IS.') 



•n plenty, though both constituents are. as above remarked 

 .consp.cuous by their absence in the true Borradale Vo:a:ic 



Another rock that is marked by the absence or by the paucity 

 ofmicazsthe Penrith Sandstone; which in this re^.ect offers a 

 i^arked contrast to nearly every other sandstone yet known 



The senes of changes that have resulted in the development of 

 nuca,nd,e metamorphic series around the Cawda Granite have 

 been fully described by the late Mr. Ward in No. 1.5 of the 

 e«.^././...../ .///. G.o^^.a^ Society ,,d elsewhere, and need 

 not therefore, be referred to in detail here. I may, however 



sTut:::" t ^'' ''''-'-' '- -^-^ ^^ ^^^^^ 



structure :n these rocks as something quite independent of the 

 ong,naI planes of bedding, instead of regarding it, as many other 

 have done both before the date of his observation and since, as a 

 case of foliation comcident with the original bedding of the rock. 

 This last view does not, of course, apply to the intensely-crumpled 

 amin^ seen in the mica schist on the flanks of Carrick just below 



have been at work in obliterating the native structure of the rock 

 Mica of metamorphic origin, or what I believe to be such, occurs 

 ISO in certajn dyke-like rocks in the Skidda Slates near Ousb 

 I cannot help thinking that some of these seeming dykes may 

 represent highly metamorphosed interbedded bands of submarine 

 tuff^^representing the seaward equivalents of part of the Borradale 



Except in the granites and rocks of that kind there are few 

 exaniples of mica crystals that call for special remark. But in thi 

 granitoid rock exposed near the west face of Dufton P.ke, and in 

 some intrusive rocks of the same general nature exposed el sew e e 

 2 that neighbourhood, crystals of Muscovite, rhombic in form 

 may be found of an inch or more in length. 



as they were the o.-l;,i„aI ^G^^et'S^^''^ ^^^^ :,^::; --' -P«ially 



