COUNTRY NORTH OF THE SON AND WEST, ETC. I43 



range between Bela and Saria. This quartzfte which is thick-bedded, 

 compact and hard, and reddish white in color, has hardly any pebbles 

 in its upper part, but becomes conglomeratic in the lower parts, 

 the pebbles here being of white and reddish quartz, reddish quartzite 

 and red jasper, and constitutes the lowermost beds of the Vindhyan 

 basin here. 



II.— PORCELLAN1C STAGE. 



Above the basal stage come in the Porcel- 



Porcellanic stage. , . . , 



Ianic shales. 

 Beginning at a point on the Son about 6 miles south by south- 

 „, , , D east of Ramnagar, the Porcellanics run on 



Traced from near Ram- ^ & » 



na s ar - north-westwards as a fairly thick band. By 



Marjatpur the outcrop is thicker, but bevond this point it contracts 

 again and the beds assume a more easterly strike and are well 

 traceable, forming as they do the hilly ground by Amlai and Garhara 

 eastwards. In the neighbourhood of Baghar and Dembha, however, 

 there is a good deal of alluvium concealing the beds. Just east of 

 Dembha occurs the Son crossing the Porcellanics at right angles to 

 their strike. 



A little to the south of Deora, on the Nagour, in the western 

 parts of this area, the Porcellanics are well 



Well exposed near Deora. - , . - 



exposed. Along with the typical rock, — i.e.* 



the porcellanic shale which is characteristically greyish white and is 



Nature of the beds com- often composed of laminae of various colours, 

 posing the stage. stfch as grey> yel]owIshj white an d blackish, and 



is generally thin-bedded, — occur, interbedded, making up not an 

 inconsiderable portion of the entire bulk, ordinary argillaceous shales 

 and sandstones of a pale greenish hue. Intercalated with the 

 above also occur beds of a homogeneous clayey rock and a rock of 

 a dark to bluish grey color, much resembling a limestone, but 

 non-calcareous. Along with these beds we also find a rock which is 

 more compact, harder, coarser, thicker-bedded and more distinctly 



( 143 ) 



