22 Mesozolc and Coenozoic Geology and Palaiontolo(iy. 



occupy the whole of the cliff'. It thus appears that the trap at Blomi- 

 don is a comformable bed, resting- on the sandstone, exactly as in some 

 places on the opposite shore. 



The coast section between Blomidou and Horton, as seen near Pereau 

 river and Bass creek, and at Starrs Point, Long Island and Bout Is" 

 laud, exhibits red sandstones, with northwest dips at angles of about 15 

 degrees, and precisely similar in mineral character to thoseof Blomidon, 

 except that aear Bass creek some of them contain layers of small 

 pebbles of quartz, slate, gra'nite and trap. The whole of these sand- 

 stones underlie those of Blomidon, and resemble those which occupy 

 the long valley of Cornwallis and the Annapolis river, westward of this 

 section. In this valley, the red sandstone, in consequence of its soft 

 and friable nature, is rarely well exposed, but where observed, it has 

 the same dip as on the coast. The comparatively high level of the 

 sandstone, where it underlies the trap, shows that the present form of 

 this valley is in great part due to denudation. 



Commencing at Truro, the New Red Sandstone extends with several 

 interruptions, as far as Cape d'Or. It consists of a narrow strip ex- 

 tending only about three miles from the bay, with occasional masses 

 of trap. At Cape d'Or a great mass of trap rests on slightly in- 

 clined red sandstone, and this again on disturbed carboniferous rocks, 

 while, behind and from beneath these last, still older slates rise into 

 mountain ridges. Cape d'Or forms a great salient mass standing out 

 into the bay, and separated from the old slate hills behind, by a val- 

 ley occupied by the red sandstone and carboniferous shales. It dif- 

 fers from most of the trappean masses in the arrangement of its com- 

 ponent parts. The upper part of the cliff" coHsists of amygdaloid and 

 tufa, often of a brownish color, while beneath is a more compact trap, 

 showing a tendency to a columnar structure. 



The small patches of New Red Sandstone on the Netv Brunswick side 

 of the Ba}^ of Fundy, with the deposits in Nova Scotia, show that the 

 depression occupied by the Triassic Bay was of similar form (though 

 somewhat enlarged probably) to that occupied by the present Bay of 

 Fundy. 



