidized iron lining pores and 5 percent fine prominent irregular light olive brown (2.5Y 5/4) masses of oxidized iron lining pores; fragments; moderately alkaline, pH 8.0, hellige-truog. Lab sample # 01N02195