104 ball: geology of aurunga and hutar coal fields. 



directly overlie normal Barakars. So that were the former really 

 distinct, there would be a good deal of unconformity which would have 

 to be explained away. Regarding them as being merely local varieties 

 of Barakars would get over the difficulty of their not appearing in some 

 sections. A dotted line on the map indicates the limits within which 

 these rocks have been observed. 



Still another section of Barakars is afforded by the Supahi where 



Section in Supahi ^^ traverses a small area of those rocks which are 



river a mda. ^^^ ^q -^^ ^ £^^l^ ^^ ^^^ extreme west end of the 



field. The following is the measured section in the Supahi at Binda 

 from north to south, descending, dip 10°, to north : — 



Gneiss faulted. 



1. Interval . . .33' "| f 5' 9" 



2. Grits, part concealed, 28' ).atlO°= . . -^ 4' 9" 



3. Seam {vide assay) 25' J L 4' 4" 



4. Sandstone 4' 0" 



6. Seam — 



Shale . . 0'4" 



Coal . . V 0" 1' 4" 



6. Sandstone B' C/' 



7. Seam, very indistinct 2' Of' 



8. Sandstone, part concealed, 50' at 12° = . . . 10' 5" 



9. Seam {vide assay), 53' at 15° = 13' 8" 



10. Pelspathic grit, 50' at 15°= 12' 10" 



11. Carhonaceous shale, passing into grey sandstones and 



grits, 33' at 10° = 5' 9" 



12. Thin sandstones, with some thin coaly layers, 



200' at 10° 34' 9" 



13. Interval, 100' at 10° = . . . , . . 17' 6" 



14. Grits = 12' 0^ 



Fine-grained yellow sandstones —Talchirs. 



It will be seen, on reference to the table of assays, that seams 



Nos. 3 and 9 contain coal of very good quality. On the other hand, 



a reference to the map will shew that, owing to the fault having brought 



up the gneiss so close to the outcrop, the quantity is very limited 



( 104 ) 



