UNIVERSITY OF CALIFORNIA PUBLICATIONS 



BULLETIN OF THE DEPARTMENT OF 



GEOLOGY 



Vol. 8, No. 9, pp. 219-242, 4 text-figures Issued October 3, 1914 



ORE DEPOSITION IN AND NEAR INTRUSIVE 

 ROCKS BY METEORIC WATERS 



BY 



ANDREW C. LAWSON 



CONTENTS 



PAGE 



Introduction 219 



Lindgren 's Criticism 222 



The Circulation of Ground-Water 222 



Lateral Movement of the Circulation 226 



Deposition of Ores in Inclusions and Salients 227 



Hydrothermal Attack 229 



Thermal and Reactionary Metamorphism 229 



Kemp's Criticism 230 



Association of Ores with Fissures 230 



Knopf's Criticism 231 



Paragenesis of Tourmaline and Ore 231 



Laccoliths and Batholiths in Relation to Ore Deposition 232 



Synclinal Structure and Ore Deposition 233 



Butte 233 



Bingham 233 



Ely 235 



Bisbee : 236 



Clifton-Morenci , 239 



Cananea 240 



Effect of Intrusion upon Ground-Water 240 



Magmatic Water in Early Stages of Intrusion 241 



Spurr 's Views 241 



INTRODUCTION 



In a recent number of Economic Geology 1 Professor Lindgren has 

 done me the honor to interpret my views on ore deposition and to 

 dissent from them. His paper is a denial of two hypotheses which 

 occupy the field of criticism in current discussions on the origin of 



i Vol. 9, no. 3, April, 1914. 



