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Hardie Hill

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 The review of eruption points was based on an earlier unpublished manuscript Catalogue of the post-Miocene volcanoes of Victoria compiled by O P Singleton and E B Joyce (Geology Department, University of Melbourne 1970).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.

Location:37 45 00S 143 52 60E (external link); 7622-2-1 (Grenville) 541179. 11 km S of Buninyong.
Image: Eruption Point, Hardie Hill
Hardie Hill.


Buninyong.

Land Tenure/Use:
Private land. Grazing, cleared scattered trees, partly drained swamp.

Type 7:
Tuff ring and maar crater.

Hardie Hill is a high point on the southern rim of a tuff ring surrounding a broad shallow maar crater. The crater measures 2.4 km x 1.6 km and opens towards the north-east with a small creek draining to the Yarrowee River. The crater floor is uneven with only a small area of swamp (now drained). There are small, shallow landslips on part of the northern wall of the crater. There are no clear exposures of material either in road cutting or natural sections.

440+ m; 60 m.

Regional:
Although an indistinct example of a maar, this site is in an area well north of the main development of this eruption type. There is a substantial accumulation of tuff which has built a ridge much higher than most of the southern maars.

References:
Yates, H. 1954. The basalts and granitic rocks of the Ballarat District. Proceedings of the Royal Society of Victoria 66, pp. 63-101.
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