42 Proceedings of the Royal Society of Victoria. 



Granitic Rocks. 

 Mr. E. G. Hogg, as already mentioned, has described some of 

 these rocks, and calls the Frankston ones gi'anitites and the 

 Mount Martha ones syenites, hornblende being present. 



/iirassic. 



The presence of Angiopteridium spathulatum and Thinnfeldia 

 odontopteroides at the outcrop on the beach south of Grice's 

 Creek appears to correlate these beds with those of Bellarine, 

 which are exposed less than twenty miles off, across Port Phillip 

 Bay. These are generally referred to Jurassic age. 



The occurrence of faulting to account for the present position 

 of the beds has already been referred to, and no other outcrop of 

 the series is known in the area with which we are dealing. 



Slaty Cotiglomerate and Lig7iitic Series. 



The chai'acter of the conglomerates and sands underlying the 

 basalt has been described in detail by Mr. Kitson, and there is 

 little to add to it. 



The lignitic series, or leaf beds, exposed to the south of the 

 blue, marine, fossil if erous clays of Balcombe's Bay are of a 

 similar character. Fragments of slate and indurated sandstone, 

 quartz, both black and white, and sand of granitic origin are 

 equally in evidence in the two sets of strata, and, as we have 

 shown, the lignitic beds pass beneath the vesicular base of the 

 basalt. For these reasons we regard the lignites a^id conglo- 

 merates as of the same age. The thick sheets of leaves contain 

 many that are clearly dicotyledonous, while small fruits or seeds 

 are not uncommon ; but, so far, nothing has been done with 

 them. It would appear, from the sections displayed in Grice's 

 Creek, that considerable denudation had taken place in these 

 beds before the outpouring of the basalt, for we find them in 

 some places forming a thick deposit of conglomerate and sand. 

 In other places, again, and that in close proximity, they are only 

 a few inches thick, or even may be absent, and in that case we 

 find the basalt reposing directly on the granitic rock. The 

 basalt itself was also much denuded before the subsidence which 

 resulted in the deposition of the marine series upon it. It is, of 



