5°4 



REGINALD A. DALY 



associated directly with any particular theory of intrusion. There is 

 pressing need for such a term signifying these large bodies, and one 

 that will not commit the field worker to any theory of origins. The 

 later use of the term ''batholith" is therefore to be commended, as 

 it renders that term much more useful in actual field descriptions 

 where these cannot be accompanied with certain proofs of the Durch- 



Fig. 9 



schmelzung theory as there applicable. In the proposed classification 

 of intrusives the term "batholith" will have the meaning just noted. 



A simple batholith is one composed of material intruded in one 

 period of intrusion. (Fig. 9). 



A multiple batholith is one composed of material demonstrably 

 intruded in two or more periods of irruption, the material having 

 been derived from the same kind of magma. 



A composite batholith is one composed of materials demonstrably 



