LOWER TRANSITION ROCKS. 103 



ridges they have both been eroded to great depth and furnish sections 

 of exceptional interest, which are described further on. 



The northernmost extremity of the ridge forms the bare conical 

 Jonnel Rashi hill close to Hospet, which is cut 

 off on the western side by the Rdmanagundi pass 

 from the Rdman Drug ridge. To the north of the ridge the beds are 

 cut off short by a great fault indicated by the great run of brecciated 

 quartz which runs along the boundary by some four miles. Four well- 

 marked haematite beds cross the little ghat by which the Sandur road 

 enters the synclinal valley. Three of these beds run up into the 

 Jonnel Rashi, trend northward on its summit, and are lost on its 

 northern base, being doubtless cut off by the fault above mentioned. 

 At the western end of the summit the beds dip from 70 to 75 west. 

 Jonnel Rashi is far higher than the extreme north end of the Raman 

 Drug ridge. Eastward of Rampur ghat 1 the main ridge rises very 

 rapidly and steeply till it is crowned by Jamba- 



Tambanath Konda. , _ , . 



nath Konda, a very bold and conspicuous peak 

 2,980 feet high. South-eastward of this the ridge widens gradually 

 and rises simultaneously, so that where the north-east ridge looks 

 across to Raman Drug in a southerly direction the two ridges appear 

 to be equally high. 



The stratigraphical sequence in the Ramgol ridge is best illustrated 



Papinayakanhalli in the lon g ravines cut by the streams starting 



section. from the main ridge and flowing northward. The 



most westerly section, and the most complete, taking it all in all, is 



that met with in the ravine south of Papinayakanhalli. The sequence 



here seen is the following : — 



15. Haematite rock, very jaspideous, much crumpled and breceiated. 

 14. Trap ? — a greatly decomposed earthy rock of purple colour. 

 13. Haematite rock, very thick, brecciated, with small quartz veins. 

 12. Trap ? — an earthy green and purple rock. 



11. Schists, argillites — chocolate, and sometimes lavender coloured. 

 10. Schists, green, chloritic ? — of great thickness. 

 9. Haematite quartzite, a thin poor bed. 



1 Rampur ghat is a low saddle on the south-eastern side of the Jonnel Rashi, and 

 is crossed by the high road leading from Hospet to Raman Drug and Sandur. 



( 103 ) 



