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University of Northern Iowa

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Articles 331 - 332 of 332

Full-Text Articles in Geography

Mechanically Induced Karst Development Along The Silurian Escarpment In Northeastern Iowa, Ardith K. Hansel Jan 1976

Mechanically Induced Karst Development Along The Silurian Escarpment In Northeastern Iowa, Ardith K. Hansel

Dissertations and Theses @ UNI

This research investigates the spatial distribution of surface karst features along the Silurian Escarpment in northeastern Iowa. A 30 square mile area of Elk Townships in Cla:rton and Delaware Counties was selected for intensive investigation. All surface karst features within the study area were located in the field and plotted on a 7.5 minute topographic map. A generic model is presented to explain the process, causation, and geologic time period of active karstification. Field evidence supports the hypothesis that the karst landforms along the Silurian Escarpment in northeastern Iowa are not solutionnl in nature, but rather mechanically induced features. The …


County Seats Of Northeast Iowa: A Multivariate Classification, William E. Blake Jan 1969

County Seats Of Northeast Iowa: A Multivariate Classification, William E. Blake

Dissertations and Theses @ UNI

The purpose of the study was to classify, or group, the fifteen county seats of northeast Iowa according to selected demographic, social, and economic phenomena. To achieve such groupings various methods and techniques of multivariate analysis were utilized. The desire to group the county seats based upon their likenesses or homogeneous traits was paramount. A brief historical overview of Iowa, and a discussion of the reasons for county seat selection, were used to set the background for a multivariate classification of northeast Iowa county seats. Selected accounts of northeast Iowa county establishment and organization were cited as an introductory aid …