THE SALIENT FEATURES OF THE GEOLOGY OF 

 OREGON. 



WARREN DUPRE SMITH and EARL L. PACKARD 



University of Oregon, Eugene, Oregon 



Introduction 

 Physiography 

 Stratigraphy 

 Pre-Cambrian 

 Archean 

 Algonkian 

 Paleozoic 



Devonian-Carboniferous 

 Mesozoic 

 Triassic 

 Jurassic 

 Cretaceous 

 Cenozoic 

 Eocene 

 Oligocene 

 Neocene 

 Psychozoic 



Pleistocene 

 Recent 

 Geologic History 

 Igneous Rocks 

 EcoNomc Geology 

 Bibliography of the More Important Articles 



INTRODUCTION 



No article or book purporting to sum up the known geology of 

 the whole of Oregon has yet been published. Even now the time 

 has not arrived to essay anything like a complete story. Neverthe- 

 less it seems to be a propitious time to take an inventory of our 

 knowledge. This seems desirable in that it will give those interested 

 something like a connected account of the salient features, and on 

 the other hand will afford the workers in the field a clearer idea of 



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