i6o 



NEW YORK STATE MUSEUM 



it was once a part of the shore- 

 ward mantle. The rifting away 

 of the ragged block now making 

 the Robin reefs, from the mass 

 of the Table-a-rolante, is a more 

 proximate conclusion. Here on 

 the sea front the remnants of 

 these torn-off blocks are more 

 beneath the eye than elsewhere 

 at the sides of the Table-a- 

 rolante platform, but these other 

 sides are not without their evi- 

 dences of downthrow blocks. 

 One sees them on the north at 

 the foot of the Grande Coupe 

 and the shore of Malbay from 

 Grande Coupe to Cannes-des- 

 Roches and to Corner-of-the- 

 Beach is an overturned mass of 

 Bonaventure tipped down over a 

 basement of Ordovicic-Siluric 

 limestones. 



Such rifting as this, resulting 

 from a solution of the basement, 

 has naturally been effective 

 wherever Old Red deposition 

 was left on a limestone base — 

 and these conditions hold true 

 for the northeastern face of the 

 Catskills. Here the relicts of the 

 process bear the marks of great 

 antiquity in notable contrast to 

 those in the northeast. The 

 scarp surfaces of the Catskills 

 are rounded, sloped and deeply 

 eroded, in the Perce mountains 

 they arc sharp and fresh; but 

 there is throughout the moun- 

 tains of Gaspe and their relations 

 to the sea an aspect of newness 

 which constantly surprises the 

 observer. That, however, the 

 rifted Old Red mountains of the 



