DAMUDA SERIES. 9 



III. — Damuda Series. 



Regarding this series there are several new facts to be pointed out 

 which will be highly interesting to those engaged in unravelling its 

 relations to the formations usually associated with it, and the relations 

 which its subordinate groups bear to each other. 



It has already been assumed that the Damiidas are unconformable 



to the Talchirs. Unconformity, however, also 

 Unconformity. 



exists between the upper and middle divisions of 



the Damuda, and again between the Damudas and Panchets. The 

 evidence to establish unconformity between the Barakar and Rani- 

 Evidence of uncon- ^^^J g^o^ps IS clear and distinct, and wiU be 

 formifcy clear. £^jjy referred to when describing the structure 



of the country in the neighbourhood of Hosir and Sarum. 



Although a break has been discovered between these two sets of beds, 



No break between ^^othing of the kind has been made out with 



Ironstones and Baratars. respect to the Ironstones and Barakars. Conform. 



ity exists wherever the two are seen in contact, and they appear to 



be closely connected with one another. ' 



The Upper Barakars are invariably transition beds, ironstones and 

 carbonaceous shales being interstratified with coals. 



The division into Barakars and Ironstones is nevertheless clear 



T.. . . - , , upon litholoffical grounds, notwithstanding" the 



Division of Ironstones ^ o o •» s> 



and Barakars. existence of passage beds ; and as far as observa- 



tions have gone, they prove that no coal is ever found in the distinctly 

 middle group. Coal always forms an approximate boundary line, and 

 shows the existence of the Barakars, whether we are engaged in 

 endeavouring to separate its beds from those of the Talchirs below, or 

 the Ironstones above. 



The discovery of plants has been very limited 



Fossils. J r J 



in all the groups. A few varieties appeared to 

 indicate a more close affinity with the fossil flora of the Talcheer field 



( 47 ) 



