ARcn;r<;AN. 
164 
the north, is a boatttifully symmetrical pointed cone. T was 
not able to visit it, hut, according to Hufihes' niaj), it consists 
of a baseinont of Arclia\an rocks with a strip of Talchirs climbing 
up from the low ground (o the north to form the summit of the 
hill and deseendinif a.nain to the south. On an one-inch <,'eolof;icaI 
map of this area it would be possil)le to represent many more 
small Arch.Tan inliers than are shown on the map appended 
hereto. 
It will be seen that 1 have been able to match most of the 
crystalline rocks collected in Korea with more 
Easterly oxtonsion " j g;,^;,^,, f^^^ Chhindwara 
of the Satpuras. 
district. Except in the Khargaon inlier, 
the strikes, which vary from E. N. E. to E. S. E., agree with 
the idea that the foundations of Korea consist of an east- 
north-easterly extension of the crystalline core of the Satpura 
Range ; and the dips and strikes, and in many respects the 
characters, of the rocks observed in the Pendra zamindari to the 
west of Korea do not conflict with this idea. 
This suggestion that the crystalline core of the Satpuras (which 
we may term the Satf uran prntaxis) continues as a geological entity 
as far as Korea, naturally leads one to speculate on how much 
further to the east this protaxis continues. In the absence of any 
personal acquaintance with the country east of Korea, I cannot 
at present discuss the question further, except to suggest that the 
Ranchi plateau will probably be found to be a portion of the 
ancient Archa3an range of hills, the western portions of which now 
form the core of the Satpuras. 
Although we cannot yet draw any decided conclusions as to 
the age of this Satpuran protaxis, yet some 
cofr °^ ^^"^ tentative ideas will not be out of place. If 
there be any connection, as seems probable, 
between the folding of the gneisses and schists constituting this 
core and its elevation as a mountain range, of which the core 
probably forms the denuded remnant, then we cannot accept 
the suggestion^ advanced on page 491 of the Manual of Geology 
of India {2nd edition, 1894) that : — 
" The close of the Cuddapah epoch appears to have witnessed a commence- 
ment of the earliest of those earth movements whose effects on the surface 
contours and geography of India are still prominently noticeable." 
1 I am indebted to my colleague, Mr. Fox, for drawing my attention to this passage. 
0 
