Green Hill (Melton)

This information has been obtained from the report: Eruption Points of the Newer Volcanic Province of Victoria by Neville Rosengren. This report was published in 1994 and was prepared for the National Trust of Australia (Victoria) and the Geological Society of Australia (Victorian Division). The review of eruption points was based on an earlier unpublished manuscript Catalogue of the post-Miocene volcanoes of Victoria compiled by O P Singleton and E B Joyce (Geology Department, University of Melbourne 1970).

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 value. Reference should be made to the most recent reports. See the Earth Science Heritage (external link) section of the Geological Society of Australia website for details of geological heritage reports, and a bibliography.

	Mt Mary
	37 48 00S 144 32 30E (external link); 7822-3-4 (Eyensbury) 829134.9 km S of Melton.
	Werribee.
Private land:	Grazing, outcrop.
Type 5:	Scoria cone with crater.
	Green Hill is a breached scoria cone with a remnant shallow crater. Lava flows extend to the north and south while the northern and western slopes are littered with blocks of scoria and broken basalt. Some lava and scoria blocks contain fragments of clays containing casts of marine fossils. These have been derived from Tertiary sediments and carried upward by explosive eruptions as inclusions in lava bombs.
	150 m; 45 m
Regional:	This is a major topographic feature of the Werribee Plains and an unusual example of fossil material included in volcanic rocks. It illustrates the nature of part of the sub-basaltic geology that is otherwise completely buried by lavas.
	Although a large feature, its proximity to Melbourne renders it liable to small farm or residential subdivision that would cover and disguise significant volcanic features.
References:	Kitson, A.E. 1902a. Observations on the geology of Mount Mary and the lower Werribee Valley. Proceedings of the Royal Society of Victoria 14. Pp. 153-165. Condon, M.A. 1951. The geology of the lower Werribee River, Victoria. Proceedings of the Royal Society of Victoria 63, pp. 1-24. Ollier, C.D. & Joyce, E.B. 1964. Volcanic physiography of the Western Plains of Victoria. Proceedings of the Royal Society of Victoria 77, pp. 357-376.

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