APPENDICES. 147 



The boundary rocks along the north-east and south-east margins 

 are respectively crystalline and Vindhyan strata. To the south-west, 

 both series assist to limit the field, and Lametas or infra-trappeans bound 

 it to the north-west. 



In addition to surface soils, there are but three geological groups 



_ , . , comprised within the area of the Bandar field, 



Geological groups. A ' 



namely, the Tdlchir group, the Bardkar group, and 

 the Kdmilii group. As neither the Talchirs nor the Kamthis possess 

 any economic interest, and as their lithological and penological charac- 

 ters are exactly in accord with the description already given in the body 

 of the memoir, to note their occurrence will, I think, be sufficient men- 

 tion of them. 



Bardkar group {coal measures). — There are two outcrops of this 

 group, one extending from Bandar to Bhansuli and onward, the other 

 commencing a little south of the Gansi stream and stretching northward 

 to about the latitude of Morepar. These indicate the south-west and 



east limits of the coal-bearing area. To the north 

 ln?ra-toappea n Troup! lder the Kamthis overlie the Barakars, and pass, as the 



latter presumably do also, under the Infra-trappeans. 



The dip of the Barakars is towards a medial line of depression, which, 

 starting from a point a little east of Bandar, passes between Morepar and 

 Salori. The angle of inclination is not high, and coal would probably be 

 struck in any part of the coal-bearing portion of the field at a depth of 

 something under 900 feet. 



There are no surface indications of coal, but the bore-holes put 



down under the superintendence of Mr. Ness proved 

 Maximum thickness of . , . . 



coal 38 feet. a maximum thickness of 38 feet, including partings. 



Instead of being massed in one seam, as is the case in the Ward ha 

 valley field, the coal here occurs in two, and sometimes three beds. 

 They are of fair workable thicknesses, and therefore no loss of coal is 



( 147 ) 



