abstracts of tapers 87 



Session of AVednesday, December 30 



The Society convened at 9.30 o'clock a. m. in general session, First 

 Vice-President W. Lindgren in the chair. 



report of auditing committee ^ 



The Auditing Committee begs to report that they, have examined the 

 papers and vouchers of the Treasurer and find them to be correct and in 

 good order. 



The investment securities Avill be examined at a later date. 



J. M. Clarke, 

 H. L. Fairchild, 

 For the Committee. 

 The report was accepted. 



The printed report of the Council was taken from the table and, on 

 motion, accepted. 



titles and abstracts of papers presented in general session and 



discussions thereon 



REVISION OF PliE-CAMliRIAN CLA.SSIFWATIOy IX ONTARIO 

 BY WILLKT G. MILLER AND CYKIL W. KNIGHT 



(Ahstract) 



I>uriii{j the past decarlo the authors have been piifraged in detailed work on 

 pre-Cainhriau areas in various parts of the Province of Ontario. The results 

 of tliis work, and that of otlier investij,'ator.s, have made apparent the necessity 

 for revising the age classification of tlie pre-Cambrian rocks, particularly in 

 the use of the terras Huronian. Laurentian. and others. The following classi- 

 fication and nomenclature have therefore been adopted by the Ontario Bureau 

 of Mines: 



Keweenawan, 



Unconformity. 

 Ammikean. 



Under this heading tlie authors i)lace not only the rocks that have 

 heretofore been called Animikie, biit the so-called Huronian rocks 

 of the "classic"' Lal^e Huron area and the Cohalt and Ramsay Lake 

 series. Minor unconfonnities occur within the Animikean. 

 QrenI unconformity. 



' I'nflfi- (la(p of I'Vhi-miry 11. 101.";. lOflwanl H. Miitlicwn rcpnrls llinl. artlriB as a mom- 



lii'f of ilic Aiulilinj: ComtniKi f \\\r Soclclv. he cxamliicd llio Soc|pty".s srciirlflrs In 



tlie hiiiirls of the 'I'rfiisiircr antl found llii'iii to ln' as Usicd in (ho Troasiirpr'.s report 

 under date oi December 1, 1014. 



