IJAM.json

{
  "SERIES": "IJAM",
  "STATUS": "Established Series",
  "BYREV": "CLN-SEB-KBH-AKS",
  "REVDATE": "08/2025",
  "STATES": "TX",
  "OVERVIEW": "Depth class: Very deep\nDrainage class: Poorly drained\nFlooding frequency and duration: Rarely, brief\nSaturated hydraulic conductivity: Low\nShrink-swell potential: High\nParent material: Clayey dredge spoils\nSlope: 0 to 3 percent\nMean annual air temperature: 21 degrees C (70 degrees F)\nMean annual precipitation: 1443 millimeters (56 inches)",
  "TAXONOMIC CLASS": {
    "section": "TAXONOMIC CLASS",
    "content": "TAXONOMIC CLASS: Fine, dredgic, smectitic, nonacid, hyperthermic Sodic Endoaquents"
  },
  "TYPICAL PEDON": {
    "section": "TYPICAL PEDON",
    "content": "TYPICAL PEDON: Ijam clay on a gently sloping dredge spoil at an elevation of 1 meter. (Colors are for moist soil unless otherwise stated.)\n^Ag--0 to 20 centimeters; dark gray (10YR 4/1) clay; massive; very hard, very firm, very sticky, very plastic; many fine roots; fragments; strong effervescence (HCl); moderately alkaline (pH 8.0); diffuse smooth boundary. (Ag horizon is 5 to 25 centimeters thick.)\n^Cg--20 to 200centimeters; dark gray (5Y 4/1) stratified clay; few thin discontinuous strata or lens of sandy clay loam or fine sandy loam; massive; very hard, very firm, very sticky, very plastic; few very fine roots; 1 percent medium prominent yellowish brown (10YR 5/4) iron-manganese concretions and 15 percent medium distinct dark brown (10YR 3/3) masses of oxidized iron; 1 percent medium carbonate concretions; 5 percent fine shell fragments; strong effervescence (HCl); moderately alkaline (pH 8.0)."
  },
  "TYPE LOCATION": {
    "section": "TYPE LOCATION",
    "content": "TYPE LOCATION: Chambers County, Texas; From the Anuahuac Boat Ramp, approximately 1.3 kilometers (0.8) miles south-southwest on Detwiler Rd and approximately 10 meters (31 feet) to the west on dredge spoil; USGS quadrangle: Oak Island, Texas\nLatitude: 29.7436556\nLongitude: -94.6947778\nDatum: WGS84\nCoordinate Source: From hand-held GPS"
  },
  "RANGE IN CHARACTERISTICS": {
    "section": "RANGE IN CHARACTERISTICS",
    "content": "RANGE IN CHARACTERISTICS:\nDepth to bedrock: Greater than 200 centimeters\nMoisture regime: Aquic\nHuman-transported material: 0 to 200 centimeters\nReaction throughout: Neutral to strongly alkaline (pH 6.6 to 9.0)\nParticle-size control section (weighted average):\nClay content-37 to 55 percent\n^A Horizon:\nHue-10YR to 5Y\nValue-4 to 7\nChroma-0 to 3\nTexture-loam, clay loam, or clay\nElectrical conductivity (dS/m)-2 to 16\nSodium adsorption ratio-5 to 30\n^C Horizon (where present):\nHue-10YR to 5Y\nValue-4 to 7\nChroma-0 to 6\nTexture-clay loam or clay\nElectrical conductivity (dS/m)-0.5 to 16\nSodium adsorption ratio-8 to 30\n^Cg Horizon:\nHue-2.5Y to 5B\nValue-4 to 7\nChroma-0 to 2\nTexture-loam, clay loam, or clay\nElectrical conductivity (dS/m)- 3 to 16\nSodium adsorption ratio-10 to 30"
  },
  "COMPETING SERIES": {
    "section": "COMPETING SERIES",
    "content": "COMPETING SERIES: There are no series in the same family. Similar soils are the Grassypoint and Tracosa series.\nGrassypoint soils: do not have dredgic, human-transported materials and have reddish subsoils.\nTracosa soils: do not have dredgic, human-transported materials and have yellowish subsoils."
  },
  "GEOGRAPHIC SETTING": {
    "section": "GEOGRAPHIC SETTING",
    "content": "GEOGRAPHIC SETTING:\nParent material: Clayey dredge spoils\nLandscape: Barrier islands and coastal plains\nAnthropogenic feature: Dredge spoils\nSlope: 0 to 3 percent\nMean annual precipitation: 812 to 1575 millimeters (32 to 62 inches)\nMean annual air temperature: 20 to 23 degrees C (68 to 73 degrees F)\nFrost-free period: 300 to 365 days\nElevation: 0 to 3 meters (0 to 10 feet)"
  },
  "GEOGRAPHICALLY ASSOCIATED SOILS": {
    "section": "GEOGRAPHICALLY ASSOCIATED SOILS",
    "content": "GEOGRAPHICALLY ASSOCIATED SOILS:\nThese are the Basford, Harris, Hoeckers, Neel, and Sievers series.\nBasford soils: are on subaqueous landscapes, have subaqueous drainage, and are formed in coarse-loamy soils from dredge deposits.\nHarris soils: occur on lower coastal marshlands, not on anthropogenic landforms, and do not have dredgic human-altered and human-transported materials.\nHoeckers soils: are on subaqueous landscapes, have subaqueous drainage, and have high shell fragment volumes.\nNeel soils: have better drainage throughout and are on slightly higher landscape positions.\nSiever soils: are slightly coarser textured throughout and occur on slightly higher positions on the landscape."
