THE SECONDARY STRUCTURES OF THE EASTERN PART 

 OF THE B ARAB 00 QUARTZITE RANGE, WISCONSIN 



EDWARD STEIDTMAN 



University of Wisconsin 



CONTENTS 



Introduction 



Purpose and Scope of the Investigation 

 Secondary Structures Related to the Folding of the Range 

 Secondary Structures Not Related to the Folding 

 Resume of the Secondary Structltres 

 The Mechanics of the Secondary Structures of the Eastern Part 



OF THE BARABOO QuARTZITE RanGE 



The Secondary Structures Related to the Folding 

 The Secondary Structures Unrelated to the Folding 

 Conclusion 



INTRODUCTION 



Despite the many valuable investigations on secondary structures 

 from theoretical, experimental, and field viewpoints, practically no 

 systematic attempt has been made to correlate secondary structures 

 with stress strain relations which have given rise to major units 

 of structure over large areas. The value of such investigations is 

 being forced home, particularly in areas of poor exposure, where 

 a few scattered details regarding the secondary structures are some- 

 times the only key to the major structure of industrially important 

 areas. 



PURPOSE AND SCOPE OF THE INVESTIGATION 



This paper aims to set forth the relation of the joints and other 

 secondary structures of the well-known and well-exposed eastern 

 portion of the Baraboo quartzite range, to the stress strain relations 

 which have developed the structural units of which the district is 

 a whole or a part. On this basis the secondary structures of the 

 district have been classified as those (i) related to the folding of the 

 range, and (2) those not related to the folding of the range. 



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