580 CONGLOMERATE ROCKS. 



This is primary and local in some cases, as in 

 Kerrera, and is noticed under the head of Argil- 

 laceous Schist. It also however occurs as a 

 secondary rock ; the parts having been trans- 

 ported, but, from their nature, being incapable of 

 showing decided marks of that transportation. 

 It is thus found in the Isle of Man. 



F. Consisting of chlorite schist, and formed in 

 the same manner as the last variety : local. 



This rock is primary, and accompanies com- 

 mon chlorite schist. Although it is to be ex- 

 pected that similar conglomerates of micaceous 

 schist will be found, they have not as yet fallen 

 under my observation. 



G. Fragments of the different trap rocks re- 

 united by finer particles of the same. 



a. With angular fragments. 



Trap tuff and noticed under the head of the 

 Overlying Rocks ; local. 



b. With rounded and angular fragments 



together. 



This is a conglomerate of transported mate- 

 rials, but is limited to the vicinity of trap rocks, 



