THE TALCHfR SERIES. 11 



Talchirs were deposited against and over the quartz-reef, and the frag-- 

 ments of qnartz in the sandstone were debris enclosed during the 

 formation of that rock. 



Boulders and pebbles washed out of the bottom conglomerate are 

 found all over the gneiss intervening between the Karanpura and 

 Bokaro fields: thus recording the intimate relation that exists between 

 the two areas and pointing out the probable former continuity of 

 the two areas. 



The exposure of the series in the main body of the field is very 

 small, a narrow strip occurs along the eastern boundary, slightly faulted 

 on the north. Occasional outcrops are met with along the northern and 

 southern boundary, but none on the western. 



Everywhere the Talchirs are in natural contact with the gneiss 

 except south of Eikba, where a fault which cuts off the other series of 

 rocks affects them likewise. 



This fault is one about which there can be little doubt, as there 



is mechanical evidence in the form of a " slikenside" 

 Fault. 



to support the first impression of the existence 

 of a throw which would naturally be drawn from the disturbed lie of 

 the beds, and the consecutive appearance of the different series at the 

 boundary. 



The best spot for studying the mechanical evidence is about two 

 miles west of Chano in the stream which flows from Passaria, and past 

 Jarjarra in the south Karanpura field. The contact rocks show signs 

 of scoring, and in places present a glazed appearance. None of the sec- 

 tions of the Talchirs expose more than 400 feet of strata. The most 

 typical of all is the one in the Kassiatic river which flows south of 

 Misrole in the north-west part of the field.' The boulder bed, shales, 

 and the sandstones are characteristically developed. 



A look at the map will show that the areas of the other outcrops 

 of Talchirs are very small, and as there is really nothing to say about 



( 395 ) 



