59 



accompanying this paper, becomes first observable, and it is 

 only at intervening places going north to this point that the 

 axis of the syncline is preserved — as only the most depressed 

 parts along the axis of the syncline have escaped denudation. 

 The localities v^here these phenomena are showji most visibly 

 are laid down on the map. 



On the south side, but especially on the northern side of 

 Cockatoo Creek, in Sections 1030 and 3034, a conspicuous 

 section of the synclinal folding is displayed. From the some- 

 what indistinct manner the quartzites are exposed on the 

 south side of the creek, it is difficult to describe their exact 

 relative position. Here the synclinal axis seems to be confined 

 within the quartzites, and so severely have the upper beds of 

 the band been acted upon by pressure w^hilst undergoing the 

 process of folding that a casual observance of the beds in that 

 particular place might readily be set down as a re-deposition 

 of the original material. On the northern side of the creek 

 the section is less obscure, and a pretty correct analysis 

 of the position of the beds has been ascertained. Whilst 

 in company with Professor Tate, on the eastern side of 

 the band, in Section 1030, we found the beds well defined, and 

 dipping 80^ westerly. Very nearly on the same line of strike, 

 and about five chains north from this point, in Section 303-i, 

 we found the dip to be 70° westerly. The strike at both places 

 is 10° west of mag. north. Though no exposure of the 

 quartzites on the w^estern side of the band is here displayed, it 

 is evident from the position the clay-slate assumes a few chains 

 to the west, viz., dipping easterly, that the axis of the syncline, 

 if uot actually occurring within the quartzites, must be in 

 close proximity on the western side of the band. 



As further proof of the uninterrupted occurrence of this 

 synclinal fold extending for miles along the strike of the beds, 

 thfc high westerly inclination of the quartzites is well ex- 

 hibited in two separate quarries in Sections 3035 and 3036. 

 In the southern quarry, in Section 3035, dip 80° w^est, strike 

 mag. north, and the northern quarry, situated on the southern 

 side of Section 3036, dip 75° west, and the strike also mag. 

 nnrth. Here it is also evident the synclinal axis must either 

 be within the quartzite beds or in very close proximity west of 

 them, for, as at Cockatoo Creek, the westerly dipping side of 

 the fold, by artificial means, is also well exposed. The easterly- 

 dipping section, though it cannot be far distant, is obscured by 

 the overlaying detritus. 



From this point quartzite is but faintly seen on the higher 

 ground, and it is not until reaching Section 3064 that it 

 again boldly comes to view. Here a quarry (Springbett's) baa 

 been opened on it on the southern slope of the east and west 



