Soil Survey of Carter County, Montana
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How to Use This Soil Survey Detailed Soil Maps The detailed soil maps can be useful in planning the use and management of small areas. To find information about your area of interest, you can locate the Section, Township, and Range by zooming in on the Index to Map Sheets, or you can go to the Web Soil Survey at (http://websoilsurvey.nrcs.usda.gov/app/). Note the map unit symbols that are in that area. The Contents lists the map units by symbol and name and shows the page where each map unit is described. See the Contents for sections of this publication that may address your specific needs. ii This soil survey is a publication of the National Cooperative Soil Survey, a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies, including the Agricultural Experiment Stations, and local agencies. The Natural Resources Conservation Service has leadership for the Federal part of the National Cooperative Soil Survey. Major fieldwork for this soil survey was completed in 1990. Soil names and descriptions were approved in 1992. Unless otherwise indicated, statements in this publication refer to conditions in the survey area in 1991. This survey was made cooperatively by the United States Department of Agriculture, Natural Resources Conservation Service and Forest Service; United States Department of the Interior, Bureau of Land Management; and the Montana Agricultural Experiment Station. It is part of the technical assistance furnished to the Carter County Conservation District. The most current official data are available through the NRCS Soil Data Mart website at http://soildatamart.nrcs.usda.gov. Soil maps in this survey may be copied without permission. Enlargement of these maps, however, could cause misunderstanding of the detail of mapping. If enlarged, maps do not show the small areas of contrasting soils that could have been shown at a larger scale. The United States Department of Agriculture (USDA) prohibits discrimination in all of its programs on the basis of race, color, national origin, gender, religion, age, disability, political beliefs, sexual orientation, and marital or family status. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact the USDA’s TARGET Center at 202-720-2600 (voice or TDD). To file a complaint of discrimination, write USDA, Director, Office of Civil Rights, Room 326W, Whitten Building, 14th and Independence Avenue SW, Washington, DC 20250-9410, or call 202-720-5964 (voice or TDD). USDA is an equal opportunity provider and employer. Cover: Archin soils are in the foreground with the Long Pines in the background. Additional information about the Nation’s natural resources is available online from the Natural Resources Conservation Service at http://www.nrcs.usda.gov. iii Contents Part I 75A—Archin-Absher complex, 0 to 2 percent slopes .......................................................... 31 How To Use This Soil Survey .................................. i 75C—Archin-Absher complex, 2 to 8 percent Index to Taxonomic Units ...................................... x slopes .......................................................... 32 Index to Map Units ................................................ xi 175A—Archin loam, 0 to 2 percent slopes ........ 33 Summary of Tables .............................................. xvi 175C—Archin loam, 2 to 8 percent slopes ........ 33 Foreword .............................................................. xix 275D—Archin, gullied-Delpoint complex, General Nature of the Survey Area....................... 1 4 to 15 percent slopes ................................. 33 History.................................................................. 1 375C—Archin-Ynot complex, 2 to 8 percent Industry and Recreation ...................................... 2 slopes .......................................................... 34 Physiography and Drainage................................. 2 Arsite Series ...................................................... 34 Geology ............................................................... 2 79C—Arsite clay, 0 to 8 percent slopes ............. 35 Mineral Resources ............................................... 4 179E—Arsite-Rock outcrop complex, 8 to 25 Ground-water Resources..................................... 5 percent slopes ............................................. 35 Climate................................................................. 6 Assinniboine Series ........................................... 36 How This Survey Was Made .................................... 6 74A—Assinniboine sandy clay loam, 0 to 2 Formation and Classification of the Soils .......... 13 percent slopes ............................................. 37 Formation of the Soils ........................................ 13 74C—Assinniboine sandy clay loam, 2 to 8 Climate .......................................................... 13 percent slopes ............................................. 37 Living Organisms ........................................... 13 174C—Assinniboine-Ynot complex, 2 to 8 Topography .................................................... 13 percent slopes ............................................. 38 Parent Material .............................................. 14 13F—Badland .................................................... 38 Time............................................................... 14 Bascovy Series .................................................. 38 Classification of the Soils ................................... 14 90C—Bascovy clay, 2 to 8 percent slopes......... 39 Soil Series and Detailed Soil Map Units ............. 23 90D—Bascovy clay, 8 to 15 percent slopes....... 40 Abor Series ........................................................ 24 490C—Bascovy-Ethridge complex, 2 to 8 51C—Abor silty clay loam, 2 to 8 percent percent slopes ............................................. 40 slopes .......................................................... 25 590C—Bascovy-Marvan complex, 2 to 8 251D—Abor-Yawdim silty clay loams, 4 to 15 percent slopes ............................................. 40 percent slopes ............................................. 25 623D—Bascovy clay, warm, 0 to 9 percent Absher Series .................................................... 26 slopes .......................................................... 41 168B—Absher-Gerdrum complex, 0 to 4 633D—Bascovy-Neldore clays, warm, 6 to 21 percent slopes ............................................. 27 percent slopes ............................................. 41 Alona Series ...................................................... 27 Beaverflat Series ............................................... 42 20C—Alona silt loam, 2 to 8 percent slopes ...... 28 30A—Beaverflat loam, 0 to 4 percent 621C—Alona silt loam, warm, 2 to 8 percent slopes .......................................................... 43 slopes .......................................................... 29 130A—Beaverflat sandy loam, 0 to 4 percent Alzada Series .................................................... 29 slopes .......................................................... 43 92C—Alzada clay loam, 2 to 8 percent Beenom Series .................................................. 43 slopes .......................................................... 30 49A—Beenom-Reeder loams, 1 to 4 percent Archin Series ..................................................... 30 slopes .......................................................... 44 iv 116C—Beenom-Parchin complex, 2 to 8 170D—Busby-Blacksheep-Twilight fine sandy percent slopes ............................................. 45 loams, 8 to 25 percent slopes ..................... 60 Belltower Series ................................................. 45 170E—Busby-Blacksheep-Rock outcrop 144D—Belltower-Reeder-Vebar complex, complex, 8 to 25 percent slopes.................. 60 4 to 15 percent slopes ................................. 46 270E—Busby, gullied-Delpoint-Yawdim 144E—Belltower-Dast-Reeder complex, complex, 8 to 25 percent slopes.................. 61 15 to 35 percent slopes ............................... 47 Cabba Series ..................................................... 62 144F—Belltower-Dast complex, 35 to 60 112D—Cabba silt loam, 8 to 15 percent percent slopes ............................................. 48 slopes .......................................................... 62 Bickerdyke Series .............................................. 48 212E—Cabba-Rock outcrop complex, 87A—Bickerdyke clay, 0 to 2 percent slopes ..... 49 15 to 45 percent slopes ............................... 63 87C—Bickerdyke clay, 2 to 8 percent slopes..... 49 312D—Cabba-Dast complex, 8 to 15 percent Blacksheep Series ............................................. 50 slopes .......................................................... 63 55D—Blacksheep-Twilight fine sandy loams, Cabbart Series ................................................... 64 8 to 15 percent slopes ................................. 50 60D—Cabbart silt loam, 4 to 15 percent 55E—Blacksheep-Twilight fine sandy loams, slopes .......................................................... 64 15 to 45 percent slopes ............................... 51 160E—Cabbart-Rock outcrop-Delpoint 155E—Blacksheep-Rock outcrop complex, complex, 15 to 50 percent slopes................ 65 25 to 50 percent slopes ..............................