MEMOIRS 



GEOLOGICAL SURVEY OF INDIA. 



The BoKAKo CoAL-PiELD, hj T. W. H. Hughes, Associate, Royal School 

 of Mines j f. g. s., Geol. Survey of India. 



CONTENTS. 



I. — General Topography. 



II. — Talclur Series. 



III. — Damuda Series. 



§ 1. — Barakar Group. 



§ 2. — Ironstone shale Group. 



§ 3. — Eaniganj Group. 



IV. — Panchet Series. 



§ 1. — Lower Panchets. 

 § 2. — Upper Panchets. 



V. — Economic Summary. 



I. General Topography. 

 The River Bokaro, wliose valley extends alocg- the foot of the south- 

 ern scarp of the Hazareebagh plateau, gives its name to this coal-field. 

 Mr. Williams, the first who ever geologically examined this portion of 

 the basin of the upper Damoodah, conferred the title, for the reason 

 that the River Bokaro flows for a distance of 27 miles through the 

 field, and is the stream of greatest importance draining the area to 

 which this report refers. Perhaps it would have been better, however, 

 if he had chosen the name of the lofty hill of Loogoo to indicate the field. 

 Standing, as the hill does, in the middle of a plain, and rearing its 

 summit far above any other eminence in the 



Loogoo hill. .1111-,'ii 



neighbourhood, it is the most prominent natural 

 object which meets the eye for miles around, and could never fail to 

 attract attention to itself. 

 Mem. Geol. Sui-vey of India, Vol. VI., Art. 3. 



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