ClfAP. 8.] W. BLANFORD, WESTERN INDIA. 4-3 



that it is frequently almost impossible to determine exactly where that 

 boundary should be drawn. Within the tract occupied by the metamor- 

 phic rocks^ quartzites which have in no way the appearance of outliers 

 occur in several places, as near Meerwania, and again west of Jumboo- 

 ghora. In the latter case a true conglomerate containing large rolled, 

 pebbles of quartzite, kc, and very similar to the conglomerate already 

 described as occurring a little further to the north-west, is found amongst 

 the metamorphic rocks. The same apparent passage occurs south of 

 Soorajpoor, the Champaneer beds being more crystalline near the 

 boundary. There is, of course, the possibility of faults accounting to a 

 great extent for these apparent passages, and when rocks do not differ 

 greatly in mineral composition, apparent cases of transition are very likely 

 to occur, but still there is, in places, an apparent gradual change, both 

 along the line of strike and across it, from Champaneer beds into 

 metamorphics. 



Chapter 8. — Vindhyan Series. 



Only the extreme south-west corner of the immense tract covered 



by this formation is included in the present 

 Small portion or Via- •' '• 



dhyan area included. map."^ 



The principal character of the Vindhyans of Bhopal and the Dhar 

 forest is the prevalence of a very compact deep red or purplish rock, in 

 which the original texture of a sandstone has almost entirely disaj)peared. 

 It is purely quartzose, translucent, and has at times almost the appear- 

 ance of being crystalline quartzite. On its fracture it has the vitreous 



* As the whole of the Vindhyans will shortly he descrihed at length by Mr. Mallet, 

 who has had opportunities of studying them throughout then- area, and who has examined 

 the small exposui-es of them comprised in the "Western Nerbudda country, it is unnecessary 

 for me to do more than indicate their general characters in the briefest manner, especially 

 as neither Mr. Wynne nor myself had ever seen the Vindhyans before we were engaged iu 

 mapping this tract. 



( 205 ) 



