Rocks near Heathcote. 305 



3. Dun?i, E. J. " Notes on the Geological Features of Heath- 

 cote and Neighbouring Parishes." Quarterly Rep. Min. Dep. 

 Victoria, Dec. 31st, 1888, pp. 76-77. In this paper Mr. Dunn 

 briefly described the rock series. The granitic-like rocks he re- 

 garded as syenite ..." schistose beds, in part serpen- 

 tinous, are exposed in the railway cutting south of the town. 

 Decomposed intrusive rock is abundantly represented in them. 

 . . . A boss of intrusive rock (greenstone) occurs on the 

 south side of the creek, and about a mile west of the post office." 

 Mr. Dunn stated that carbonate of magnesia is abundant in 

 botryoidal masses in the older Silurian (Ordovician) rocks. A 

 reef worked 1 mile S. 20 deg. W. of Tooboorac, according to Mr. 

 Dunn, is in highly altered Silurian (Ordovician) rocks (micaceous 

 sandstones). 



4. In a letter sent to the Mines Department on July 6th, 1891, 

 but only recently published (Records Geol. Suit. Victoria, Vol. 

 II., Part I., 1907), Mr. Dunn asserted the pre-Siluriaa (pre- 

 Ordovician) age of some of the Heathcote rocks. He says : " The 

 formation is of pre^Silurian age, and the beds of which it con- 

 sists comprise highly silicious and jaspideous rocks, very talcose 

 splintery schists, tufaceous deposits, quartzite and ancient vesi- 

 cular basalts, onoe surface flows but now intercalated with other 

 strata." Mr. Dunn then suggested that thesie rocks have marked 

 resemblances to the rocks of the Te Anau series in New Zealand. 



5. Lidgeij, E. " Not«s on Quarter Sheet, No. 80, N.W. — 

 Parishes of Dargile, Heathoote, Costerfield and Knowsley." Prog. 

 Rep. Geol. Surv. Victoria, No. VIII., 1894, pp. 44-46. Mr. 

 Lidgey described the Metamorphic rocks as consisting of " basic 

 lavas and amygdaloidal rocks, tuffs, agglomerates, varieties of 

 jasper, cherty rocks, and talcose, and chloritic schists."' In the 

 description of the Lower Silurian (Ordovician) rocks he recorded 

 the finding of trilobite fragments in a micaceous mudstone from 

 a paddock marked 3N., T. Blake, in the parish map of Knowsley 

 East. He further noted that some of the Silurian conglomerates 

 contained pebbles of the metamorphic rocks. 



6. Etheridge, R., Junr. " Evidence of the existence of a 

 Cambrian Fauna in Victoria." Proc. Roy. Src. Victoria, new ser.. 

 Vol. VIII., 1896, pp. 52-56, pi. 1. Mr. Etheridge examined 

 the trilobite fi-agments collected fi'om Knowsley East, described 



