| *** Taxonomy Characterization Data *** |
| Pedon ID: 98MT017002 | ( Custer, Montana ) | Print Date: Dec 5 2025 10:13PM |
| Sampled as on May 10, 1998: | TWILIGHT ; Coarse-loamy, mixed Aridic Ustochrepts |
| Revised to : |
| United States Department of Agriculture | ||||
| SSL | - | Project | CP98NL117 MLRA 58A | Natural Resources Conservation Service |
| - | Site ID | S1998MT017002 Lat: 46° 13' 33.19" north Long: 105° 40' 9.11" west MLRA: 58A | National Soil Survey Center | |
| - | Pedon No. | 98P0410 | Soil Survey Laboratory | |
| - | General Methods 1B1A, 2A1, 2B | Lincoln, Nebraska 68508-3866 | ||
| Taxonomy Tier 1 | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | |||
| Fine | CaCO3 | 1500 | .1-75 | Bulk | Cole | Vol | Resist | ||||||
| Clay | Clay | Clay | kPa | Clay | mm | Den | Whole | % of | Min | ||||
| Depth | <.002 | <.0002 | <.002 | /Clay | Est | Frac | 33 kPa | Soil | Whole | % | |||
| Layer | (cm) | Horz | Prep | (---------% of <2 mm-------) | (-------- % --------) | g cm-3 | cm cm-1 | ||||||
| 3A1a1a | 3A1a1a | 8D1 | 4A1d | ||||||||||
| 98P02370 | 0-5 | A1 | S | 9.6 | 0.7 | 0.45 | 56 | 1.48 | 0.016 | -- | |||
| 98P02371 | 5-14 | A2 | S | 9.6 | 0.46 | 59 | 1.51 | 0.007 | tr | ||||
| 98P02372 | 14-28 | Bw | S | 9.4 | 0.46 | 61 | 1.42 | 0.007 | tr | ||||
| 98P02373 | 28-50 | Bk | S | 9.1 | 1.8 | 0.51 | 68 | 1.43 | 0.005 | 1 | |||
| 98P02374 | 50-69 | BCk/Cr | S | 7.4 | 1.3 | 0.50 | 72 | 1.44 | 0.005 | 1 | |||
| 98P02375 | 69-215 | 2Cr | S | 3.7 | 0.65 | 87 | 1.57 | 0.002 | -- | ||||
| Taxonomy Tier 2 | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | -12- | -13- | -14- | -15- | -16- | |||
| pH | pH | Org | Tot | Al+½ Fe | CO3 as | (--- Base Sat ---) | NZ | ECEC | CEC7 | ECEC | Al | ||||||||
| Depth | H2O | NaF | C | C | Oxal | ODOE | CaCO3 | NH4 | Bases | P Ret | cmol(+) | /Clay | /Clay | Sat | E C | ESP | |||
| Layer | (cm) | Horz | Prep | (------------------------------------------ % --------------------------------------------) | kg -1 | % | dS m-1 | % | |||||||||||
| 4C1a2a | 6A2e | 4E1a1a1a1 | 5C1 | 5C3 | 8D1 | 5D2 | |||||||||||||
| 98P02370 | 0-5 | A1 | S | 7.4 | 0.85 | -- | 100* | 100 | 0.81 | 1 | |||||||||
| 98P02371 | 5-14 | A2 | S | 7.5 | 0.57 | 100* | 90 | 0.89 | 1 | ||||||||||
| 98P02372 | 14-28 | Bw | S | 8.2 | 0.78 | 1 | 100* | 100 | 0.83 | 1 | |||||||||
| 98P02373 | 28-50 | Bk | S | 8.6 | 1.16 | 8 | 100* | 100 | 0.53 | -- | |||||||||
| 98P02374 | 50-69 | BCk/Cr | S | 8.4 | 1.14 | 7 | 100* | 100 | 0.55 | -- | |||||||||
| 98P02375 | 69-215 | 2Cr | S | 9.1 | 0.08 | tr | 100* | 100 | 0.78 | 3 | |||||||||
| Pedon Calculations | |||
| Calculation Name | Result | Units of Measure | |
| CEC Activity, CEC7/Clay, Weighted Average | 0.68 | (NA) | |
| Clay, carbonate free, Weighted Average | 7 | % wt | |
| Weighted Particles, 0.1-75mm, 75 mm Base | 69 | % wt | |
| Volume, >2mm, Weighted Average | 1 | % vol | |
| Clay, total, Weighted Average | 8 | % wt | |
| LE, Whole Soil, Summed to 1m | 1 | cm/m | |
| Weighted averages based on control section: 25-69 cm | |||