214 J. T. Jutson: 



is worthy of note. As regards the cause of the deviation of the 

 anticline itself, it may be that the granitic intrusion of the Mount 

 Disappointment rocks is the determining factor. The average 

 dip of the beds is about 50 deg., so that the anticline forms a 

 broad, fairly gentle fold. This is borne out where the actual 

 axis can be seen, as at Barber's Creek, in Quarter Sheet 2 N.E. 

 and at the Glenburnie road, near the main road from Whittlesea 

 to Wallan. At the latter section the anticline appears to have 

 a slight pitch to the north. I have located only one minor fold 

 in the main anticline. This fold — a syncline — is determined by 

 the sections along the Cemetery Hill road. It does not appear 

 to extend fai' either to the north or to the south. The beds of the 

 anticline exposed on each side of its axis occupy, in a horizontal 

 line, about 2 miles. The rocks are, as will be subsequently shown, 

 of Melbournian age. Fioiu the structural and palajontological 

 importance of this fold, I propose, (following Prof. Gregory's 

 nomenclature)! to disitinguish it as the "Whittlesea Anticlinal." 

 The other main structural feature is the syncline observed 

 near the junction of the Cemeterj- Hill and the Merriang roads. 

 Its axial line crosses the former road about 100 yards to the east 

 of the junction of the roads just mentioned^, but such line has so 

 far been definitely traced a very short distance. Tlie syncline, 

 however, is no minor fold, as the low angles maintained for 

 about a mile on each side of the axial line demonstrate. The 

 fold must therefore have been a broad, far-reaching one, but its 

 septa have been removed by denudation. The strike on the 

 eastern side of the axis averages about N. 40 deg. E., with a 

 corresponding north-westerly dip at an angle of about 10 deg. 

 The strike of the western side is about N. 50 deg. W. on the 

 average, with a corresponding north-easterly dip at about the 

 same angle as the other side. We have thus a " nosing in " to 

 the south, with an increasing divergence of strike to the north. 

 This '■ nosing in " gives rise to a series of V-shaped outcrops in 

 ground plan. Whether this structure continues for any consider- 

 able distance, either to the north or to the south, it is at present 

 impossible to say, on account of the paucity of dips in the former 



1 The Heathcotian. Proc. Roy. Soc. Vict., vol. xv. (ii.s. ), pt. ii. (1902), p. 171. 



2 Some app.ireiit dips at the very small sections marked ix. on the map, would if 

 correct, throw the axial line a little further to the east ; but in view of the clearness of the 

 road sections, these may he disregarded. 



