90 



Forillon, constitute the most brilliant and striking scenic 

 features of the Gulf coast: i. Perce Rock (Le rocher 

 perce; L'isle percee), 2. Les Murailles. These limestone 

 masses carry a smaller fauna, in some measure distinct 

 from that of the Grande Greve beds, but their identity 

 of age is unquestioned. Further special reference is made 

 in the proper place to them and to the Ordovician and 

 Silurian cliffs of Perce. 



Next south and overlapping unconformably the Devonian 

 limestones of Grande Greve is the broad band of Gaspe 

 sandstone; so named by Logan. This is a heavy mass of 

 red, brown and grey sandstone with many coarse pebble 

 layers. Contact of the basal beds with the limestones 

 is to be seen on the Forillon peninsula at Little Gaspe 

 and at several places from Grande Greve out to Cape 

 Gaspe there are infaulted masses of the sandstone in the 

 limestone beds, which indicate that the coating of sand- 

 stone has been stripped from the latter. Cliffs of Gaspe 

 sandstone are exposed on all the south shore of Gaspe bay, 

 at Chien Blanc, Point St. Peter (the south cape of the bay) 

 and thence into the north shore of the Mai bay where 

 their identity is gradually lost by conformity in compo- 

 sition to the overlying Bonaventure conglomerate. From 

 measurements of the shore sections supplemented by 

 traverses of the great expansion of these sandstones in 

 the interior, Logan inferred a total thickness of more than 

 7,000 feet (2,198 m.). Ells has rightly believed this figure 

 too high on account of faulting, but the amount of 

 duplication from the displacement and the actual lines of 

 faulting have been difficult to decipher on account of the 

 homogeneity of the strata. The Gaspe sandstones contain 

 an abundance of terrestrial plants which have been des- 

 cribed by J. W. Dawson and indicate middle Devonian 

 affinities. The marine fauna of the sandstone is profuse 

 at certain low levels in the series and these species are 

 characteristic survivors of the Grande Greve fauna with 

 an addition of species of later Devonian date, identical in 

 large part with the Hamilton (middle Devonian) species 

 of New York.* 



*Of these fossiliferous localities of the Gaspe sandstone, it may here be stated that 

 those which have been most carefully studied lie at the rear (west) of the first hill 

 behind Gaspe Basin at the head of Gaspe bay and thence north to L'Anse-aux-cousins 

 and Pointe Naveau on the Dartmouth river; at Friday's bluff on the St. John river 

 about 30 miles (50 km.) west from Douglastown and along the courses of the Missis- 

 sippi and other brooks tributary to the York river, about 35 miles (63 km.) in from the 

 coast. 



