290 



R. D. Vernon — T/ie Lotver Coal-measures 



KilbuTTvCoal. gggngSfc, 



"WingfleldjlPj 

 Flagaconea/ 



Mussel" Bed.^ 

 NaugKtonCoal 



Alton Cod ^ 



lf-9in. 



If- 



nmn 



mm. 



\ III. 



V 



IfLgiii 



It'-l.n. 



ifi-iin. 



^Im 



Ltii- 



imES' 



wpTr OF-'^j:»-^^': 



,irj.i 



mr 



iTiTTifTT 



Lf'^ii^ 



BUNTER. 



UficonFormity. 



If-- 



3hHm 



Scale 150 Faet to an JT^di . 



Fig. 1, Section I. New Shaft at Kilbourne Colliery. 



,, II. New Sinking at Oakwell Colliery. 



,, III. Boring at Little Hallaui. 



,, IV. Trial Shaft at Stanton Gate. 



,, V. Boring at Ruddington. 



Excluding thin coals, these measures contain in descending order 

 four named seams — the Kilburn, Xaughton, Alton, and Belperlawn 

 Coals. Additional confirmatory evidence for the identification and 

 correlation of sections is furnished by — 



1. The presence of the Wingfield Flagstones some distance below 



the Kilburn Coal. 



2. The occurrence of a marine bed in the roof of the Alton Coal. 



The former is a group of sandstones, flagstones, and shales, which, 

 because of its remarkable persistence and the bold escarpment to which 

 it gives rise, was regarded by Green (2) as the most important rock of 

 the Lower Coal-measures of the Yorkshire Coalfield. 



