102 J. E. Marr — The Coniston Limestone Series. 



Skelgill ; but on the moorland between this beck and Nanny Lane 

 it has yielded a large number of fossils, especially Cystideans. 



On the Avest side of Windermere an important development of 

 the Coniston Limestone Series is seen in the neighbourhood of 

 Sunny Brow. On Limestone Hill, to the west of Sunny Brow, 

 a fell-road exposes an ashy calcareous grit with many casts of 

 Lindstrocmia, faulted against the Dimorpliograptus zone of the Skelgill 

 beds. On the hill to the east of the road, and also in Cross Intake, 

 normal Applethwaite Limestone is seen, with many corals. Although 

 the conglomei'ate has not been detected here, the character of the 

 ashy grit leaves little doubt that we are here dealing with the repre- 

 sentative of the Stile End Beds, and this was the view taken by 

 Professors Harkness and Nicholson in 1866 (Q.J.G.S. vol. xxiii. 

 p. 482). 



On the high moorland south-west of Coniston Lake, the Coniston- 

 Limestone Series is seen in numerous exposures, and the Apple- 

 thwaite Series is extremely fossiliferous. Along this tract, as in the 

 case of the Stockdale Shales, the cleavage is much stronger than in 

 the district already traversed. The best section of the lower part 

 of the series is shown at High Pike Haw, near the head of Appletree- 

 worth Beck,, whilst the upper portion is excellently displayed in 

 Ashgill Quarry. 



At High Pike Haw the discordance of strike between the Coniston 

 Limestone Series and the underlying Borrodale volcanic rocks is 

 excellently exhibited, as shown on the map of the Geological Survey.. 

 The lowest rock having the strike of the Coniston Limestone Series- 

 is a purple breccia associated with green ash. Above this are bedded 

 ashy grits and conglomeratic beds, succeeded by a fossiliferous 

 calcareous ash, strongly resembling the Stile End Beds. That it is 

 actually referable to these beds is shown by the existence of a 

 calcareous conglomerate above it, occupying the same position as at 

 Shap and Stockdale. The conglomerate is succeeded by the Apple- 

 thwaite Beds, which have a well-marked fine ash at the summit. The 

 Stauroceijhalus Limestone is not seen here, though the Ashgill Shales 

 come on above the Applethwaite group. 



In Ashgill Quarry, the Stanroccijhnlus Limestone is seen in tbe 

 north-west corner, brought against the Skelgill Beds by a cross- 

 fault. The Ashgill Shales form the main mass of the quarry, and 

 are succeeded by the Skelgill Beds, in true sequence, at the top of 

 the quarry-cliff. The relationship between the Stmirocephahis 

 Limestone and the Ashgill Shales above and Applethwaite Beds 

 below, is also seen at one or two jDoints in the course of Appletree- 

 worth Beck. 



The section at Millom generally resembles that at High Pike 

 Haw. In Waterblean Quarries the lowest rock seen is a rhyolite of 

 the Borrodale Series. Upon it rest green ashes and breccia, and 

 then a purple breccia, as at High Pike Haw, but the fossiliferous 

 Stile End Beds do not appear to be exposed in this quarry, although 

 a remarkable development of beds, apparently referable to this stage, 

 occurs in Millom Park, north of Beck Quarry, and striking so as. 



