44 KING : COASTAL REGION OP THE GODAVAUI DISTRICT. 



Lameta beds represent the Bagh group, they are probably more ancient 

 than the Pungadi infratrappeans. Still the balance of evidence is rather 

 in favour of referring the latter to cretaceous times than to tertiary. 

 They may be of intermediate age. 



Traps and intertrappeans. — The Dudkrir beds are overlaid by coarse 



Overlap the infratrap- compact blackish-green basalts, which attain a 

 P eans - thickness of nearly 200 feet and extend far to 



the east and west, lapping on to the gneiss in the one case and the Tripati 

 sandstones in the other. About half way up this thickness of traps, 

 there is a thin band of fossiliferous limestones ; but this does not always 

 lie in the middle of them, or parallel to the strike of the Drfdkur beds 

 which have the greatest thickness of trap on them at their eastern end, 

 while there is again another thickening out of the traps at the western 

 extremity of the field to the south-south-west of Devarapili. At Dtfd- 

 kur there are only some 27 feet of trap between the Turritella lime- 

 stone and the intertrappean band ; while at the road crossing further 

 east there must be a thickness of 40 feet at least below the seam of 

 limestone as it passes round the spurs in the direction of Pungadi. 



In the valley south-south-west of Gowripatnam, the band of inter- 

 trappean limestone is about 4 feet thick ; and to the east of this, it thins 

 down to 2 feet in the direction of Pungadi. Towards Dudkiir it thickens 

 out to 8 or 10 feet. The seam is generally of two or three or more beds 



Thickness and litho- the roc ^ bern g vei T often a compact crystalline 

 lo &y- slightly magnesian limestone of white, pink and 



grey or greyish-green colours, but oftener grey ; at other times it is very 

 coarsely crystallized and fibrous in bands and seams of alternating crys- 

 tallized and fibrous structure with pearly lustre, or often, rudely nodular 

 and concretionary with a radiating fibrous structure. Then again the 

 rock is less crystallized, or dull compact, or soft and friable. All these 

 different structures and conditions are of course on the weathered out- 

 crop, or in the quarries where it is presumed that the more generally 

 crystalline character of the rocks becomes changed by exposure ; and 

 they are so irregularly distributed through the thickness that it is quite 

 ( 233 ) 



