D20 PUUM Megapit Soils Description
| Print Date: Feb 4 2019 | Country: |
| Description Date: Jun 11 2018 | State: Hawaii |
| Describer: Jacqueline Vega | County: Hawaii |
| Site ID: S2018HI001100_MP | MLRA: 162 -- Humid and Very Humid Organic Soils on Lava Flows |
| Site Note: | Soil Survey Area: 2-KEA -- Kealakekua, Hawaii HI801 -- Island of Hawaii Area, Hawaii |
| Pedon ID: S2018HI001100_MP | Map Unit: 602 -- Keamoku stony medial loam, 3 to 10 percent slopes |
| Pedon Note: | Quad Name: Kulani, Hawaii |
| Lab Source ID: KSSL | Std Latitude: 19.5532710 |
| Lab Pedon #: 18N1178 | Std Longitude: 155.3172790 |
| User Transect ID: | |
| Soil Name as Described/Sampled: Keamoku | |
| Classification: Medial-skeletal, amorphic, isomesic Typic Hapludands | Latitude: 19 degrees 33 minutes 11.80 seconds north |
| Soil Name as Correlated: | Longitude: 155 degrees 19 minutes 2.20 seconds west |
| Classification: | Datum: WGS84 |
| Pedon Type: correlates to named soil | UTM Zone: |
| Pedon Purpose: laboratory sampling site | UTM Easting: |
| Taxon Kind: series | UTM Northing: |
| Associated Soils: | |
| Physiographic Division: | Primary Earth Cover: Tree cover |
| Physiographic Province: | Secondary Earth Cover: Tropical |
| Physiographic Section: | Existing Vegetation: |
| State Physiographic Area: | Parent Material: volcanic ash derived from igneous rock over aa lava |
| Local Physiographic Area: | Bedrock Kind: |
| Geomorphic Setting: ash field on mauna loa volcano shield volcano on hawaii island | Bedrock Depth: |
| Upslope Shape: concave | Bedrock Hardness: |
| Cross Slope Shape: linear | Bedrock Fracture Interval: |
| Particle Size Control Section: 0 to 100 cm. | Surface Fragments: 5.0 percent nonflat subangular very strongly cemented 76- to 249-millimeter aa lava fragments and 2.0 percent nonflat subangular very strongly cemented 250- to 599-millimeter aa lava fragments |
| Description origin: NASIS | Description database: KSSL |
| Diagnostic Features: | hemic soil materials 0 to 2 cm. andic soil properties 2 to 90 cm. mollic epipedon 2 to 90 cm. cambic horizon 17 to 90 cm. lithologic discontinuity 17 to 110 cm. |
| Cont. Site ID: S2018HI001100_MP | Pedon ID: S2018HI001100_MP |
| Slope (%) | Elevation (meters) | Aspect (deg) | MAAT (C) | MSAT (C) | MWAT (C) | MAP (mm) | Frost-Free Days | Drainage Class | Slope Length (meters) | Upslope Length (meters) |
| 5.0 | 1,689.3 | 20 | 14.0 | 2,459 | 365 | well |
Oe--0 to 2 centimeters (0.0 to 0.8 inches); mucky peat; structureless massive; loose, loose, nonsticky, nonplastic; low excavation difficulty; slightly acid, pH 6.5, pH indicator solutions; clear smooth boundary. Lab sample # 18N05147
A--2 to 17 centimeters (0.8 to 6.7 inches); black (10YR 2/1) medial silt loam; weak fine granular, and weak medium granular structure; soft, very friable, slightly sticky, slightly plastic; weakly smeary; low excavation difficulty; very fine roots throughout and medium roots throughout and fine roots throughout; very fine irregular and fine irregular pores; 3 percent nonflat angular moderately cemented 2 to 75-millimeter aa lava fragments; strongly acid, pH 5.5, pH indicator solutions; clear irregular boundary. Lab sample # 18N05147
2Bw1--17 to 59 centimeters (6.7 to 23.2 inches); 85 percent very dark brown (10YR 2/2) and 15 percent black (10YR 2/1) cobbly medial silt loam; weak medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; weakly smeary; high excavation difficulty; very fine roots throughout and very coarse roots and medium roots throughout and fine roots throughout and coarse roots; very fine irregular and fine irregular pores; 2 percent nonflat angular very strongly cemented 250 to 599-millimeter aa lava fragments and 10 percent nonflat angular moderately cemented 2 to 75-millimeter aa lava fragments and 20 percent nonflat angular very strongly cemented 76 to 249-millimeter aa lava fragments; strongly acid, pH 5.5, pH indicator solutions; gradual wavy boundary. Lab sample # 18N05148. 25 percent, extremely weakly cemented, charcoal fragments, black N 2/0.
2Bw2--59 to 90 centimeters (23.2 to 35.4 inches); very dark brown (7.5YR 2.5/2) cobbly medial fine sandy loam; weak medium subangular blocky structure; slightly hard, friable, nonsticky, slightly plastic; moderate excavation difficulty; medium roots throughout and fine roots throughout and coarse roots; 2 percent nonflat angular very weakly cemented 2 to 75-millimeter pumice fragments and 15 percent nonflat angular very strongly cemented 76 to 249-millimeter aa lava fragments; abrupt wavy boundary. Lab sample # 18N05149. 25 percent, extremely weakly cemented, charcoal fragments, black N2/0.
3C--90 to 110 centimeters (35.4 to 43.3 inches); cobbles; extremely high excavation difficulty; 100 percent nonflat angular very strongly cemented 250 to 599-millimeter aa lava fragments.
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