82 f OOTE : SOUTH MAHRATTA COUNTEY. 



basin has been but imperfectly broken throug-h, and forms a great barrier 

 reef across the river bed. The succession of beds here seen is the 

 following : — 



c. Breccia beds ; a jaspery variety of the ''dirty breccia." 

 6. Quartzites j grey and salmon-red. 

 a. Conglomerates and grits. 

 Granitoid gneiss. 



The grit beds are generally of coarse texture ; like the conglomerates, 

 they consist of white and greyish-white quartz pebbles and red felspar 

 debris. The matrix in both is purplish or grey in color. 



At Ramapur, a mile and a half south of the Sitamani gorge, 

 the section differs considerably from the foregoing ; the conglomerates, 

 which are of great thickness at Sitamani, being absent. The base- 

 ment beds are grits of no great thickness, overlaid by quartzites of 

 salmon, red, and purple-brown colors, which are greatly rippled in parts. 

 The gritty beds rest on granitoid gneiss, traversed by numerous dykes of 

 dioritic trap, both large and small in size, but all older than the Kaladgi 

 rocks. 



g. Nirgimdi Hill Section. — From the extreme north-east point 

 of the Kaladgi basin at Nirgundi (Neergoondee) westward for a distance 

 of seventeen or eighteen miles the northern boundary of the basin is 

 formed by a fault by which the rocks forming the basement series are 

 thrown down and abut against the gneiss. All the Kaladgi rocks which 

 once lay upon the gneiss northward of the Hne of fault have been 

 denuded away. There is no section in which the dislocation of the 

 rocks is actually visible, but the sketch section below demonstrates 

 clearly that a very considerable dislocation exists. The succession of 

 rocks seen in the corner of the basin north of the Krishna differs 



( 82 ) 



