REPORT OF THE DIRECTOR I914 I49 



In this northern Gaspe region the shoal-water sand and the shoal- 

 water fauna as such are apparently quite absent from the series. 



I have recently had occasion to describe the Pic d'Aurore section. 1 

 The Pic d'Aurore is the high, transected vertical mountain face 

 which overhangs Malbay and faces the north shore of Perce on the 

 Gaspe front. The cliff section here is a reasonably long one, ex- 

 tending a distance of about 3 to 4 miles from Cape Barre at Perce 

 to Cannes-des-Roches and thence on to Corner-of-the-Beach. The 

 section from Cape Barre, which is at the Perce end and therefore 

 at the east, three-fourths of the distance to Cannes-des-Roches, is 

 composed wholly of the much contorted pre-Bonaventure rocks, 

 and in the Pic d'Aurore, where the section reaches its maximum 

 height, the rocks of the Lower Devonic are best exposed. 



Previous descriptions have made it obvious that the Perce lime- 

 stone, which constitutes the Perce rock and a part of the sea cliff 

 of Pic d'Aurore, is, on the basis of community of species, con- 

 tinuous with the Grande Greve limestone, but it has not been 

 assumed at any time that the Perce limestone was to be closely 

 paralleled with the Oriskany division of the Grande Greve lime- 

 stone. The face of the Pic d'Aurore and of the entire line of the 

 cliff wall, known in the community as " Les Murailles," is brilliantly 

 colored, and in the Pic d'Aurore itself much of this color, in the 

 lower and vertical beds, is due to a washing down of color from the 

 horizontal red Bonaventure beds, which form a cap to the summit. 

 The inaccessibility of the cliff face, the masking of essential by 

 secondary structures and the diffused coloration of the section easily 

 confuse the observer so that the interpretation of the succession is 

 not without difficulties. I bring it to notice in this connection be- 

 cause of its demonstration of the fact that in this part of Gaspe 

 the shoal sedimentation of the Oriskany episode was actually highly 

 developed. Here is a fairly close fold of the beds lying beneath 

 the Perce limestone and the order of succession will be intelligible 

 from the diagram facing page 152. 



The " Perce limestones " are here underlain by rather thick series 

 of white or greenish-gray sandstones which are essentially devoid 

 of fossils though carrying traces of something like a Cladopora. 

 They are for the most part thin bedded and are not of a sort to 

 promise much in the way of fossil content, though in their lower 

 part, on the west flank of the syncline, they have produced 



1 Geological Society of America, Philadelphia meeting [914. 



