MEMOIRS 



OF THE 



GEOLOGICAL SURVEY OF INDIA 



The Upper Gondwanas and other formations of the Coastal Region 

 of the Godavari District. By "William King, B. A., Deputy 

 Superintendent {Madras), Geological Survey of India. 



CHAPTER I.— GENERAL DESCRIPTION. 



Introductory. — The great tract of Gondwana rocks occupying the 

 lower half of the Godavari valley is very conveniently and advantag-eously 

 divisible into two areas, which are separable, physically, by that portion 

 of the Eastern Ghats sometimes called the Golgon.da range of mountains, 

 and, geologically, in that the upper division of this formation is in great 

 part of marine origin to the south of the hills while there are only river 

 and lacustrine members of the series in the upper part of the valley. 



The portion below the Ghats, or, in other words, the coastal region, 

 also corresponds to what is called, in local parlance, the lower division of 

 the Godavari district ; and this is the area treated of in the present 

 Memoir. 



The principal formation to be described is thus a part, though in 

 many respects a very important part, of its development on the Coro- 

 mandel or Eastern Coast in the patches already examined or described 1 



1 See Parts 1 and 2 of this Volume, and Vols. IV, Parts 1 and 2, X, Part 1, Memoirs 

 Geol. Surv. of India; also Records, Geol. Surv. of India, Vols. Ill, p. 11, XI, p. 249, XII, 

 p. 187. 



( 195 ) 



Memoirs of the Geological Survey of India, Vol. XVI, Art. 3. 



