JHILMILI COAL-FIELD. 



69 



SECTION XIII. THE JHILMILI COAL-FIELD. 



Under the above name, Mr. V. Ball, formerly of our Survey, desig- 

 nated a semi-detached portion of the main area 

 Mr. V. Ball s notes. lying principally within the limit of the Jhilmili 

 State ; and as I am almost entirely indebted to the notes that he has 

 left behind him for the matter here published, I have retained both the 

 title and the limits that he selected. 1 



So far as is at present known, the coal-measures occupy a lenticular- 

 shaped area of about 41 square miles, with its 

 Area 41 square miles. . 



long axis running S. W . — N. E. They are stated 

 to be faulted on the north, and thus brought into contact with an 

 alternate succession of Talchir and metamorphic rocks. To the south 

 they are for the most part but little disturbed. 



The evidence of the main fault is very clear in a small stream near 

 the village of Tarka, the Barakar sandstones hav- 

 ing been lowered along a line of fracture to the 

 level of the more ancient rocks. In the Manikmara stream, the faulted 

 character of the northern boundary is still more clearly exposed. Mr. 

 Ball states : " North of the line of fracture, there are Talchir shales and 

 flags which are horizontal or slightly rolling towards the north. At the 

 fracture the edges of these beds are crushed and dragged down, and the 

 Barakar sandstones close by are tilted to angles of from 40° to 50° to S. 

 and S. E., their edges being in direct apposition to those of the Talchirs. 

 Associated with these sandstones, there are two small and much-crushed 

 seams of coal, measuring respectively 1' and 2' 0". A more beautiful 

 and clearly-exposed example of the mechanical effects resulting from a 

 fault is not often met with/' 



Of seams of coal, there are none exposed in the River Rer, on the 

 left bank of which the town of Jhilmili is built, and there are no 



outcrops in the Pasla stream. In the Manikmara, 

 Manikmara stream. ... 



however, in addition to the two crushed seams 



1 The eastern extremity of this field is shown in Mr. Ball's map of the Bisrampur coal- 

 field, Records, Vol. VI., part 2, 1873. 



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