48 KING: KADAPAH AND KARNÜL FORMATIONS. [PART II. 
but, on the other hand, show well round towards P. Duggada, and 
form an extensive rising ground on the northern shore of the Goodium 
tank. Here the rocks are dark brown and dirty-colored somewhat 
ferruginous quartzites (grits and sands), with a very compact well- 
vitrified dark-green conglomerate of pebbles of chert and jasper. The 
-Goodium quartzites form in fact a lenticular patch, which was probably an 
extensive sand bank, on what, as will be seen hereafter, was the northern 
shore of the Khoond-air basin. These quartzites thin out on either 
side of the Toongabudra-Kistnah valley, and often quite disappear to 
the southwards, more particularly along the banks of the first river. 
They show in thin compact very hard vitrified sandstone and slightly 
pebbly beds by another low waving scarp, on the opposite side of 
the Kistnah from P. Murroor, down to and under the large village of 
Alumpoor, and are associated at the same time. with grey, buff, and 
reddish shales. 
There is also with these, only above the buff shales, a thin bed 
of from nine to eighteen inches thick of lydian stone, or a compact 
black or nearly black silicious rock not unlike lydian stone and having 
a lustre, when weathered, like that of impure obsidian. Some eight 
miles further east, at Nundycotecoor, another, or, as I believe, the same 
thin bed of lydian stone crops out from under the K oilkoontla limestone, 
though contact is not seen, and lies immediately on fine white and pale 
buff shales, which are, however, traceable into the Owk shales of the 
limestone series below. | 
This occurrence of intercalated sandstones and conglomerates among 
shales at the bottom of the Ahoondais in this. part of the field is 
interesting, as indicative of a shoreward character m the group, which is 
quite in accordance with the gently shelving form of country over which 
the strata are deposited. As will be seen further on, the lydian stone 
bed of Nundycotecoor, from the manner in which it occurs there, as 
apparently in extension of a series of quartzites to the south and 
( 48 ) 
