KALADGI sehiks. 127 



handsome pattern. These beds join those described in the Yendikeri 

 valley^ already described at page 117, and are the last requirino- men- 

 tion in the survey of the lower limestone series. 



The shales which accompany the limestone series are^ consequent 

 upon their greater softness and on their position, 

 much less well exposed than the limestones, than 

 which^ moreover^ they appear to be much less developed. They 

 are most largely developed above the limestones, and indicate an approach- 

 ing return to littoral conditions in the sea (or lake) they were formed in : 

 the littoral conditions, when fairly at work, having given rise to the 

 overlying conglomerates and quartzites, the great talus formation around 

 which conceals the shales in most places. 



The most striking and one of the most prevalent forms of shale is a 

 „. , , , softj earthy, calcareous variety of light purple (vio- 



s^^^^^- let, chocolate, or lavender color), which is generally 



seen between the upper beds of the limestones and the overlying 

 quartzites. These are to be seen in numerous sections, e. g., on the west 

 face of the Cromlech hill close to Kaladgi, at Govindkop, east-by-south 

 of the same place; also at Truchigeri (Troocheegeree), east of Kaladgi, 

 and at Anathilli, five miles west-by-north of Bagalkot. At Arrakeri, 

 underlying the northern quartzite wall of the synclinal valley, the 

 (violet) chocolate shales are also to be seen. To the south-east of Kaladgi 

 the purple shales are to be seen north of Kerkalmatti (Kurkulmuttee) , 

 where they are highly ferruginous, being richly charged with red hsema- 

 tite. At Kakalgaon (Kukkulgaon) , half-way between Kerkalmatti and 

 Kattigeri (Kutteegeree), they are again of the ordinary pale-purple 

 color; they form two small outliers capped by thin plateaux of the 

 upper quartzites. They occur largely to the north and north-west of 

 Kattigeri. They show also at Aniwal and Batkurki (Butkoorkee), 

 abutting against the faulted boundary of the lower quartzites. 



Purple calcareous shales occur in two or three places at the base of 

 the limestones, as at Bagalkot and in the north-east corner of the 



( 127 ) 



