8 BLANFOKD ; GEOLOGY OF NaGPUR. 



in the Nag Nadi^ about half a mile west of the spot where the stream 

 crosses the Chanda road, and north of Sitabaldi they were detected in 

 one place just north of the high road to Kdmthi. To the east of the 

 city the country was not examined. 



To the north of Nagpur a low range of metamorphie hills com- 

 mences about a mile east of Kamthi, and extends 



Korliadi. ^ 



to Korhadi. The rock is chiefly a granitoid gneiss. 



The foliation to the eastward is about north-east — south west^ with a dip 



to the south-east, but north and west of Korhadi village it runs north 



and south, and is vertical. At this spot a considerable quantity of 



crystalline limestone occurs, being the rock which Mr. Hislop described 



as a sub-division (D) of the sedimentary formation altered by the 



plutonic rocks of the neighbourhood.* The strike, as abovementioned, 



differs entirely from that of the gneiss a httle farther to the east, but 



to the west towards Mahadiila it changes again to the same strike as to 



the eastward. A little limestone, here containing 



serpentine^ is again seen west of the small village 



of Mahadula, and again about a mile still further to the westward, 



rather more than half a mile south-east of the village of Giimthula. 



Gneiss is seen at intervals in the bed of the Kolar from the 

 neighbourhood of the Korhadi hills to the village 

 of D£higaon Rangari. To the north of the Kolar 

 the country consists of sandstone, mostly, however, concealed beneath 

 alluvium, but near the Kanhan, and in the Pench, metamorphie rocks 

 are exposed at intervals. To the north-west, they are best seen near 

 Khapa and Kelod, where the strike is east and west and the dip south. 



* Mr. Hislop was probably chiefly induced to class this limestone with the sandstones 

 from the latter having been considered by Voysey and Maleolmson representative of their 

 ' diamond sandstone" (the Viudhyau or Kadapa series of the Geological Survey Classifica- 

 tion), which, in the Krishna and Godavari valleys and in Band^lkand, is associated with 

 limestone. 



( 302 ) 



