36 



RANIGANJ COAL FIELD. 



[Chap. III. 



North of Samdi some good sections are seen, showing, however, only 

 the lower portion of the Talchir group. In a small stream near 

 Paharpur the following section occurs : — 



Fig. 3. Diagram Section of Rocks near Paharpur. 



(Descending.) 



A. Damiida Group. 



"White felspathic sandstone, with numerous pebbles. 



Talchir Group. 



1. Rather coarse shales and shaley sandstones, with hard, yellowish- 

 brown calcareous bands. 



2. Finer slate-colored and dark olive-green shales, breaking into 

 nodular fragments. 



3. Fine mudstones, dark olive in color, with a few hard calcareous 

 masses. These beds split up into extremely fine and thin angular 

 splinters, which in places cover the surface of the earth. They are 

 also very much jointed. 



4. " Boulder bed," masses of gneiss, of diameters from 1 foot down- 

 wards, and numerous small pebbles in a fine calcareous sandstone. 

 This is only a few feet thick. 



Gneiss. 



The thickness of the above is only 320 feet, being 500 feet less than 

 the section near Mira, North of Taldanga. 



The Talchir rocks are cut out by faults in places between Jamiari 

 and the Barakar, East of Jamiari ; they continue steadily to Bhadang 

 and Kenjia, where the boundary is thrown to the Northward for seve- 

 ral miles by the Alipur faults. Thence to the East the North boun- 

 dary is formed by a fault, which cuts out the Talchir beds North of 



