239 



main quarry shows a face of '24 feet in all, wit li 12 feet of good 

 "metal." Dip west at 35''. A little higliei- ii]), on f.he same 

 bank, phyllites with a 6-feet bed of qiiartzite are seen in an 

 old quarry. Here the beds show a shar^) monoclinal fold, in 

 which the septum has a dip to the south-west at 75 '^. 



On the new road to Norton Summit, alxnit half a mile 

 above the Magill Reformatory, the "blue metal"' beds are seen 

 in a road-cutting, which is due north-east from the outcrop 

 on the old road. The beds are not so strong a^ usual, but 

 this may be partly due to weathering. Dip, 10^ east of south, 

 at 38'^. The strike from this point (judging by the travertine 

 surface) follows the foot of the low hills bordering on the 

 plains. Similar indications appear at the mouth of the Fourth 

 Creek and on the hill slopes south of the Fifth Creek. The 

 presence of travertine cannot be taken, however, as a sure 

 guide to the presence of a limestone beneath, as there is often 

 sufficient diffused lime in the slates themselves to produce a 

 considerable travertine cap. 



Anstey's Hill and Teatree Gully. — On the main road be- 

 tween Paradise and Houghton (Section 5608_, Hundred of 

 Yatala), where the old and new roads of Anstey's Hill are 

 nearly parallel to each other, black slate with bands of blue- 

 black limestone cross the road, and can be traced along the 

 strike on either side. The outcrop is very similar to the "blue 

 metal" stone met with elsewhere, although the limestone is in 

 jilaces somewhat of a lighter colour than is usual for this bed. 

 The outcrop on the road extends for about a hundred yards, 

 and is followed on its eastward side by a ferruginous rotten 

 sandstone and cherty quartz with phyllites. 



The strike carries the beds, on the south side, across 

 Payne's Gully and the next spur, and was traced in the 

 same direction until not far from the north bank of the River 

 Torrens. The exposures show the beds to be vertical, or in- 

 tensely contorted into acute folds with the dip rapidly chang- 

 ing to opposite directions. 



On the north side of Anstey's Hill road the beds can be 

 followed down the valley and across the Water Gully road, 

 where good sections of strong stone can be seen on the road 

 and in Mr. F. Newman's garden. The beds take the next rise 

 to the north (passing a little east of the old ironstone flux 

 mine. Section 5632), where it is mostly evidenced by the 

 presence of chert or cherty quartz on the top of the hill. 

 From this point the beds descend and cross the Teatree Gullv 

 road, about halfway up the gorge. Here they make two (if 

 not three) distinct outcrops. The stone is very strong, carries 

 much chert, as do also the associated phyllites. and is quar- 



