SYNOPSIS OF PREVIOUS OBSERVATIONS. 25 



Belg-aum and on to Dbarwar, south of the area of this report. He com- 

 menced with an account of the alluvium seen at the junction of the 

 two rivers just named, and argued against the theory of the fluviatile- 

 origin. of the greater regur spreads, as also against the idea of regur 

 being a mere product of decomposition of trappean rocks. He pointed 

 out the fact that the trap rocks in weathering form a detritus of reddish 

 or coffee-brown color. 



The hornstone-breceia south of the Gatprabha attracted his atten- 

 tion ; also the highly silicious limestones further to the south-west. He 

 crossed the Sita Dongar range, which forms the eastern side of the 

 Kaladgi basin, en route to Bagalkot somewhere near Yerkal,"^ and 

 noticed the varying character of the silicious rocks ranging from coarse 

 conglomerates to fine, rippled quartzites. At the western base of the 

 pass he noted a dyke of " basaltic greenstone '* cutting through colored 

 argillaceous shales, converted into reddish, greenish, and brown- 

 colored jasper and bluish-white chert. These jasperized schists would 

 appear to belong to the jaspery hsematite-schist beds which form great 

 cliffs in the gorge of the Gatprabha at Yerkal. He crossed the Bagal- 

 kot bend of the Sita Dongar, and then visited the plains of Bagalkot 

 and Kaladgi, and described the limestones and shales there occurring, 

 together with the overlying laterite deposits, with his usual accuracy. 

 He did not, however, recognise the quartzites and conglomerates south 

 of the Bagalkot-Kaladgi road as being a younger series than those seen 

 in the Sita Dongar. The slate quarries at Katarki on the Mudhol road 

 and at Sittikeri south of Kaladgi, the former yielding good hones and 

 the latter fair roofing slates (really hard shales, for the lamination is 

 true bedding, not cleavage), were also visited by Newbold. 



From Kaladgi he proceeded westward via Lokapur, between which 

 and Hulkund he noted four dykes of greenstone intruded in the 



* I cannot, from Ms description, identify positively the pass by which he crossed the 

 Sita Dongar ridge, and did not myself observe the metamorphic action of the dyke 

 referred to immediately afterwards. 



D ( 35 ) 



