62 



FOOTE .* GEOLOGICAL STRUCTURE OE THE EASTERN COAST. 



Uppu Gundur hill. 



ridge of hard shale about three-quarters of a mile 

 in length. The strike of the ridge is north-by- 

 east to south-by-west. To the north-east and 

 south it dies down under the great spread of 

 cotton soil which locally covers the coast allu- 

 vium. To the south-west it sinks into a low neck 

 of ground by which it is connected with a low 

 broad-backed hill close to 

 the village of Uppu Gundur 

 (Ooppoo Goondoor), which also consists of beds 

 of hard shale, which are nearly everywhere bare 

 and devoid of soil and vegetation. The two hills 

 form a peninsula jutting into the great alluvial 

 plain. To the west the ridge is joined by a low 

 neck with the western half of the Vemavaram 

 patch. 



The section given below shows the position of 

 the beds seen in the central part of the Vemava- 

 ram ridge. 



The beds shown in this section, which coin- 

 cides with a low depression 

 crossing the shale ridge a 



little to the north-west of the village, follow in 



descending order as below : — 



Details of section. 



2, 



Shales, purplish. 

 Do., huffy. 



Do., softish, brown, white, and purple. 

 Do., hard, with red and brown sandstone partings, 

 do., partly flaggy, with sandstone partings, 



vax-iegated. 

 thin, flaggy, rather hard, buff and white, 

 "fish bed." 

 Do., sandy, mottled. 



Do., 



Do.. 



1. Sandstone, shaly, buffy. 



