KALADGI SERIES. 137 



ellipsoidal masses^ unlike any of the older diorites seen in the gneissie 

 area. Their course is north-west-by-west to south-east-by-east, and they 

 show only in the centre of the valleys among the shales. 



In the absence of organic remains in the Kaladgi series, and from 

 the geographically isolated position of the basin it occupies, it is impos- 

 sible to correlate it closely with any of the other series rich in quartzites 

 which occupy such large areas in Central India and on the eastern side 

 of the Peninsula. The general resemblance in petrographical characters 

 to the Kadapa series has already been mentioned above ; but it remains 

 to be pointed out that the Kaladgi series also shows in many respects a 

 strong petrographical resemblance to the Gwalior (or Bijawur) series of 

 Central India, which formation Mr. King in his report on the " Kadapa 

 and Karnul formations "*' has already assumed as the probable equiva- 

 lent of the ^^Cheyair group,'' a well-marked sub-division of the 

 Kadapa series. Unlike the Kadapa and Gwalior series, the Kaladgi 

 formation contains no contemporaneous traps. 



The " peculiar bed'' of limestone with silicious bands overlying the 

 Par quartzites described by Mr. C. A. Hacket in his paper on the "coun- 

 try near Gwalior"t appears to offer a very close resemblance to the non- 

 brecciated parts of the silicious limestones occurring locally in the 

 Lower Kaladgi quartzites to the north-west of Manoli (see p. Ill), and to 

 various highly silicious beds in different parts of the Lower Kaladgi 

 limestones proper, in some of which — as, for example, that to the south 

 of Kaladgi at Yendikeri — the chert bands assume the appearance of 

 typical quartzites, which again pass into a distinctly oolitic silicious 

 rock strongly resembling the oolitic silicious bands occurring in the 

 Poolumpett group of the Kadapa series at Subrajpur (Soobrajpoor), three 

 miles north-west of Rayalchera station on the north-west line of the 

 Madras Railway. 



* Memoirs of the Geological Survey of India, Vol. VIII, p. 291. 

 t Records of the Geological Survey of India, Vol. Ill, p, 35. 



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