MYSORE PROVINCE, SOUTHERN TNDJA. (J3ll 



rocks. A band of mica-schists again appears, which gives place to 

 a fine-grained gneiss-rock dipping nearly vertically. Mica-schist 

 dipping to the west is followed by a hard hornblende-schist, which 

 dips to the east, and then fine-grained gneiss accompanied by a broad 

 band of mica-schist comes in, giving place to hornblende-schist, 

 followed by a mixture of narrow bands of mica- and hornblende- 

 schists, quartzites, quartz-veins, a band of eclogitc, and some talc- 

 and chloritic schists. The schists are now replaced by schistose 

 gneiss and gneiss similar in some respects to those found at the 

 commencement of the section. The only difference is in the gneiss 

 being much more finely-grained and more regular in its foliation 

 at the east end of the section than at the west. 



Having briefly named the different rocks met with in the Melkote 

 Area, I will describe in some detail a few of the important ones, 

 referring for the full microscopical descri[)tion to the Appendix by 

 Prof. Bonney (p. 651). 



On the north bank of the Lokapavani River (see Plan, fig. 2) there 

 is a band, some thirty feet in thickness, of a hard, compact, greyish 

 rock, containing numerous reddish-coloured garnets, and with a com- 

 pact base showing green hornblende. The rock is most difficult to 

 break with the hammer, and the only garnets obtained in a fair state 

 of preservation were those found close to the hornblende-schist 

 which adjoined it. The rock may be called eclogite (Eock-section 

 no. 1, p. 651), and it was found to have a specific gravity of 3'22 

 and by chemical analysis to contain 59*14 per cent, of silica. 



The qualitative analysis showed it to contain only a small quan- 

 tity of iron as well as of alumina. 



The area occupied by the eclogite is limited, so far as the author's 

 observations went, as it could not be found south of the river, and 

 only about one third of a mile to the north of it. Hornblende- 

 schists occur in both wide and narrow bands, and they were examined 

 with considerable care as well as interest on account of the name 



Pig. 4. — Tojj view of Qaartzite, filioioing Slickensides. 



of trap being locally applied to the rocks. The hornblende- schist 

 a.J.G. S. No. 175. 2u 



