54 MIDDLEMISS: THE GEOLOGY GF iDAi; STATE. 



series, it is entirely destitute of any plexus of aplite veins. Never- 

 theless, as we plOOeed with the detailed statement of this new 

 series of roek types, we shall find that there are not wanting features 

 connecting certain of them, as regards their mineral composition, 

 with the ealc-gneiss and possibly with the Kherod amphibolite 

 genes— -a point that, if it can be accepted as established, will be of 

 the utmost importance in elucidating the origin of the two latter. 

 In geographical position this series will be Been to constitute 

 one rather conspicuous hill 2 to I) miles north 

 General features and () f M un ,ieti. and a, number of smaller ridges 

 poM on " dotted about in the plain near Dhechania, 



Sisasan, Malasa and Kasangod. with very occasional stream-bed 

 outcrops and exposures in wells making up altogether only a very 

 small, scattered area of more or less disconnected outcrops. As 

 a whole these Mundeti rocks are generally dark, but sometimes 

 pale-coloured, compact and generally only moderately metamor- 

 phosed, calcareous, arenaceous and even slaty rocks, so that their 

 originally sedimentary nature seems beyond question. Chiefly on this 

 account." but also because of their strange position interrupt ing 

 the strike of two neighbouring Delhi Quartzite masses, it was natur- 

 allv\ at first, doubtful whether they were more related to the Delhi 

 Quartzite than to the Aravallis. or whether they even represented 

 some lower series of the former corresponding for instance to the 

 Raialo limestone of N.E. Rajputana. As however, 1 have been 

 unable to establish any relation, other than one of a discordant 

 nature, between them and the Delhi Quartzite, and as they cannot 

 very well be imagined as younger in age, it follows that they must 

 be "considerably older, and so come, at least provisionally, among 

 the Aravallis as at present defined. 



The largest hill-mass of this scries lies between 1 and 3 miles 

 north of Mundeti. presenting a steep, rugged 



Dip and strike -. Ktho- aut j jungle-clad surface, and comprising three 

 logical varieties. ., , •■ ,, , i , -i 



summits marked on the 1 inch =s 1 mile 



maps as 1333, 12G3 and L153, respectively. The greatest width 

 across the strike is one mile. The direction of strike throughout 

 these exposures and also those in the smaller outcrops, remains 

 steadily N.E. by N. and S.W. by S. and the dip S.E.by E. at 

 angles varying from 45° to vertically, but generally being between 

 50° and 30°. The bedding appears distinct and sharp, being accen- 

 tuated by a continuous interbedding of two or three varieties of 



