Tto a white, crystalline, marble-like stone, with free develop- 

 ments of quartz and calcite. In places the stone is coloured 

 brown, or becomes metasomatic by the presence of iron. 



The hill on the eastern side of the Sixth Creek consists of 

 the overlying phyllites, but in the succeeding valley of the 

 Little Creek (a tributary of the Sixth Creek), at about three- 

 quarters of a mile distance, the limestone again makes its 

 appearance half a mile below the house of Mr. Brooks. From 

 this point it rises with the ground in a north-easterly direction, 

 through Sec. 5586, crosses the old sheep station (The Springs) 

 road on the ridge (Sec. 336), from which position it passes over 

 into the head of the gully on the opposite side of the road, 

 skirts the ridges, and parses down to Kangaroo Creek, which 

 it crosses (dip east 20° south, at 40°) within a short distance 

 of the latter's confluence with the River Torrens, and after 

 passing up the right bank of the creek strikes the Torrens at 

 Anstey's old copper mine. 



The beds associated with the blue limestone can be well 

 seen throughout the greater part of this line of outcrop. The 

 limestone is underlain by slaty beds that have a variable thick- 

 ness of a few feet up to 50 ft. These slates rest on a strong 

 and, for most of the way, very prominent quartzite, which is 

 well exposed on both sides of Hunter Gully, and passes over 

 "into Cock's gully, and forms the chief feature in the scarp at 

 Monta.cute Mine. Its greatest development is, however, after 

 it rises from Little Creek and passes the Springs Road into the 

 slope towards the River Torrens, where it makes bold mural 

 scarps about 50 ft. in thickness. Below the quartzite is a slaty 

 rock, sometimes flaggy, including quartzites of inferior 

 thickness. Overlying the blue limestone are very thick slates 

 or phyllites, including the additional limestones described 

 below. 



Outcrop (h). Parallel with the last described line of 

 ■outcrop of the blue limestone, about 300 yards higher up the 

 gully (Se<:s. 835 and 5527), is another outcrop of very similar 

 •character and strike. It is seen on the private road just above 

 the house of Mr. Robert Hunter, '2) where it has been quarried 

 "for road metal. The limestone and associated impure beds 

 are about 30 yards in width, with a dip to the south-east 

 which varies from 46° to nearly 90°. The limestone is divided 

 into two by a band of slate (or phyllite), which is of variable 

 thickness, from a few feet up to 30 ft. or 40 ft. The outcrop 



(2) I must express my obligations to Mr. Robert Hunter, whose 

 "intimate knoAvledge of this locality has been of much service to 

 me in following the outcrops, more particularly where they are 

 obsicured by orchards and other cultivated ground. 



