PRODUOTUS— PURPLE SANDSTONE. 101 



to the European Rothliegende or Lower Permian. The series is 

 divided as follows : — 



Warcha Lavender clay> Speckled Sandstone. 



Dandot 



Olive sandstone. 

 Zone of Ccmw.la.ria laevigata. 

 Zone of Eurydesma alobosum, 

 Olive sandstone. 



Talchir .... Glacial boulder- bods. 



Th. Tschernyschew (Rec, Geol, Sum., Ind., XXXI, 116, 132, 1904) 

 regards these beds as about Middle Carboniferous. E. Koken, 

 in reviewing the question, supports the correlation adopted by 

 Noetling (Neves Jahrb. f. Min,, 1907, 483). 



Purana group.— Named by T. H. Holland (Trans. Min. Geol. Inst. 

 Ind.. I, 47. 1906). Group established to include the unfossilifer- 

 ous formations lying uneonformably on the schists and gneisses 

 of assumed Archsean age, including such formations as the Gwaliors 

 (Original), Bijawars, Cuddapahs, Kurnools and Vindhyans on 

 the Peninsula, and the supposed equivalent unfossiliferous for- 

 mations of the Outer Himalayas, such as the Baxa series, the 

 ' Carbonaceous ' system of the Simla rigion, the Mandhalis, 

 Jaunsar and Deoban systems. Eegarded as wholly or in part 

 pre-Cambrian in age, thus corresponding to the Keweenawan and 

 Anirnikie systems in America. 



Purple Sandstone Stage. — Name commonly used on account of 

 the prevailing lithological type for the lowest division of the 

 Cambrian beds in the Punjab Salt Eange. Also named by F. 

 Noetling the Khewra stage (q. v.). 



Purple sandstone zone. — Descriptive name used by C. S. Middlemiss 

 (Director's General Pieport, 1899-1900, 143) for a series of dark brick- 

 red or chocolate-purple, sandstones and shales with occasional 

 conglomerates appearing to have been folded in with and let 

 down by faults among the underlying limestones and occurring 

 in the Southern Shan States and Karenni. T. H. D. La Touche 

 (Mem., Geol. Surv., Ind., XXXIX, 306. 1913) looks upon those 



