Geology oj Warrandyte Goldjield. 531 



In 1856 Sehvvn (1, p. 11), referring to his section across 

 country, part of which is included in this paper, stated on 

 purely stratigraphical grounds that the lowest portion was ex- 

 posed in an anticlinal axis west of the Diamond Creek (i.e., 

 the Templestowe Anticline), and the highest beds occurred 

 immediately east of the River Yarra and west of the River 

 rienty. 



On the field evidence, without determination of the fossils, i 

 should place the Warrandyte grits and conglomerates as the 

 oldest, and, igoing westerly, gradually rising until the youngest 

 would be along the axis of the BuUeen Syncline, although there 

 is no evidence yet to state that these are Yeringian. Tlie beds 

 of the Templestowe Anticline would be between these two, and 

 therefore of about the same age as the middle beds of the wes- 

 tern limb of the Warrandyte Anticline. Mr. Chapman records 

 (17, p. 66) CJionetes inelhournensis Cliapm., from near Temple- 

 stowe, and he informs me that this fossil has not been found out- 

 side the Mell>ouniian series. If the Templestowe beds are Mel- 

 bournian, the Warrandyte beds may be still older, or perhaps 

 some faulting has occurred at Templestowe which has not been 

 detected. 



South-east from Warrandyte, the beds should become 

 A^ounger, until the youngest of the area would occur a little 

 to the north of Croydon. 



As there is apparently no pitch along the W^arrandyte Anti- 

 cline between W^arrandyte and Timstall, the beds at the latter 

 place, unless there be some undiscovered dip faults, should be 

 about the same age as those at the former locality. 



The strong pitch northerly of the same great anticline should 

 bring beds younger than those at Warrandyte to the surface 

 at Watson's Creek in the north-east corner of Nillumbik 

 Parish. The thickness of the rocks disclosed by the pitch along 

 the axial line has not been estimated, so that their approximate 

 position in relation to the other beds cannot be stated. 



The fossils will of course ultimately have to definitely settle 

 these questions, in conjunction with the field evidence. 



Concerning thickness, Selwyn (1, ]>. 11) states that the 

 greatest ascertained thickness of the beds along his line of sec- 

 tion is 10,900 feet. According to the writer's calculations. 



20a 



