318 



GEOLOGICAL SURVEY 



the Kistna river, it will probably supply Madras very 

 advantageously. 



During the same season Mr. King determined a fact sus- 

 pected by Mr. Blanford that an outcrop of Barakar rocks 

 exists some 20 miles west of Rajahmundry, at Beddadnol 

 but no coal outcrops could be traced after the closest exami- 

 nation of the surface. Despite this, Mr. King recommended 

 that borings should be put down and fixed the sites for the 

 holes which were very effectively executed by Mr. Vanstavern, 

 the Executive Engineer, D.P.W. The borings showed the 

 existence of six seams of carbonaceous clays and coaly shales ; 

 unfortunately none were at all fit for fuel. The results being 

 so unsatisfactory, and the increased knowledge gained not 

 pointing to likely improvement by extended tests, Mr. King 

 in 1876 advised the discontinuance of further attempts by 

 boring. 



Mr. King's survey of the Grodavari country was rewarded 

 by many other interesting results, e.g., he was enabled to 

 divide the'TJpper Grondwana formation into three well-marked 

 divisions- 

 Trip etty sandstones. 

 Ragavapuram shales. 

 Golapilly sandstones. 



Like the more southerly Upper Grondwana beds along the 

 coast, these are of marine origin. They occur as a belt some 

 10 to 15 miles wide running east-north- east from near Ellore 

 nearly to the right bank of the Grodavari, a few outliers 

 occurring at Innaparazpolliam in the south of Yizagapatam 

 District. The Tripetty sandstones contain inter alia two 

 Trigoniee (T. smeei and T. ventricosa), both characteristic of 

 the Umia beds of Cutch, the latter shell being also very 

 abundant in the Uitenhage beds in South Africa. 



The Ragavapuram shales contain many vegetable remains, 

 together with ammonites and other shells. Many of the 



