Br. J. E. Marr — The Dufton and Keisley Groups. 483 



black limestones), the summit of wliicli is not shown, and above it 

 is a grey nodular limestone of the Keisley type, followed by a fault, 

 on the other side of which the Browgill Shales occur. This section, 

 therefore, also proves that the beds which we referred to the 

 Stanrocephalus Limestone are not above the Keisley Limestone. 



We now pass on to the important sections of the hill behind 

 Keisley hamlet. The accompanying plan, on the scale of 17^ inches 

 to the mile, shows the distribution of the rocks. The two faults 

 come together a little to the west of the plan, and no rock is seen in 

 the portion between them in the triangular wedge not included 

 in the plan. 



l^-i SkelgiU Beds. 

 (°o<='| Keisley Beds. 

 I : •.[ Dufton Beds. 

 Rhyolite. 



s = position of fossils in Skelgill Beds. 

 CRYST = Crystalline Limestone. 

 NOD. = Nodular Limestone. 

 J = position of fossils in Dufton Beds. 



Arrows (->) represent the dips, and crosses (x) show where observations were made 

 but no dips recorded. 



Fig. 1. — Plan of part of the hiU behind Keisley. Scale 17| inches to a mile. 



Two large quarries are now seen on the hill-side north of the 

 hamlet, of which the more easterly is termed " Old Quarries " on 

 the 25 inch Ordnance Map, while the westerly is simply marked 

 " Quarry." I shall refer to these as the east and west quarries. 



