BALL : GEOLOGY OF AURUNGA AND IIUTAR COAL FIELDS. 



Section at Toobed, 



.North-west of Toobed, in the bed of the Sukri, there are the already 

 mentioned sandy gneisses striking east-north- 

 east, and 35° north of east ; these have been cut 

 into a deep gorge by the river, close to the mouth of which they are 

 overlaid by red and white shales, after which follow a number of seams 

 with dip to east. If not cut off by the east and west fault as is represented, 

 we should here have evidence of great unconformity between these beds 

 and the Eaniganjes, but the fault, as will presently be shown, is very 

 distinctly marked. The following descending section was measured 

 in the reaches of the Sukri to east and north of the village of 

 Toobed ; though extending from the sandstones of Raniganj age to the 

 gneiss, it is of no use as an absolute measure of thickness, as some 

 beds of the Barakar sequence have certainly been cut out by the 

 flTult :— 



North bank' 



Descending Section in the Su/cri at Toobed. 



/Sandstones (Eaniganj). 

 Interval, wherein the fault probably occurs. 

 Blue and carbonaceous shales with sandstones, perhaps 

 150' in all, but rolling and, where repeated, dip- 

 E.-S.-E. 10°. 

 Section — 



1. Grit sandstone 4' 



2. Blue shales and sandstones, very variable . . 10' 



3. Coal 3" 



( 4. Same as No. 2, about 15' 



5. /S'eawi,shalycoal,dipS.-E.10°<15° . . . .10' 



6. Sandstones and shales . . . . . . 8' 6" 



7. Seam, 850' at say 5° = . . . . . .77' 0" 



This seam, nearly flat in places, certainly contains 



some fair coal, but owing to its sodden decom- 

 posed condition it is impossible to give details. 

 Dip changes from ,S.-E. to E.-S.-E. I 



r 8. Shales 4' 



North bank \ 9. Seam, covered, about 100' at 5° = . . . .8' 8" 

 C 10. Yellow and white shales . , . . ' . .5' 



( 68 ) 



South bank, 

 opposite 

 mouth of 

 stream. 