  },
  "DRAINAGE AND PERMEABILITY": {
    "section": "DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY",
    "content": "DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:\nDrainage class: Poorly drained\nSaturated hydraulic conductivity: Low\nFlooding frequency and duration: Rarely, brief\nSeasonal water table: 0 to 58 centimeters\nSurface runoff: Very high"
  },
  "USE AND VEGETATION": {
    "section": "USE AND VEGETATION",
    "content": "USE AND VEGETATION:\nMajor use: Rangeland and wildlife habitat\nVegetation: Salt tolerant species such as gulf cordgrass and common reedgrass"
  },
  "DISTRIBUTION AND EXTENT": {
    "section": "DISTRIBUTION AND EXTENT",
    "content": "DISTRIBUTION AND EXTENT:\nGeneral Area: On barrier islands and mainland marshes near bays along the central coast of Texas\nLand Resource Region: T-Atlantic and Gulf Coast Lowland Forest and Crop Region\nMLRA(s): 150B-Gulf Coast Saline Prairies and 151-Gulf Coast Marsh\nExtent: Moderate"
  },
  "REGIONAL OFFICE": {
    "section": "SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE",
    "content": "SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Special Projects Office"
  },
  "ORIGIN": {
    "section": "SERIES ESTABLISHED",
    "content": "SERIES ESTABLISHED: Chambers County, Texas, 1969"
  },
  "REMARKS": {
    "section": "REMARKS",
    "content": "REMARKS:\nIjam soils were formerly unclassified and mapped as Made land.\nTypical pedon taxonomic features:\nAnthropic epipedon: 0 to 20 centimeters (^A horizon)\nAquic conditions: 0 to 200 centimeters\nHuman-transported materials: 0 to 200 centimeters\nParticle-size control section: 25 to 100 centimeters (^Cg horizons)\nStratification from dredging operations\nTaxonomic version: Keys to Soil Taxonomy, 13th edition (2022)"
  },
  "ADDITIONAL DATA": {
    "section": "ADDITIONAL DATA",
    "content": "ADDITIONAL DATA:\nOSD User Pedon ID: S2010TX0715011\n________________________________________"
  },
  "SITE": [
    [
      {
        "drainage": "poorly",
        "drainage_overview": "poorly"
      }
    ]
  ],
  "HORIZONS": [
    [
      {
        "name": "^Ag",
        "top": 0,
        "bottom": 20,
        "dry_hue": "NA",
        "dry_value": "NA",
        "dry_chroma": "NA",
        "moist_hue": "10YR",
        "moist_value": 4,
        "moist_chroma": 1,
        "texture_class": "clay",
        "structure": "massive",
        "dry_rupture": "hard",
        "moist_rupture": "firm",
        "coherence": "NA",
        "cf_class": "NA",
        "pH": 8,
        "pH_class": "moderately alkaline",
        "eff_class": "strong effervescence",
        "distinctness": "diffuse",
        "topography": "smooth",
        "narrative": "^Ag--0 to 20 centimeters; dark gray (10YR 4/1) clay; massive; very hard, very firm, very sticky, very plastic; many fine roots; fragments; strong effervescence (HCl); moderately alkaline (pH 8.0); diffuse smooth boundary. (Ag horizon is 5 to 25 centimeters thick.)"
      },
      {
        "name": "^Cg",
        "top": 20,
        "bottom": 200,
        "dry_hue": "NA",
        "dry_value": "NA",
        "dry_chroma": "NA",
        "moist_hue": "5Y",
        "moist_value": 4,
        "moist_chroma": 1,
        "texture_class": "fine sandy loam",
        "structure": "massive",
        "dry_rupture": "hard",
        "moist_rupture": "firm",
        "coherence": "NA",
        "cf_class": "NA",
        "pH": 8,
        "pH_class": "moderately alkaline",
        "eff_class": "strong effervescence",
        "distinctness": "NA",
        "topography": "NA",
        "narrative": "^Cg--20 to 200centimeters; dark gray (5Y 4/1) stratified clay; few thin discontinuous strata or lens of sandy clay loam or fine sandy loam; massive; very hard, very firm, very sticky, very plastic; few very fine roots; 1 percent medium prominent yellowish brown (10YR 5/4) iron-manganese concretions and 15 percent medium distinct dark brown (10YR 3/3) masses of oxidized iron; 1 percent medium carbonate concretions; 5 percent fine shell fragments; strong effervescence (HCl); moderately alkaline (pH 8.0)."
      }
    ]
  ]
}