1918. ] The Charnockites and the Dharwars. 443 
VUI, p. 65). This interpretation would be about equivalent 
to admitting that the Charnockites and Khondalites might be 
igneous differentiates of one magma. The chemical com- 
position, entirely corresponding with that of a normal primary 
igneous rock without the slightest influence of sedimentary 
adjuncts in the case of the Charnockites, entirely corresponding 
with that of a sediment in the case of the Khondalites, 
is opposed to such an interpretation. The frequent, almost 
constant association of both types is a geological fact to 
of a stratified series, partly volcanic and partly sedimentary, 
best suits the recorded facts.! 
&s a continuation of King’s Chilpi-Ghat beds, and Ball’s 
Sakoli beds. 
There seems little doubt that the Khondalites of Ganda- 
mardan are the highly metamorphosed representatives of the 
clay-slates and argillites of the Sonakan series, the hornblende- 
f 
th € profuse association of sillimanite-bearing schists eos 
© Charnockites of Vizagapatam, Ganjam, and Kalahan ; 
their relative scarcity in some of the Charnockite outcrops © 
the cor that, with the exception of some subsidiary sass 
; inded aera the immense majority of Tas 
Tocks are ordinary igneous (voleanic) and sed i 
of iy been formed in the sales manner as the ogre ae haar 
entire. "ges, their specially characteristic crystalline fea 
Y due to metamorphism. 
