Vol. 57.] COAL-MEASXJRES OF THE SHROPSHIRE COALFIELDS. 



91 



pit as being sunk on the top of a broad anticline. On the other 

 hand, the outlier of older Coal-Measures on the Brown Clees would 

 point to the surmise that there we are in the axis of a syncline ; but 

 denudation having in this district operated in comparatively recent 

 times, the data are not very plentiful, and I do not insist. 



Coming, however, to the Forest-of-Wyre Coalfield and its outlier 

 of older Coal-Measures on the Titterstone Clee Hills, we undoubtedly 

 again meet with the same phenomenon as that noticed in the 



Figs. 4 & 5. — Sections showing the present position of the strata^ 

 the post- Carboniferous faults being re-inserted. 



N.N.W 



f 



PudleyHill 



S.S.E 



Upper Coal Measures 

 Middle Coal Measures 



[Scales: vertical, 600 feet = l inch; horizontal, 2 miles =1 inch.] 



N.W 



Amies 



SJE 



a„z 



Yew Tree 



Caughley 



Upper Coal Measures 

 Middle Coal Measures 



P=Pennystone Group. 

 5= Best Coal Group. 



a — anticlines. 



/= Faults. 



F = Fungus Coal Group. 



T= Top Coal Group. 



[The horizontal scale has been enlarged to 2 inches to the mile in fig. 5, in 

 order to show the Madeley and Swinney Faults (/^ & /^);/^ is No. 58 

 in Prestwich's Map and Memoir.] 



Coalbrookdale field, as shown by the dips on the Geological Survey 

 Maps. This syncline in my opinion (an opinion which I deduced 

 from its general direction, the similarity of the coals at Highley to 

 those at Cannock, and the subjacent formation in both cases being 

 red Devonian strata) continues to Huntington in Staffordshire. 



This syncline is bounded on its north-western side by an anti- 

 cline ranging from Titterstone Clee Hill through Billingsley, and, J 



