58 FOOTE ! GEOLOGICAL STRUCTURE OP THE EASTERN COAST. 



The second or Ongole group of patches of the plant-bearing* beds 



The Oneole °roup of consists of only two patches, the southernmost and 



patches, smaller of which lies 11 miles north-east of Ilavara 



and 6 miles west-south-west of Ongole. This patch is greatly obscured 



by the overlying thick cotton soil ; the only tolerable section found is 



Section south of Man- seen in a Sma11 Wel1 0n the east side of the road 

 gamur. leading from Konijadu (Conjadoo) to Santa- 



nuthatapad. The western side of this well shows the section illustrated 





=, -u <*> \* 



mm 



Fig. 3. Weii-sefltion south of Maflgatnttr. 



in the accompanying diagrammatic sketch. The base of the Hajmahal 

 rocks is here formed by a gritty red sandstone (4), resting on coarse, 

 highly felspathic granite (1) . This sandstone is seen to pass suddenly 

 into a singular rock (3), partly conglomerate, partly breccia, with a calca- 

 reous matrix enclosing quartz pebbles and fragments. On the opposite 

 or north-east corner of the well the bed consists of a coarse sandstone 

 ( 58 ) 



