— and is again faulted by a throw to the north, making 

 in all a very extensive outcrop. The eastern limb then 

 follows the bank down to the River Torrens, where it makes 

 an important scarp. (Dip, 20° south of east, at 40°.) It 

 crosses the river to the right bank and forms a cliff along the 

 straight reach of the river to within a short distance of the 

 outlet of Kangaroo Creek. It is here a dip-slope to the river 

 .at 50 \ 



An isolated fragment of the Lower Torrens-limestone 

 occurs at the first turn of the river (Sec. 333) below the Sixth 

 Creek. The new road has cut into the beds- and exposed them 

 for a distance of 13 chains. The stone is a white, grey, and 

 yellow marble (similar to that at ''Marble Bar"), of cryto- 

 crystalline structure, much stained by ferro-manganese 

 dendrites. In the bed of the river, on the opposite side of the 

 road, a coarse calcareous grit outcrops parallel to the strike, 

 and is probably at the base of the limestone beds. This bed 

 appears to be on the same horizon as the siliceo-calcareous rock 

 noted in the succession at ''Marble Bar," referred to above. 

 The limestone is circumscribed by faults. A fault, which is in 

 a line with the river, brings it into juxtapositon with the over- 

 lying phyllites. A second fault occurs on the opposite side, 

 where it is backed by quartzites and phyllites, and is marked 

 by a grea«t development of metasomatic ironstone. On the 

 western limits the limestone overthrusts a portion of the 

 phyllites, which occupy a higher horizon, and the base of the 

 limestone along the line of junction is sheared, changed to a 

 dark colour, and has been leached of much of its calcareous 

 content. A gradual change of dip also takes place in the 

 direction of the thrusts. At the eastern end the dip of the 

 limestone is 20° west of south, at 45° : but as it approaches the 

 disturbed area the dip gradually increases to 76°, and swings 

 round to the south and some points east of south. The 

 phyllites which are thus overthrusted are greatly bent, con- 

 torted, and crushed. 



Immediately overlying the Lower Torrens-limestone is a 

 thick series of slates that include two zones of quartzite. The 

 upper quartzite is about 12 ft. in thickness and the low^er bed 

 about 15 ft. in thickness. These beds can be well seen behind 

 Mr. Smith's house, and they occupy the high ground included 

 within the important southerly bend of the river at the con- 

 fluence of the Sixth Creek. The lower of these quartzites runs 

 parallel with the Lower Torrens-limestone, and is a good indi- 

 cation for its adjacent presence. It can be traced in this 

 position across the Torrens and through Hersey's and 

 Batchelor's grounds. 



