22 



PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [May 28, 



it is 'i'l'O yards in depth. In sinking it, the following section, for 

 the copy of which I am indebted to the proprietors of the colliery, 

 was met with : — 



yds. 

 Till 5 



ft. 

 

 2 

 2 

 

 

 1 

 1 

 1 

 



1 



1 



2 



1 

 1 

 2 

 1 

 2 

 







in. 







01 











0^ 



6 













 10 



6 



3 















6 

 10 







0_ 









White sandstone 



Lower part of the 

 Bunter sand- 



Red clays 



Red sandstone 5 





Red marls 2 





Red stone 



Red marls 1 





White sandstone 





Red marls ... 3 





Limestone 





Red marls 





Limestone 



Red marls 



. Shell marls and 

 limestones. 



Limestone 





Red marls 





Red marls with several thin beds of limestone 

 Red marls 









Red marls ... 12 





Lower new red sandstone resting on the 

 higher part of the upper coal-field 7 





The three members of the new red sandstone dip nearly due south 

 at an angle of about 6°. The upper new red rock soon crops out, 

 but the limestones and marls and lower new red sandstone, as well as 

 the coal-measures, abut against the upper new red sandstone which 

 is here found lying in a fault similar to that at Pendleton in the 

 last section. The coal-measures comprise 398 yards of the upper 

 field, and dip to the south at an angle of about 8°. They have been 

 examined up to the fault, and there exhibit every appearance of 

 having been long subjected to the action of water. The side of the 

 fault slopes at an angle of about 20° towards the north. 



(8.) Atherton Section. 



s.s.w. 



s^^^^S 



Middle coal. 4 



This section is near Leigh, and is exposed in the small brook- 

 course which enters the land, formerly part of the park, from the 

 north. On the banks of this stream, up to and a little past the small 

 bridge, the upper new red sandstone appears dipping at an angle 

 of about 8° or 10° to the south. It is seen gradually passing first 

 into beds of red marl containing thin beds of hard gritstone, and 

 afterwards into deposits of red laminated marls containing numerous 

 beds of limestone. The largest of these, I was informed, is about 

 one foot eight inches in thickness, and there are several beds of from 



