Date of Award


Degree Name

Master of Science


Geological and Environmental Sciences

First Advisor

Dr. W. Thomas Straw

Second Advisor

Dr. Lloyd Schmaltz

Third Advisor

Dr. W. David Kuenzi

Fourth Advisor

Dr. Caspar Cronk

Access Setting

Masters Thesis-Open Access


A detailed investigation of selected textural and mineralogical aspects of tills in southwestern Michigan is used to define an interlobe boundary relationship between the Wisconsinan ice of the Lake Michigan and Saginaw lobes. Bedrock underlying the study area contributed little to the bulk composition of the tils investigated. However, morainal development in the study area shows strong correlation with bedrock topography.

In a discussion of the deglaciation of Michigan and the study area, a history of morainal development is reviewed and attention is focused on the reentrant district located in Kalamazoo and neighboring counties. Attempts to delineate tills of the Lake Michigan and Saginaw lobes using textural and magnetic susceptibility data were inconclusive. However, the character and extent of an interlobate boundary relationship in the study area is delimited by ratios of heavy minerals, as well as, ratios of the 7A/10A peaks produced by clays in X-ray diffractograms.

Included in

Geology Commons