28 MALLET, VINDHYAN SERIES. 





Lower V i n d h y a n , 



11. 



Limestone. 



10. 



Shales. 



9. 



Limestone, 



8. 



Shales, sandstone. 



7. 



Limestone. 



6. 



Shaly sandstone. 



5. 



Porcellanic shales. 



4. 



Trappoid beds. 



3. 



Porcellanic shales. 



2. 



Limestone. 



1. 



Concnlomeritic and calcareous sandstone 



The Sirboo shales derive theii* name from an outlying" hill of the 

 Bundair plateau north of Amarpatan ; the GunoOrgurh from a hill fort 

 north-west of Hoshungabadj in which locahties the respective sub- 

 divisions are finely exposed. The Jheeree are called after a town in the 

 Gwalior country, situated near the foot of the escarpment which marks 

 the out-crop of these beds ; the Punna from the well-known town in 

 Bundelkund ; while the hill fort of Bijigurh gives its name to the -shales 

 of the Kymore group, which are weU seen on the slopes of the hill where 

 this stronghold is built. 



( 28 ) 



