| *** Taxonomy Characterization Data *** |
| Pedon ID: 90MT015791 | ( Chouteau, Montana ) | Print Date: Sep 24 2024 1:25AM |
| Sampled as on Sep 29, 1990: | Waltham ; Fine, montmorillonitic Typic Natriboralfs |
| Revised to correlated: | Waltham ; Fine, smectitic Typic Natriboralf |
| United States Department of Agriculture | ||||
| SSL | - | Project | RP91MT053 CHOUTEAU COUNTY | Natural Resources Conservation Service |
| - | Site ID | S1990MT015791 Lat: 47° 38' 20.00" north Long: 110° 35' 37.99" west MLRA: 52 | National Soil Survey Center | |
| - | Pedon No. | 91P0202 | 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 | 3A1a1a | 8D1 | ||||||||||
| 91P01249 | 0-5 | E | S | 23.4 | 7.8 | 0.33 | 19 | ||||||
| 91P01250 | 5-15 | Bt1 | S | 63.4 | 42.6 | 0.36 | 5 | ||||||
| 91P01251 | 15-28 | Bt2 | S | 61.5 | 41.9 | 0.38 | 4 | ||||||
| 91P01252 | 28-46 | Btk | S | 41.5 | 20.3 | 4.3 | 0.37 | 2 | |||||
| 91P01253 | 46-76 | Bky1 | S | 21.3 | 11.9 | -- | 0.41 | 19 | |||||
| 91P01254 | 76-112 | Bky2 | S | 21.8 | 10.4 | 0.40 | 17 | ||||||
| 91P01255 | 112-152 | Byz1 | S | 22.4 | 10.8 | 0.47 | 23 | ||||||
| 91P01256 | 152-203 | Byz2 | S | 22.6 | 10.4 | 0.46 | 26 | ||||||
| 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 | 6A1c | 6E1g | 5C1 | 5C3 | 8D1 | 8A3a | 5D2 | ||||||||||||
| 91P01249 | 0-5 | E | S | 7.0 | 1.64 | 100* | 100 | 0.50 | 1.19 | 2 | |||||||||
| 91P01250 | 5-15 | Bt1 | S | 7.1 | 1.28 | 100* | 100 | 0.55 | 6 | ||||||||||
| 91P01251 | 15-28 | Bt2 | S | 7.6 | 1.03 | 100* | 100 | 0.58 | 0.86 | 7 | |||||||||
| 91P01252 | 28-46 | Btk | S | 8.4 | 0.91 | 16 | 100* | 100 | 0.51 | 13 | |||||||||
| 91P01253 | 46-76 | Bky1 | S | 7.8 | 0.35 | 10 | 100* | 100 | 0.61 | 4.48 | 6 | ||||||||
| 91P01254 | 76-112 | Bky2 | S | 7.7 | 0.36 | 10 | 100* | 100 | 0.63 | 4.39 | 7 | ||||||||
| 91P01255 | 112-152 | Byz1 | S | 8.4 | 0.41 | 7 | 100* | 100 | 0.66 | 3.81 | 8 | ||||||||
| 91P01256 | 152-203 | Byz2 | S | 8.3 | 0.23 | 6 | 100* | 100 | 0.63 | 3.53 | 7 | ||||||||
| Pedon Calculations | |||
| Calculation Name | Result | Units of Measure | |
| CEC Activity, CEC7/Clay, Weighted Average | 0.57 | (NA) | |
| Clay, carbonate free, Weighted Average | 51 | % wt | |
| Weighted Particles, 0.1-75mm, 75 mm Base | 3 | % wt | |
| Volume, >2mm, Weighted Average | 0 | % vol | |
| Clay, total, Weighted Average | 53 | % wt | |
| Weighted averages based on control section: 5-46 cm | |||