1918,] The Charnockites and the Dharwars. 447 
“basic Charnockites, norite, pyroxenite ” group, chiefly close to 
the massive outcrops of Charnockite. Just as in the case of the 
massive Dharwar and Charnockite outcrops, the two groups of 
dykes in their distribution are mutually exclusive: once the 
region of Charnockite dykes is definitely entered, there are no 
more dykes of the epidiorite-pyroxene-granulite class ; once the 
region of the latter class of dykes is definitely entered, there 
are no more dykes of Charnockite. ; 
_ It is worth remarking that, amongst the epidiorite and 
Pytoxene-granulite group, there cannot be much difference 
between a Pyroxene-granulite and a charnockite. The fact 
of such dykes having been classified together with the epidiorite 
dykes is an instance in which rocks bridging over the charac- 
teristics of epidiorite and charnockite have been united in 
actual practice. 
_ te appearance of the map, as above mentioned, conveys 
the impression that the dykes of the epidorite and pyroxene- 
gtanulite group, traversing the Fundamental Granitic Gneiss, 
t has . en necessary to assign a post-Dharwar age to the 
eidiorite dykes. This explanation assumes that the original 
oor of deposition of the Dharwars is nowhere preserved. 
Such an assumption is difficult to understand. The Dharwars 
“annot have been deposited in mid-air. They must have 
oY the Fundamental Granitic Gneiss, and it is difficult to 
wnagine 10w the original floor of the Dharwars could have been 
ystematically stoped away or secondarily fused by a process 
would have respected no other rocks than the Dharwars 
emsel ves. 
a Usual] 
sturbance that the rocks have been subjected to, clearly 
