36 BLANfOED: GEOLOGY OF NAGPtJR. 



the DamudaSj or they may be intermediate in age between the Damudas 

 and Panchets. 



Lameta or infratrappean. — This formation, as developed near Jabal- 

 pur, is fairly represented in the Nagpur country. The two sub-di-visions, 

 a and b, of Mr. J. G. Medlicott's memoir,* are represented respectively, 

 a by the sandstone under Sitabaldi hill, and h by the limestone of Kelod, 

 Chieholi, &c. The latter is, in both districts, the characteristic bed of the 

 formation. 



The re-examination of the Mahadeva rocks by Mr. H. B. Medlicott 

 has led him to the conclusion that they are much older than the Lametas. 

 To this I am quite disposed to agree, but I still think that there may 

 be a connexion between the Lametas and the Bagh beds as explained in 

 my description of the latter, f It should, however, be rfemembered that 

 the marked local unconformity between the traps and Bagh beds does 

 not appear, near Nagpur at least, to exist between the former and the 

 Lametas. 



I have, in the preceding pages, used the term infratrappean in pre- 

 ference to Lameta, because it better expresses the close connexion be- 

 tween these beds and the traps. Some of the intertrappeans seen on the 

 Seoni table-land and in the trap country west of Nagpur, consist of 

 precisely the same grey limestone with cherty masses which form the 

 most persistent and characteristic rock of the underlying group. As a 

 rule, the infratrappeans, or Lametas, are gritty, while the intertrappean 

 beds are not, but there are exceptions, and Mr. Hislop^sJ view of the 

 two being parts of the same group appears to be correct. 



* Memoirs of Geological Survey of India, Vol, II, p. 197. 

 t Memoirs of Geological Survey of India, Vol. VI, p. 54. 

 X Quarterly Journal, Geological Society, Vol. XVI, p. 159. 



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