IIUTAR PIELD : BARAKAU GROUP. 99 



At a short distance ou either side of the Daltonganj road-crossiug-, 



there are carbonaceous shales, those on the west 

 Abnormal top beds. 



including %" of coal. From the occurrence in other 



sections of certain peculiar beds towards the top, it at one time seemed pro- 

 bable that these were representatives o£ a group or sub-group between the 

 true Barakars and the Mahadevas in the portion of the Hutar field 

 which lies west of the Koel. In this particular section, however, the 

 beds seem to be normal Barakars. Owing to the steadiness of the dip, 

 this section and that of the neighbouring Hurtah river afford unusual 

 opportunities for measuring the thickness of beds intervening between the 

 top of the Talchirs and the bottom of the Mahadevas. Estimating the 

 average dip at 12° and the horizontal distance 2|- miles, the thickness 

 would be about 2,750 feet. This is the maximum thickness at the 



centre of the basin, and it is much in excess of 

 Thickness. +, « 



that found elsewhere. 



The most important of the Supahi tributaries is the one which rises 



in the Hurtah or Hudur hill, and bears the same 



Section in Hurtab. . 



name. The section which commences near Titaro 

 (Toleh of map), a small Aguriah hamlet, is as follows : — 



Talchir shales. 



Grits and shales of uncertain thickness. 



1. Flaggy shales, rolling, say 800' at 5°= . . . .70' 0" 



2. Sandstones, 400' at 5 « = . . . . , . 34' 9" 



3. Sandstone and sandy shale, part concealed, 220' at 10°=^ 38' 2" 



4. Seam, dip lO" 3' 0" 



5. Sandstones - 17' 4" 



6. Seam — 



a. Stony carbonaceous shale . . . . 2* 2" 



b. Coal 1' 2" 



c. Carbonaceous shale 0' 10" 



d. Coal 1' 0" 



5' 2" 



7. Sandstones and grit, 27' at 15^ = . . , , . 6' 10" 



8. Coal . 0' 2" 



9. Grit 5' 0" 



Here there is a slip and repetition of section — 



Seam — A This illustrates the rapid 



CoaZ, seen , . .1' 6w changes in character of beds 



Sandstones . .17' 5" V which so frequently take 



Coal . . .0' 2" I place. 



Grit ■ . . .10' 0"j 



( 99 ) 



