IDENTIFIERS

  • Current Taxon Name (Soil Name): Alahapa
  • OSD
  • Series Extent
  • User Site ID: S1997HI001001A
  • User Pedon ID: 97HI001001A
  • Vegetation Plot ID: S1997HI001001A
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 98P0130
  • NCSS Pedon Lab Data NASIS Record ID - 10402
  • Print Date: 11/24/2024

    • 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: 19.4131947
  • Std. Longitude: -155.3310547
  • Datum: WGS84
  • Location Description: Island of Hawaii, Hawaii Volcanoes National Park, Hawaii; Turn west on ranch access road immediately southwest of marker 34 on State Hwy 11;park at gate; Alahapa soil 50 feet on the left and slightly northeast of State Hwy 11
  • State: Hawaii
  • County: HI001—Hawaii
  • MLRA: 161—Lava Flows and Rock Outcrops
  • 7.5 Minute USGS Quad: THI0081—Kilauea Crater, Hawaii

    • PEDON

  • Describers Name: KH
  • Current Taxonomic Class: Fragmental, mixed, isothermic Typic Ustivitrands
  • Current Taxon Kind: series
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Alahapa
  • Classificaton Date - 7/23/2007
  • Moisture Class - ustic
  • Sampled As Information:
  • Soil Name - Alahapa
  • Taxonomic Class - Fragmental, mixed, isothermic Udic Ustorthent
  • Taxon Kind - series
  • Classificaton Date - 12/1/1997
  • Moisture SUBClass - udic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Drainage Class: somewhat excessively
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 12/1/1997 (actual site observation date)
  • Surface Cover Properties:
  • 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

    CAREX

    STTA

    VADE2

    Carex

    Styphelia tameiameiae

    Vaccinium dentatum

    sedge

    pukiawe

    ohelo

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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

    6

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    1113

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    114

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    16

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    16

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    A/2C1—0 to 8 centimeters (0.0 to 3.1 inches);, very dark grayish brown (2.5Y 3/2) and light olive brown (2.5Y 5/4), dry; extremely stony sandy loam; moderate medium platy structure; slightly hard, friable, nonsticky, nonplastic; 3.0 very fine and fine roots throughout; 3.0 very fine and fine interstitial pores; 5 percent by volume angular 600-?-? millimeter aa lava fragments and 10 percent by volume angular 2-39-75 millimeter aa lava fragments and 20 percent by volume angular 75-162-250 millimeter aa lava fragments and 40 percent by volume angular 250-425-600 millimeter aa lava fragments; very strongly acid, pH 4.8, hellige-truog; abrupt wavy boundary. 15% hard lapilli, 1/8 to 3/8 inches in diameter. (Thickness of A horizon 1 to 5 inches.) Discontinuous pockets of stratified material: occur in most pedons in the upper horizons. Lapilli: occur in most pedons in the upper horizons. Diagnostic horizons and features recognized in this pedon are: Ochric epipedon - the zone from the soil surface to a depth of about 1 inch. The A horizon; Hue: 10YR, 5YR, or 2Y; Chroma: 2 to 6 moist; Texture: sandy loam, fine sandy loam, or loam; structure: platy (approximately 90 percent) or cemented crust (approximately 10 percent). Soil reaction: strongly acid to medium acid. Coarse fragments: average 50 to 90 percent.
    C/2C2—8 to 43 centimeters (3.1 to 16.9 inches);, very dark grayish brown (10YR 3/2) and grayish brown (2.5Y 5/2), dry; extremely cobbly loam; weak medium subangular blocky structure; slightly hard, friable, nonsticky, nonplastic; 3.0 very fine and fine roots throughout and 0.5 medium and coarse roots throughout; 3.0 very fine and fine interstitial pores; 5 percent by volume angular 250-425-600 millimeter aa lava fragments and 25 percent by volume angular 2-39-75 millimeter aa lava fragments and 60 percent by volume angular 75-162-250 millimeter aa lava fragments; neutral, pH 6.8, hellige-truog; abrupt broken boundary. Lab sample # 98P00857. 15% hard lapilli, 1/8 inch to 3/8 inches in diameter; few gravel size pieces of reticulite. Discontinuous pockets of stratified material:occur in most pedons in the upper horizons. Lapilli: occurs in most pedons in the upper horizons. The C horizon; Hue:10YR, 7.5YR, 5YR, or N; Chroma: 0 to 5 moist; Value: 1 to 3 moist; Texture: fine loamy sand, fine sand, sand, or coarse sand; Structure: platy, stratified, massive, or single grained; Reticulite: occur in some pedons in the upper C horizons.
    2C3—43 to 91 centimeters (16.9 to 35.8 inches);, black (10YR 2/1) and dark gray (10YR 4/1), dry; extremely cobbly sand; single grain; loose, loose, nonsticky, nonplastic; 0.5 very fine and fine roots throughout; 21.0 very fine to medium interstitial pores; 5 percent by volume angular 250-425-600 millimeter aa lava fragments and 40 percent by volume angular 75-162-250 millimeter aa lava fragments and 40 percent by volume angular 2-39-75 millimeter aa lava fragments; neutral, pH 6.8, hellige-truog; gradual wavy boundary. 1 percent broken strands of Pele's hair; scattered throughout horizon. The C horizon; Hue: 10YR, 7.5YR, 5YR, 2.5YR, or N; Chroma: 0 to 5 moist; Value: 1 to 3 moist; Texture: fine loamy sand, fine sand, or coarse sand; Structure: platy, stratified, massive, or single grained; Reticulite: occur in some pedons in the upper C horizons.
    2C4—91 to 152 centimeters (35.8 to 59.8 inches);, dark brown (7.5YR 3/2) and dark brown (7.5YR 3/2), dry; extremely stony coarse sand; single grain; loose, loose, nonsticky, nonplastic; 0.5 very fine and fine roots throughout; 21.0 very fine to medium interstitial pores; 15 percent by volume angular 75-162-250 millimeter aa lava fragments and 40 percent by volume angular 250-425-600 millimeter aa lava fragments and 45 percent by volume angular 2-39-75 millimeter aa lava fragments; neutral, pH 6.8, hellige-truog; gradual wavy boundary. Combined thickness of C horizons is more than 60 inches. The C horizon; Hue: 10YR, 7.5YR, 5YR, 2.5YR, or N; Chroma: 0 to 5 moist; Value: 1 to 3 moist; Texture: fine loamy sand, fine sand, sand, or coarse sand; Structure: platy, stratified, massive, or single grained; Reticulite: occur in some pedons in the upper C horizons.