238 



Stoi/t/ fell. —This outcrop occurs about two miles north- 

 east of the preceding one. A private road passes beiiind the 

 wine cellars at Stonyfell, leading to several quarries in the 

 'blue metal" limestone, situated on the ridge about a third 

 of a mile to the west of the Stonyfell (Dunstan's) quartzite 

 quarries. The "metal" is about 10 feet thick, but is some- 

 what uncertain in its quality. In some of the workings the 

 associated calcareous slates afford beautiful examj^les of bed- 

 ding crossed by cleavage planes that can be obtained in good 

 hand specimens. The beds having suffered a dov»^nthrow to 

 the west (as shown in Dunstan's quarries), are broken and un- 

 certain as to dip. In one of the "blue metal" quarries a 

 small fault with contrasted dip is seen : the one easterly at 

 20', the other 20 south of west, at 20 \ The general strike, 

 however, is a little east of north, which carries the beds across 

 the valley on the north side, where they have also been quar- 

 ried. 



Further outcrops of these beds can be traced in the olive 

 plantation, about three-quarters of a mile to the north of 

 Stonyfell, where they have been quarried at many places along 

 the strike. The thickness of cover in most of the "blue 

 metal" outcrops has led to a system of under-mining, by 

 which large caves have been excavated and carried back on 

 the line of stone as far as it was safe to do so. In this 

 method, successive quarries are worked along the line of out- 

 crop, as has been the case in those now described, as well 

 as in most of the other outcrops of the ''blue metal." The out- 

 crops in this instance follow the south side of a dry gully 

 through the olive plantations, and pass out of these grounds 

 on the eastward (Sections 108 and 918, Hundred of Adelaide) 

 to the head of the gnlly, where a quarry exposes very char- 

 acteristic phyllites, with thin beds of the ''blue metal." 

 Here the beds roll in a shallow syncline with low dip to the 

 south, and appear to run out to the east. A great thickness 

 of these calcareous bedsi is exposed in the dry gully on the 

 north side of the olive plantation, where the beds have been 

 quarried at the bottom, and also in a small quarry on the 

 north side of the valley. At the latter position the limestone 

 beds are seen to be nearly horizontal and faulted against the 

 slates, which are thrown down at a high angle. Much tra- 

 vertine appears on the surface from this point, northwards, 

 towards Magill, but no "blue metal" beds are exposed, having 

 apparently been cut off by the fault seen in the small quarry 

 just referred to. 



Magill. — About half a mile from the tram terminus at 

 Ma.gill several quarries in the "blue metal" beds can be seen 

 on the north side of the old road to Norton Summit. The 



