BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Vol. 30, pp. 189-338, PLS. 7 (COLORED MAP). 8-10 JUNE 30, 1919 



OUTLINES OF THE GEOLOGY OF BEAZIL TO ACCOMPANY 

 THE GEOLOGIC MAP OF BRAZIL ^ 



BY JOHN CASPER BRANNER 



{Presented hy title before the Society Decemher 28, 1917) 



CONTENTS 



Page 



Foreword 193 



The available data 194 



In general , 194 



Maps 197 



Works on the physical geography 198 



Works on the general geology 199 



Geologic maps of Brazil 199 



Outlines of the stratigraphic geology 202 



In general 202 



Archean 203 



General discussion 203 



Economic geology of the Archean / 204 



Early Paleozoic 204 



General observations : 204 



Economic geology of the early Paleozoic 207 



Silurian 207 



Devonian 2QT 



General observations /201 



Economic geology of the Devonian \ 208 



Carboniferous .V 20$ " " 



General observations \^()8 



Economic geology of the Carboniferous 2i^^i*^%i V. 



Permian 211 



General observations 211 



General conclusions ^ 218 



Economic geology of the Permian 220 



Triassic 220 



Cretaceous 221 



General observations 221 



Economic geology of the Cretaceous 221 



^ Revised manuscript received by the Secretary of the Society May 20, 1918. 

 This paper was presented to the Society under the title "Geologic Map of Brazil." 



XIV— Bull. Geol. Soc. Am., Vol. .30. 191 S 



(189) 



