590 Journal of Agriculture, Victoria. [loOcx., 1912. 



II. 



VICTORIAN LIMESTONE DEPOSITS. 



The information contamed in this report was compiled from depart- 

 mental records and Victorian scientific journals, the authorities being— - 

 I-.. J. Dunn, F.G.S., Director of Geologv ; R. A. F. Murrav. F.G.S. ; 

 J. Stirling. F.G.S. ; F. Chapman, A.L.S. ; A. W. Howitt, F.G.S. ; 

 D. Mahonv. l''.G.S. ; and Messrs. S. B. Hunter, W. Baragwanath, and 

 W. H. Ferguson. The analvses were made by J. Cosmo Newbery, B.Sc.^ 

 and the Geological Sur\ev laboratory officers. 



A. W. HowiTT. 



30.7. 19 1 2. 

 Locality map attached. — A.W.H., 30.7.12. 



(i) Curdie's River. Timeoon. 

 Locality. — On Curdie's River, where the railway crosses it. parish of 

 Timboon, in the county of Heytesbury. 



Occurrence. — Tertiary calcareous ::trata carrying bands of limestone of 

 varying quality. 



Ecoiio)iiic.— Large deposits occur in this locality, and have been 

 specially examined at Tallent's Hill, on the railway line. Fuel is abun- 

 dant, and the forest should be conserved, so as tO' provide a constant and 

 cheap fuel. 



Analyses. — Nos. 172 and 173, from Tallent's Hill- — 



No. 17 5 (North face) No. 173 (Ea.st face). 



Ca CO., ^ 92.61% 88.39 



Insol. vSilica 3-54% A-2>o 



Magnesia Trace. Trace. 



The analyses show that the limestone ranges from good to fairly good 

 quality, and for agricultural purposes the deposit is most valuable. 



(2) Kam'arren, near Colac. 

 Locality. — These deposits are 2g chains west of Kawarren railway 

 station, and 13 miles south of Colac. 



Occurrence. — Tertiary deposits of sands and clavs, &c.. amongst which 

 the lime.stone occurrence seems to be abnormal and different from the sur- 

 rounding rocks. The deposit is composed of organic remains, corals, 

 shells, &c. 



Economic. — The limestone presents an abrupt face of eight} feet 

 (80 feet) thick, and the quarry is eighty feet (80 feet) wide. 



Fuel is abundant, and the occurrence of this deposit so clo.se to the 

 railway renders it a very valuable one. 

 Analysis. — No. 174 — - 



Ca. Cr 3 ... ... 88.02 



In.sol. Silica ... ... 3-48 



Magnesia ... ... Trace 



The analysis shows the limestone to be of fairly good quality, and 

 quite good enough for agricultural purposes. 



(3) HowE.s' Creek, near Manspield. 

 Locdlitv. ~\n allotments 94, 131. 132, and 133, parish of Loyola, 

 and 6 miles from the Mansfield railway station. The quarry is known 

 as Griffith's. 



