294 RECORDS OF POST-TRIASSIC CHANGES 



more and more decayed until at the contact the rock is so loose 

 and unconsolidated that it will scarcely hold together to form a 

 hand specimen. 



Sandstone and Impure Limestone. 



The lower layers of the calcareous formation are largely 

 made up of this disintegrated material but it is not found more 

 than two or three feet from the contact. These lower layers 

 are poorly defined and conform to the minor inequalities of the 

 eroded surface of the Trap. The Trap debris then gives place 

 to a fine grained light grey to green sandstone with calcareous 

 cement, in thin laminae, which is overlain by beds of impure 

 limestone from one to three feet thick alternating with thinner 

 layers containing flint-like quartz bands. At one spot in Broad 

 Cove a brown sandstone in beds three or four feet in thickness 

 is seen overlying the limestone. The maximum thickness of 

 this sedimentary formation would be about twenty-five feet. 

 Altho several brooks cut across these beds at right angles, in 

 only one can the limestone be traced, and there for a distance of 

 but twenty or thirty yards from the beach where the trap 

 appears in the bed. The other brooks have cut completely 

 through and flow over the underlying trap until the beach is 

 reached. This shows how little remains of what must have been 

 an extensive formation and explains in part why it remained so 

 long unnoticed. 



The dip of these beds is, at first, somewhat confusing. On 

 the north-east sides of the coves it is always to the south-west, 

 and at angles as high as twenty degrees. On the south-west 

 sides of the coves it is correspondingly high to the north-east. 

 In the bed of the brook mentioned, which is in the centre of one 

 of the coves, the dip proved to be from three to five degrees to 

 the north-west. At several places the trap was visible beneath 

 the apparent synclines arid showed no corresponding deformation. 

 Moreover, the variable inclination of the layers was there seen 

 to be that of the contact surface of the trap on which they rest. 

 As the layers recede from this surface they become more uniform 

 in inclination which is seen to be to the north-west at an angle 



