BY ROBERT C. RINGROSE. 



55 



range going towards Watsonville, west of Grant's Hill, there is 

 no sign of them until the neighbourhood of Federation Hill is 

 reached. 



The altered sandstones of the Federation Hill appear to me 

 to belong to the Sandstone series about to be described. 



Proceeding up Slaughteryard Creek, from the Watsonville 

 road, the rocks, where visible, consist of the normal Herberton 

 porphyries and elvans, until Isabel Creek, one of the heads of 

 Slaughteryard Creek, is reached, where the rock changes as 

 one ascends to an altered sandstone, approaching quartzite in 

 places. Large blocks of this sandstone have filled up the channel 

 of the watercourse and concealed the natural sections. 



Altered sandstones are exposed in another little creek, 

 falling into Slaughteryard Creek, further to the south. These 

 sandstones strike north-north-east and dip to the east-south-east. 



The whole of the range from the head of Slaughteryard 

 Creek and Grant's Creek along Crescent Hill to a lofty hill, 

 roughly computed to be 4150 feet in height above sea level, 

 which Mr. Skertchley has named Mount Ringrose, consists of 

 red and yellow sandstones, which are often micaceous. 



Following the sandstones down in a south-westerly direction 

 from this hill, a fairly level ridge is reached, overlooking Grant's 

 Creek, which consists of a bed of conglomerate. Looked at 

 from below this bed of conglomerate appears to be like the 

 ruined buttresses of some ancient castle, and it forms a striking 

 feature in the landscape. The components of the conglomerate, 

 which are chiefly of quartz, but also of granite and sandstone, 

 vary from the size of a rifle bullet up to that of a large pumpkin, 

 and in most instances present a well-rounded and waterworn 

 appearance. Possibly this bed of conglomerate is identical with 

 that on the top of the lofty crescent-shaped hill on the opposite 

 side of Grant's Creek, and at about the same altitude. From 

 this conglomerate ridge there is a gradual descent down to 

 Grant's Creek, and about half-way down outcrops of elvan, 

 probably intrusive, are met with, and the same rock is seen 

 in the bed at the crossing of the creek. 



On either side of the elvan the sandstones are to be seen 

 standing almost on their edges. On the lower side of the elvan 

 the sandstones, which are dark coloured and hard, apparently 



