These Sections are located in the north-central conterminous States, including parts of Oklahoma, Kansas, Nebraska, and South and North Dakota. This is an area of nearly level to undulating continental glacial till and glacial lake plains, with areas of kettle holes, kames, and moraines.
Some steep slopes occur adjacent to streams.
This Section is within the Central Lowlands physiographic province. Lithology and Stratigraphy. Glacial till is underlain by Cretaceous marine sedimentary rocks. Soils include frigid Borolls with poorly drained Aquolls in depressional areas. These soils are generally deep, and textures range from sandy to clayey.