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CONTENTS. 



Letter of transmittal xix 



Outline of this monograph xxi 



Introduction 1 



Ciiaptkr I. — Geological esploratious and literature, by W. S. Bayley 5 



Chapter II.— The Basement Complex, by W. S. Bayley 149 



Section I. — The Northern Complex 150 



The Mona schists 152 



Distribution and topography 152 



Relations to adjacent formations 153 



Petrographical character 154 



Basic schists 154 



The dense varieties 154 



The banded varieties 156 



Other varieties 158 



Acid schists 159 



The Kitchi schists 160 



Distribution .ind topograjihy 161 



Relations to adjacent rocks '. 162 



Petrographical character 162 



Basic schists 162 



Macroscopical 162 



Microscopical 164 



Acid schists 167 



Origin of the Kitchi schists 168 



The gneissoid granites 169 



Distribution and topography , 169 



Relations to adjacent rocks 170 



Biotite-granites 171 



Petrographical character 171 



Macroscopical 171 



Microscopical 171 



Muscovite-granites 174 



Origin of the granites 175 



The hornblende-syenite 176 



Distribution and topography 176 



Relations to adjacent rocks 176 



Petrographical character 176 



