OF THE NORTH-WEST OF ENGLAND. 215 



at an angle of 40°. No fossils were found in any of the 

 beds. The bed of soft sandstone is evidently the same 

 deposit as that seen in the Cheetham Weir Hole, and herein- 

 after mentioned in the Collyhurst section. 



This section (Norbury) appears to shew that the red marls 

 with limestones, as seen at Collyhurst, are not conformable 

 to the overlying upper new red sandstone, or they would 

 most probably have been seen; it also proves that the con- 

 glomerate bed is unconformable to the lower new red sand- 

 stone of Heaton Mersey and Collyhurst. No doubt the last- 

 named deposit is variable in thickness, but we can scarcely 

 suppose that a rock of between four and five hundred feet 

 thick, at least, can, in the distance of three miles, dwindle 

 down into the sandy conglomerate of five feet. 



Fog Brook Section. 



N.N.B. " P.8.W. 



Middle coal-field (lower part). Fppei^new red 



sacdstone. 



This is seen in the little stream known by the name of Fog 

 Brook, in Offerton, about three miles south-east of Stock- 

 port. In it the upper new red sandstone appears well 

 developed, dipping at an angle of 15° to the south-south- 

 west ; but further down the brook it dips at 25°, and terminates 

 in two singular rounded projections, which have evidently 

 been pushed up by the underlying strata. It is succeeded by 

 about one yard of red clays, which bear evidence of consider- 

 able pressure having been exerted upon them. Then come 

 regular coal-measures, dipping south-south-west at angles 

 varying from 70 to 80°. These last-named strata are the 

 lower part of the middle coal-field ; the whole of the thick 

 beds of this valuable deposit being here covered up by the 



