Document Type

Thesis - Open Access

Award Date


Degree Name

Master of Science (MS)


All soil constituents are formed form the disintegration of rocks with the exception of a small percent of organic matter. The soil is sometimes removed as fast as formed by the action of water and air. Streams of running water, tides and waves, or the moving of immense ice fields called glaciers are the most active agencies. The land formed by the deposition of the materials carried by glaciers is usually known as drift. A large portion of the soil of the northeastern prairies has been formed in this way. Particularly is this true of the land lying east of the Missouri River in our own state. An immense field of ice swept down from the tops of the hills of the Height of Land and filling up the intervening valleys which, today, covered by grasses, flowers and trees and dotted here and there by farm houses and villages, constitute the great wealth of our state. The land west of the Missouri River is however of a different origin. It belongs largely to the Tertiary period. The land of the Coteans in the northeastern part of our state are terminal moraines. The Gumbo flats along the Missouri River are of sedimentary origin.

Library of Congress Subject Headings

Soils -- South Dakota



Number of Pages



South Dakota State College


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