92 ABSTRACTS 



The two exceptions, near Sermiarsut on the Nugsuak peninsula 

 seem to be overriding terminal moraines of not great age but these 

 were seen toward the last of my work and were not carefully studied. 



Everywhere throughout the regions visited there is evidence of the 

 former greater extension of the inland ice, it having covered all the 

 highest peaks, passed out over the ends of the promontories, filling 

 the fiords and passing into the waters of Baffin's Bay/ 



The peaks which present sharp serrated edges toward Baffin's Bay 

 are distinctly rounded on the sides toward the inland ice; the highest 

 points visited show abundant roche moutonnee forms, and everywhere 

 erratics are freely scattered. 



The Origin and Relations of the Grenville and Hastings Series in the 

 Canadian Laurentian. By Frank D. Adams and Alfred E. 

 Barlow, with observations by R. W. Ells."^ 



This paper may be regarded as a continuation of two former papers ^ 

 by Adams, treating of the Laurentian of Canada and presenting the 

 results of further work. It deals more especially with the probable 

 origin of the Grenville series in the light of recent studies by the 

 authors of a veryjarge Laurentian area in central Ontario, along the 

 margin of the protaxis and north of Lake Ontario. 



The northwestern portion of the district in question is underlain 

 by the Fundamental Gneiss, which is believed to form part of the 

 original crust of the earth and to be of igneous origin. The south- 

 eastern portion is occupied chiefly by the thinly bedded calcareous 

 rock of the Hastings series, a series of undoubtedly sedimentary ori- 

 gin, but of unknown age, separated, however by a long erosion inter- 

 val from the overlying Cambro-Silurian, and having certain petro- 

 graphical resemblances to the Huronian of the typical area north of 

 Lake Huron. Between these two series of rocks is an irregular belt 

 of the Grenville series, identical in all respects with that of the original 

 Grenville area in the province of Quebec. The character of these 

 several series is described and their resemblances and points of differ- 

 ence indicated. 



'See paper by writer in American Geologist, Vol. XVIII,,pp. 379-384, 1896. 



= The paper appears in the American Journal of Science for March 1897. 



3Ueber das oder Ober Laurentian in Canada. Neues Jahrbuch flir Mineralogie 

 Beil. Bd. VIII, 1893. 



A Further Contribution to our Knowledge of the Laurentian.— Am. Jour. Sci. 

 July 1895. 



