Geological Society of America. 151 



GEOLOGICAL SOCIETY OF AMERICA, SPRINGFIELD, 



MASS., 1895. 



Abstracts and Titles of Papers Read at the August 

 Meeting. 



1. On the Glacial Deposits of Southwestern Alberta, in the Vicinity of the Rocky 

 Mountains. By George M. Dawson and R. G. McConnell, Ottawa, Canada. 



This paper presented the facts obtained during a recent examination of the 

 glacial deposits of a portion of the south western of the Canadian Great Plains, in 

 the foot-hills and along the base of the Rocky Mountains, where phenomena of par- 

 ticular interest are met with in connection with the relations of the western and 

 eastern drift. (Cordilleran and Laurentide.) A brief summary of previous ob- 

 servations is followed by a description of sections along two main lines of approach 

 to the mountains at relatively low levels and an examination of the conditions sur- 

 rounding the glacial deposits at the highest levels, found in the form of terraces with 

 rolled shingle at 5,300 feet on the Porcupine Hills. In conclusion, the observed 

 facts are briefly discussed, attention being practically confined to the particular 

 region treated in the body of the paper. 



2. The Champlain Glacial Epoch. By C. H. Hitchcock, Hanover, N. H. 



The Champlain was a true glacial epoch, when the land was consideiably de- 

 pressed. Glaciers from the north and south discharged bergs into an estuary. The 

 fauna was arctic. Moraines and both the marine and fiuviatile clays covered till of 

 an earlier ice-sheet. It is possible to harmonize the conflicting theories of glacial 

 and ice-berg action by referring the greater ice-sheets to the earlier, and the floating 

 ice phenomena to the later, Champlain epoch. 



j. Drumlins and Marginal Moraines of Ice-sheets. By Warren Upham, Cleve- 

 land, Ohio. 



4. The Glacial Genesee Lakes. By Prof. H. L. Fairchild, Rochester, N. Y. 



The direction, inclination and extent of the Genesee Valley made possible the 

 production, during the retreat of the ice-sheet, of a succession or glacial lakes with 

 different outlets. The paper described, with the aid of a map, (i) the present topo- 

 graphy and hydrography of the valley, (2) the ancient drainage channels, (3) the 

 complex lacustrine phenomena. 



j. The Archean and Cambrian Rocks of the Green Mountain Range in Southern 

 Massachusetts. By Prof. B. A". Emeison, Amherst, Mass. 



Description of a series of Archean anticlines partly overturned and cverihrust 

 westward, and of the uniformity of the Cambrian conglomerate gneiss upon the old 

 rocks. 



6. The Triassic in Massachusetts. By Prof. B. A". Emeison, Amherst, Mass. 



The stages of deposition and deformation of the sandstones and the relations of 

 the effusive traps and tuffs and the intruded traps to the sandstones. 



7. Notes on Relations of Lowe'- Members of Coastal Plain Series in South Carolina. 



By Mr. N. Darton, Washington, D. C. 



