66 TALCHEER COAL FIELD. 



distance between these sections being only the breadth of the nullah, 

 or about 30 yards. 



In the West of the field these upper grits invariably rest on the 



Greater denudation in lower measures and generally on the blue shales, 

 while to the East much less denudation seems to 

 have taken place, and these beds are found resting apparently conformably 

 on the upper sandstones and shales of the middle series. This 

 conformability, however, is doubtless only apparent ; and the dip 

 of beds so coarse and universally false-bedded, as the upper grits, is 

 of course almost impossible to ascertain with accuracy. Moreover, 

 according to all appearances, it seems probable that the lower beds, both 

 at the time of their denudation and of the subsequent deposition of the 

 upper beds, retained in a great measure their original horizontality, 

 and over a large portion of the field they still do so ; so that a pseudo- 

 conformability in dip exists between them and the upper beds. 



Although there are no well-marked and constant divisions in the 

 upper series, there appears to be a succession of beds, with slightly 

 different mineral characters, which are more or less persistent. Thus in 

 the lower portion, probably at about 200 to 300 feet from the bottom of 

 the group, there is frequently found a bed of sandstone containing 

 boulders evidently derived from the "tesselated sandstone" of the 

 lower group. 



This bed is frequently seen at considerable distances from any locality, 

 where this tesselated sandstone reaches the surface ; for instance, on the 

 Tengria Nullah, both above and below* Gopalprasad; also in the 

 Patrapara Nullah. 



* It is not quite clear from the section, whether these boulders of tesselated sandstone in 

 the locality below Gopalprasad occur in the lower beds of the upper group, or in the 

 uppermost beds of the middle group ; the point where they occur being just on the East and 

 Westsynclinalaxis, which passes near the village of Bodhur (sec o»«e). The probability is 

 that the beds there belong to the middle series, and if so, this is an additional and interesting 

 proof of unconformability between the middle and lower groups. 



