12 



Near the dividing fence, between Sees. 330 and 832, the 

 limestones are faulted against the slates, the latter forming- 

 the outcrops until, near the head of the gully, the limestones 

 once more make their appearance. They form two parallel 

 outcrops, one seen in the orchards at the head of the gully, 

 and the other a short distance to the east, where it outcrops 

 on a private road and along the spur on that side of tfte valley. 

 These are but two small isolated fragments, for they are once 

 more cut off by the slates and quartzites which form the ridge 

 n^ar the top of the Montacute 'Corkscrew." 



If we retrace our steps to the Sixth Creek, we find that 

 between Mr. Walter Smith's water-mill and the River Torrens 

 another much-faulted area occurs. A group of dismembered 

 fragments of the blue limestone are found on both sides of the- 

 creek, which, notwithstanding their irregular distribution, 

 may be regarded as being roughly parallel with the outcrops 

 just described as following the Sixth Creek and Pinkerton 

 valleys. On the west side of the Sixth Creek, a little lower 

 than the water-mill, a strike-fault repeats the beds, and the 

 blue limestone once more rises from the water-level and strikes 

 up the side of the hill for a short distance, when it is cut off 

 by another fault, almost vertical on the rise, which can be 

 easily followed by the eye on account of its ''magpie" features 

 — white quartz and slate-breccia sharply defining the fault- 

 plane. The limestone is thrown up at a sharp angle in 

 sympathy with the high angle of dip in the faulted block, 

 and becomes attenuated along the fault-plane as it passes up- 

 to the top of the ridge, where it can be seen in Sec. 332, in a 

 line with the old north-west fence. A small fragment that 

 outcrops in the same section, near the bottom of Pinkerton 

 Gully, appears to be on the same strike, and has been cut by 

 the same strike-fault. 



Returning once more to the Sixth Creek, we examine 

 the steep ridge that occupies the fork between the junction 

 of the Sixth Creek and the River Torrens. On the creek 

 road, near the water-mill, we find an outcrop of the same 

 limestone, which rises to the hill on the east side of the valley, 

 and crosses the ridge at the saddle, passing over to the other 

 side in Mr. Hersey's grounds, and just enters Mr. F. 

 Batchelor's property on the west s-ide of Sec. 335, where it is 

 faulted. It can be picked up again, at a little lower level, 

 on the side of the hill, but continues only for a short distance, 

 when it is again faulted in two segments, following each other 

 in steps, and is then cut off by slates near the top of the ridge. 

 At the summit a prominent quartzite is developed, which 

 passes down the ridge in the direction of Montacute Mine,. 



