ARCHiTJAN. 
100 
exception being that which ascriboH the contortion to th(! close 
of the Cuddapali period. There is, liowover, aiiotlier poHHibility. 
If it could be shown that the Sat|)uras do not owe their ehiva- 
tion to the same processes as led to tlic folding of their constituent 
gjieisses and schisfs, but to a system of ])arall(d boundary faults 
at some subsequent period, then one could no longer maintain 
that the Satpura range was first formed as an orographical 
feature in Archaean times. It might then have owed its upheaval 
to any of the principal systems of earth movements by which 
the Peninsula has been affected since Archaean times. ^ Should 
the latter alternative prove to be the true one, evidence in favour 
of it will probably be obtained in the course of the 
geological survey now being carried out in the Central 
Provinces. I put forward these advance specidations concerning 
the possible mode of formation and age of the Satpuras, firstly 
because they seem naturally to arise from the discovery of the 
great similarity, both petrographical and stiuctural, between the 
Archa3an rocks of Pendra and Korea and those of Chhindwara, and 
secondly in order to indicate what seems to me to be the present 
state of the problem. 
* The idea advanced in another paper, on the physical activity of the Hasdo 
River, that at the beginning of Talchir times there was already a breach in the Sat- 
puran protaxis where Korea now lies, sets, if correct, an upper limit to the age of this 
range. 
o2 
