VENIvATPUR— VIZIANAGRAM. 



123 



7. Limestone. 



6. Shaly sandstone. 



5. Porcellanic shales. 



4. Trappoid beds. 



3. Porcellanic shales. 



2. Limestone. 



I. Conglomerate and calcareous sandstone. 



P. N. Datta (Rec, Geol. Surv., hid,, XXVIII, 144, 1895), from 

 results obtained in the Son valley, proposed to divide the Lower 

 Vindkyans as follows : — 



IV. Rohtas= Sub-divisions 11, 10 and 9 of Mallet. 

 III. Kheinjua = Sub-divisions S, 7 and 6 of Mallet. 



II. PorceUanic = Sub-divisions 5, 4 and 3 of Mallet. 

 I. Congloineratic=Sub-divisions 2 and 1 of Mallet. 



E. Vredenburg (Rec, Geol. Surv., Ind,, XXXIII, 259, 1906) pro- 

 posed the following new grouping of the Vindhyan beds on ac- 

 count of the discontinuity of the minor sub- divisions recognised 

 locally : — 



Bhander 



Betwa 



Haveli 



Sandstone. 



Shales and limestones with sand- 

 stones. 



Tons (including Rewah .. Sandstones with subordinate 

 and Kaimur). shales and limestones. 



Ken 



Son (the old Lower .. Shales and limestones with sub- 

 Vindhyan). ordinate sandstones. 



Virgal beds.— Name used by W. Waagen (Pal. Ind., Ser. XIII, Vol. 

 IV, Part 2, 241, 1891) for the middle division of the Middle Pro- 

 ductus Limestone of the Punjab Salt Eange, and regarded as 

 about equivalent to the Rothliegende of Europe. The village 

 of Virgal (32° 27' ; 72° 7') is about 5 miles north-east of Warcha 

 in the Shahpur district. 



Vizianagram gneiss. — Massive, grey quartzo-felapathic gneiss only 

 very slightly foliated, forming rounded hummocky hills near 

 Vizianagram (18 7' ; 83° 28'). Veins of white murchisonite are 



