18 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [May 28, 



(1.) The Norbury Section*, 



N.E. 



Middle coal-measures, 3 4 5 6 



Little evidence of the relation which exists between the coal-mea- 

 sures and the new red sandstone strata is to be found in the country 

 lying between INIacclesfield and Stockport, the drift enveloping the 

 district so as to prevent the beds from being seen. In the brook- 

 course at Norbury, about three miles south of Stockport, there was a 

 good section a few years ago, but it has lately been covered up. On 

 proceeding up the stream from the Macclesfield turnpike-road to the 

 cottage below the mill, the upper new red sandstone was seen dip- 

 ping to the south-west at angles varying from 10° to 20°. Under 

 it were two yards of red clays (5), which were laminated and con- 

 tained small plates of mica. I found no organic remains in this de- 

 posit, but from the position of the beds they were probably the re- 

 presentatives of the magnesian limestone. Immediately under these 

 marls was a bed of coarse sandstone (4'), five feet three inches in 

 tliickness. Its colour was different from that of the upper new red 

 sandstone, and it was composed of nearly incoherent sand of much 

 larger and sharper grains than the upper rock. The colour of it 

 was a dirty brown. In all its characters it resembled the lower new 

 red sandstone, and I have therefore described it as such. Under the 

 last-named deposit was a bed of reddish-coloured clays (3), about 

 four yards in tliickness and containing no organic remains. These 

 appeared to belong to the lower new red sandstone rather than to the 

 coal-measures, as the latter are seen dipping under them at a much 

 greater angle, namely at about 40°. The coal-measures belong to 

 the middle division of the field. 



(2.) Fog Brook Section. 



N.N.E. 



s.s.w 



X\\\ 



^^^^^^^^^ 



Middle coal-field (lower part^ 



L'^pper new red 

 sandstone. 



This is seen in the stream known by the above name (Fog Brook) 

 in Oflerton, about three miles south-east of Stockport. In it the upper 

 new red sandstone appears well-developed, dipping at an angle of 15° 

 to the S.S.W., but further down the brook it dips at 25°, and ter- 



* 111 this aud tlie following sections, illustrating the present memoir, the refer- 

 ences will be as follows : — 



6. Upper new red sandstone. 

 5. Red marls and limestone. 

 4. Lower red sandstone. 



3. Red clays. 



2. Upper coal-measures. 



1. Middle coal-measures. 



1 



