62 GRIESBACH : B.AMKOLA AND TATAPANl COAL-FIELDS. 



4. Grey marls, micaceous, alternating with j'ellowisli- 

 coloured soft sandstone ; the beds of the latter are 

 only about 1" thick near top ; towards base the 

 divisions widen and sandstone predominates ... 3' 6" 



3. Dark-grey bituminous shales ... ... 6" 



2. Grey micaceous shaly sandstone with — ... 4' 



Glossopteris indica, Schmp. 



1. Grey shales, base not seen. 



Total ... .13' 0" 



About three miles further down the Satnachna nullah west of Dhonda 

 villag-ej I found another exposure, in descending order : 



6. Tine marly 3'ellowish-brown sandstone ... ... 1' 4" 



5. Micaceous shales with carbonaceous markings ... 2' 6'' 



4. Marls ... ... ... ... 1' IC 



3. T^odular iron ore baud with reddish shales, contain-^ 

 ing — ... ... ... I 



. . ! 0' 3" 



Olossopteris indica, Schmp. ... r 



,. communis, Fstm. ... J 



2. Clay shales ... ... ... ... 0' 6" 



1. Grey micaceous shaly sandstone with coaly markings, 



base not seen. 



There is very little doubt that these beds all belong to the Earakar 

 group ; both the lithological character as well as the palseontological 

 evidence point in that direction. 



Crossing over the level jungle country from Dhonda to Narola, I 

 came successively across felspathic grits and ochre-coloured shales, which 

 probably belong to the Raniganj series, as seen in the Morne river 

 near Parasdiha, the beds of which section strike across that part of 

 the country, but no absolute certainty can exist in the absence of a good 

 section. The micaceous clay shales and red grits with purplish clays of 

 Narola itself may in that case be Panchets, immediately underlying the 

 Mahadevas. It is tolerably certain that all the groups of lower Gond- 

 wanas are represented in the patch between Noudiha and Ramkola, but 

 the beds seen there are merely detached portions of rocks, surrounded on 

 all sides by trap dykes and intrusive sheets, and in many places are 

 quite altered by the trap flows into a brick-like mass. The shales with 

 ( 190 ) 



