DAMUDA SERIES : BARAK AES. 19 



Ft. In. 



71. Argillaceous shale ... ... ,., ,,, ... o 6 



72. Sandstone (containing pebbles) about ... ... ... 6 



73. Thin-bedded sandstones and concretionary argillaceous shales (about) 4 



74. Coaly shale ... ... ... ... ,., o 9 



75. Sandstone (mostly shghtly calcareous micaeeo-ferruginous about) ... 12 O 



76. Inferior seam of coaly shale ... ... .. ... j 1 



77. Concretionary carbo-argillaceous shale ... ... ... 5 



Five feet higher in the series, there is another seam about one foot 

 thick, possessing no dip. Faulted against the above measured beds 

 are rocks dipping to the ' N. N. E. at as high an angle as 60°. They 

 belong to the upper portion of the Barakar group, and consist of 

 sandstones and shales. The sandstones have a prevailing yellow tint. 

 The shales are greenish grey argillaceous beds, concretionary as a 

 general rule, but there are others sandy in composition and fine in 

 texture, which usually display a great variety in colours, white-grey, 

 dark-grey, yellow, and occasionally light purple. Flexuring is equally 

 well seen in these beds, as in those near Dhooree and Amlo, and further 

 down the Damoodah dips to the east and south and to intermediate points 

 occur. The map very clearly exhibits all that calls for attention in this 

 part of the field. 



The dyke marked at the mouth of the Foosro Nuddee injures a seam 

 of coal which crops out along the southern bank of the Damoodah, 

 becomes obscured, and then reappears close to the Godo Nullah. The dips 

 of the rocks in the neighbourhood of Foosro and Korgullee are very 

 much less than those to which we have just been referring, from 5° to 10° 

 are the ordinary amounts. 



The boundary of the field is well exposed in this stream. The 



Talchirs at the base are about 20 feet thick, and 

 Korgullee River. 



succeeding them are Damtida grits and conglome- 

 rates. The full effect of a torrent when swollen by the annual rains may 

 be seen and studied here ; masses of rock of every size and shape strew 

 the bed of the river so thickly that it is a matter of considerable bodily toil 

 to clamber over them. 



( 57J 



