CHAP. 4.] KADAPAH FORMATION.—NULLAMULLAY BEDS. 217 
In the northern, or Nullamullay, extension the series is made up of 
thick- 8 its, wi asione 
The Nullassullay feld. ick-bedded coarse grits, with occasional pebble 
beds; while they are often very ferruginous* 
towards the bottom. They are exceedingly coarse white grits, weather- 
ing of a dark brown and not unlike some varieties of gneiss.t The 
higher beds as they appear on the more elevated ridges of the western side 
of the Nullamullays are often very compact fine-grained sandstone. 
The different passes across the Nullamullays give very good views of these 
beds, more particularly on either side of the range where they are seen 
to roll down under the slates of the central part. Occasionally there is 
j a roll up again, and then the beds are seen in some of the higher 
ridges,—features which may be seen in many of the appended sections. 
2300f* E. 
Fig 32 B. 
Fig. 34A. Nearly along the Cotta Cunnama, Nullamullays. 
Fig. 34B. Section aeross the Nullamullays nearly in a line with, and slightly north of, the Nundy- 
eunnama Pass. ; 
Q1, Nundyeunnama Quartzites: S2, Aukiveed Slates : Q2, Nemillygoondum Quartzites: S3, Cum bum 
Slates: Q3, Byrenconda Quartzites. 
Horl. scale, 4 miles to the inch. Vertical, diagrammatic. 
The Yellaconda range is for its northern part, or from the 
watershed between the Goondlacumma and Sugele-air basins, mainly 
* [tis from these beds that most of the iron-ore smelted along the eastern side of the 
Khoond-air valley is obtained. 
+ This gneissoid appearance of the grits led me for some time to think that here 
might be the fundamental rocks of the KADAPAHS, and a form of passage into the older 
CRYSTALLINES. However, it soon turned out that there were plenty of quartzites and 
slates beneath.—W. K. 
2 ۳ 
سس 
