OF THE CLTPTON PAULT. 151 



stone Shales, there being also a corresponding wedging of the Lower 

 Limestone Shales into the Mountain Limestone as indicated by the 

 S-shaped boundary-line in the map. And I may mention that I 

 have some evidence of the prolongation of the Mountain-Limestone 

 wedge still further westward into the Old Eed Sandstone. 



In conclusion, I would draw attention to the fact that the marked 

 north-east trend of the Mountain-Limestone uplands from the point 

 of confused dips just alluded to, is undoubtedly, in part at least, 

 caused by the Clifton fault ; and to the further fact that the line of 

 this fault is, roughly speaking, parallel with that of the great Clapton- 

 in-Gordano fault. Messrs. Buckland and Conybeare suggested that 

 " it is not improbable that the two may be connected ;" but of this 

 there is no direct evidence. 



DiscxjssioTsr. 



Dr. EvAFs thought the paper was one of great value ; he asked if 

 there were not proof of the existence of more than a single fault. 



The xiuTHOB said that at present he could find no proof of the 

 existence of a fault in the line of the Avon gorge ; the principal 

 fault is nearly at right angles to the line of the river. In answer 

 to the Chairman he said that to the east the fault was obscured to 

 some extent by the overlying Trias. 



