Site 38 Hayes Hill - Eruption Point

This information has been developed from one or more of these publications:

Sites of Environmental Significance in the Flood Plain of the Upper Yarra Valley Region (1983) by Neville Rosengren, Douglas Frood and Kim Lowe (as part of a study of Sites of Environmental Significance by the University of Melbourne for the then Upper Yarra Valley and Dandenong Ranges Authority).

Geological heritage sites, including sites of geomorphological interest and volcanic heritage sites, are under regular revision by the Geological Society of Australia, especially in the assessment of significance and values.Reference should be made to the most recent reports. See the Earth Science Heritage section of the Geological Society of Australia website for details of geological heritage reports, and a bibliography.

Location:	CLONBINANE 5000/04/.02 E23300 N43100.
	5 km E of Donnybrook.
Access:	Epping Road.
Ownership & Municipality:	Private Land, Shire of Whittlesea.
Site Description:	Hayes Hill is a small scoria dome with a final lava flow towards the south. Near the vent on the northern crest of the hill the lava flows preserve original structures but beyond this they are weathered. There were several eruptive episodes from this volcano and it is likely that the youngest lava flow followed the ancestral Merri and Darebin Creeks to the valley of the Yarra River at Kew causing the temporary damming of that stream. This flow continued down the Yarra alley to the present site of Melbourne.
Significance Rating:	Regional.
	Although not a conspicuous eruption point, this is a significant site as the likely source of lava that determined long-term landform development along the Merri and Darebin Creeks and Yarra River.
Site Sensitivity:	Class 2.
	The current agricultural land use is compatible with maintaining the geological and geomorphological values of the site. The site would be threatened by smaller farm development or subdivision or extensive quarrying.
References:	Hanks, W. 1934. The Tertiary sands and Older Basalt of Coburg, Pascoe Vale and Campbellfield, Victoria. Proc. Roy. Soc. Vict. 46 Part II, 144-150. Croker, P. 1984. The lava flows between Melbourne and Wallan: Their ages and distribution. B.Sc. Hons. Thesis (unpub.) Geol. Dept. University of Melbourne.

Related Links

Hayes Hill Eurption Point from the report Eruption Points of the Newer Volcanics Province Victoria by Neville Rosengren, published in 1994

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