Publication Date


Document Type


First Advisor

McConnell, Harold||Stevens, George P.

Degree Name

M.S. (Master of Science)

Legacy Department

Department of Earth Science




Landforms indicative of massive glacial stagnation are often incorrectly classified as features of active ice deposition. Until very recently in the western plains of the United States and Canada, hummocky stagnation moraine and associated smaller-scale landforms characterizing regions of stagnation have been considered as complex end moraine systems. While the two landform types exhibit some topographic similarities, they may be differentiated. This study develops several quantitative measures of topography useful in distinguishing the two landform classes. The measures selected are local relief, depression density, knoll density, percent area in depressions, and percent area in knolls. It is hypothesized that these five measures can successfully discriminate between hummocky stagnation moraine and end moraine. Data for the analysis were collected from 7.5 minute series, U. S. Geological Survey topographic quadrangles in selected regions in south-central North Dakota. These data are analyzed through multiple discriminant analysis. The results of the analyses show that not all the topographic measures are statistically significant. However, three of the measures, log10 local relief, log10 knoll density, and log10 percent area in depressions, contribute to a statistically significant overall discrimination between the classes.


Includes bibliographical references.||Includes maps.


ix, 106 pages




Northern Illinois University

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