514 PROF. E. J. GARWOOD OX THE LOWER CARBONIFEROUS [DeC. I912, 



This shale probabl)- re})reseiits the argillaceous band near the 

 summit of the Lower DihunophyUum Sub-zone, exposed in the 

 railway-cutting west of Kent's Bank Station in the Grange District. 

 The altered limestones on the western face may possibly contain 

 a few feet of the overlying Upper Dibunopliyllum Sub-zone. 



On the south of Storrs Moss another excellent exposure is pro- 

 vided by Wharton Crag. The beds, though still showing signs of 

 "^rushing, dip at a mnch lower angle, and appear to form portions 

 -of a dome cut off on the west and north by faults. The southern 

 ■margin also shows evidence of an important disturbance running 

 •<3lose to the road, as the beds are here much tilted and crushed, 

 and stained by haematite. This disturbance must represent a 

 ■dislocation of considerable magnitude, as at Ing's Point it brings 

 the Gastropod Beds against a sandstone which may represent 

 a part of the Millstone Grit Series, as suggested in the Geological 

 ■Survey map. The mass of limestone forming AYharton Crag 

 •belongs to the Productus-corrugato-liemispliericus Zone, but beds 

 •of the Lower DihunophyUum Sub-zone come in immediately to 

 the north. 



The Upper Dihunopliyllum Sub-zone is onl}^ represented north of 

 Carnforth by a small patch of dark bituminous limestone to the east 

 of Leighton Beck, containing the Oirvanella Modular Band. Parther 

 south, however, near Borwick and to the south of Nether Kellet, 

 the sub-zone is exposed at several points on the west side of the 

 Ivendal Fault. In ail the exposures the beds are tilted into a more 

 •or less vertical position, and represent an horizon near the summit 

 •of the sub-zone. They are usually much altered, and fossils are 

 poorly preserved. The best continuous section of these beds is 

 •exposed in a series of old quarries near Park House, south of 

 Over Kellet. The beds here terminate abruptly towards the south, 

 and appear to be cut off by an east-and-west disturbance of consider- 

 able importance ; whether this is of the nature of a thrust or not, it 

 is difficult to say. 



(3) The Southern Inliers. 



The two inliers of Carboniferous Limestone which occur in the 

 Millstone Grit country near Swantly and Halton Green are of 

 considerable interest. My attention was first called to these by 

 Dr. Marr, who had noticed their lithological resemblance to the 

 knoll-reef limestones of the Cracoe District, They appear to 

 represent a western extension of the series of knoll-reef limestones 

 which crop out west of Sladburn, and are mapped by the Geological 

 .Survey as faulted on all sides against the Millstone Grit. 



The Swantly Inlier consists of crystalline cream-coloured 

 limestone, but contains also darker portions. The beds appear 

 to have been subjected to considerable pressure, and much of the 

 ■rock is nnfossiliferous ; patches of fossiliferous rock, however, occur, 



