BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 

 VOL. 17, PP. 469-484, PLS. 59-63 OCTOBER 18, 1906 



GEOLOGY OF DIAMOND HEAD, OAHU 



{Presented by title before the Society December 29, 1905) 



BY C. H. HITCHCOCK 



CONTENTS 



Page 



Introduction 4G9 



Diamond head 470 



Views of J. D. Dana 471 



Views of W. T. Brigham 471 



Views of C. E. Dutton 472 



Notes on the Tertiary geology of Oahu, by W. H. Dall 472 



"Brevity of tuff cone eruptions," by S. E. Bishop 473 



Writer's statement at the Albany meeting 474 



Doctor Dall's reply to Doctor Bishop 474 



Archibald Geikie's comment 474 



Dr J. C. Branner's statement 475 



Dr Whitman Cross's statement 475 



The latest views of Doctor Dall 475 



Observations made in 1905 477 



The Tertiary limestones 478 



The black ash 480 



Punchbowl and Diamond head compared 481 



The talus-breccia deposit with land shells 482 



The latest submergence and reelevation 483 



Relation of the basaltic ejections to Diamond head. 484 



Conclusions 484 



Introduction 



The title of the paper presented at Ottawa is "Hawaiian Notes." 

 These naturally grouped themselves into three parts: First, the facts 

 observed in Oahu, particularly about Diamond head; second, the further 

 study of the supposed caldera at Mokohea ; and, third, the latest eruption 

 from Kilauea. For publication I have thought best to offer the two 

 brochures relating to Diamond head and Mohokea, which supplemon: 



XLII — Bull. Geol. Soc. Am., Vol. 17, 1905 (469) 



