424 Mr. Brockbank on 



Whitehaven coalfield, which has not hitherto been correctly 

 described, but this aspect of the question I leave for a future 

 paper. I found the same breccia occurring in a bore hole 

 now being made at Messrs. Ainsworth's mines at Winder 

 to the last. I also traced it for above a mile in the neigh- 

 bourhood of Gosforth, where it is not shown on the Geological 

 Survey Map. It is a most important matter, as wherever 

 the Permian breccia occurs, there is a probability, in this 

 Whitehaven district, of the occurrence of hematite ore 

 beneath it. In the Gosforth district it holds out a promise 

 of a workable coal field between that village and the sea. 



Section at Frizington Hall, Cleator Moor, 



By Bore Hole made by Vivian Boring Co., i8go-i. 



Thickness of Depth from 



Strata. Surface. 



Feet. Feet. 



22*o Surface Clays 22*0 



20'o Permian breccia made up of angular frag- 

 ments of Silurian and Volcanic rocks, 

 and Limestone cemented with Hema- 

 tite. The Limestones contained fossils 

 similar to those seen in the Spirorbis 



Limestones 42*0 



9*4 Red Shales 51*4 



7-0 Mottled Shales 584 



9*2 Soft purple Sandstone with Mica specs ... 67*6 



4*o Mottled, Purple and Green Shales 71*6 



12*8 Rotten Red Shales 84-2 



26-11 Red Shales iii'i 



3*9 Reddish Limestone — with Spirorbis and 



Ostracoda (Upper Coal Measures) ... 114*10 



io*8 Purple Sandy Shales 125*6 



1 1 'o Conglomerate — like the Brecciated Marls 

 at Slade Lane, Levenshulme, with 

 Limestone Pebbles and cherty frag- 

 ments, cemented with Hematite ... 136*6 

 6'o Grey and Pink Mottled Shaley Sandstones 142*6 



