PERMIAN BEDS OF SOUTH LANCASHIRE. 31 



in them by me. These marls are succeeded by the lower 

 new red sandstone^ similar to that of CoUyhurst^ except 

 that the conglomerate-bed was not exposed^ and a small 

 parting of marl occurred in the upper portion of the sand- 

 stone. On following the rock towards the London and 

 North- Western Railway at Heaton Norris, it is seen 

 much dislocated, and then cut off by a fault "^^ running 

 south-east and north- west_, which brings in the trias beds 

 that underlie the town of Stockport. The fault inclines 

 at an angle of 45°, to the north-east ; and a thin bed of 

 red clay appears to lie in it. 



The trias beds, apparently the pebble-beds, are seen in 

 Hatton Street dipping to the W.N.W., at an angle of 12°, 

 and may be traced through Portwood and Newbridge 

 along the valley of the Goyt, to the place near where the 

 Fog brook joins the Goyt. The lowest beds of trias are 

 of a deep red colour, soft, and comparatively free from 

 pebbles f. They dip at an angle of 15°, to the S.S.W., 

 and repose on beds of the lower part of the middle coal- 

 field dipping to the S.S.W. at an angle of 80°. The trias 

 beds, if they continue all this distance without any fault, 

 from the Heaton Norris Railway Station to Goyt Hall, 

 must be of great thickness ; but most probably they may 

 be repeated by one or more faults, although these are 

 difficult to make out. 



The fault at Heaton Norris, when taken in connexion 

 with the occurrence of coal-measures in Chorlton-on- 

 Medlock, hereinafter described, is of considerable interest. 

 In my former communication, it was stated that the dis- 



* This fault was first shown to me by Mr. E. Hull, B.A., F.G.S., of the 

 Geological Survey. 



t Mr. Hull is inclined to consider this sandstone as the lower new red 

 sandstone (Collyhurst), and not trias. It is no doubt, as here stated, free 

 from pebbles, and much like the last-named rock in its characters ; but up to 

 this time, to my knowledge, there is no other evidence to show that it is a 

 permian, and not a trias rock. 



