NKRBUDDA DISTRICT. 



135 



distinctly observable laminated structure : the lines of lamination are some- 

 times marked by variations of color and texture, evidently due to the 

 presence of new ingredients, and the shading off above spoken of is 

 effected by a gradual increase in the frequency of the recurrence of such 

 indications, and by the intermixture of these argillaceous and arenaceous 

 partings becoming a more and more prominent ingredient in the mass, 

 until from being impurities in a calcareous schist, they come to con- 

 stitute the rock an argillaceous, or siliceous schist, with layers, bands? 

 and veins of carbonate of lime scattered through it. 



Fig. 2. View of the " Marble Rocks" near Jubbulpur, looking up the River, showing 

 the deep gorge of the channel near Bhera ghat. 



B Jml 1 m 



HI 





"' ' i mm IIP 1 ',", III 



. I til " 





The places where these calcareous schists occur are indicated on our 

 map by irregular lines of blue color drawn along the strike of the 

 country. 



