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Mount Kooroocheang

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 The review of eruption points was based on an earlier unpublished manuscript Catalogue of the post-Miocene volcanoes of Victoria compiled by O P Singleton and E B Joyce (Geology Department, University of Melbourne 1970).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

Smeaton Hill
Image: Mt Kooroocheang
Mt Kooroocheang

37 18 00S 143 59 00E (external link); 7623-2-1 (Smeaton) 643678. 14 km NE of Creswick. Werona-Kingstone Road.

Private land. Grazing, bare, communications tower on summit. Small quarry on lower southeastern slope. Outcrop on slopes and in gullies.

Creswick.

Type 9:
Composite scoria cone overlying lava flows.

This is a large composite volcano of scoria and lava with over 200 m of local relief. The summit of dome-shaped without a major crater. It is reported that a small open spatter vent 8 m deep with a 1 m wide entrance occurs at the summit. There are two prominent parasitic vents - the larger at the southwestern base of the mountain and a smaller one on the northeastern flank. Lava interbedded with the scoria outcrops on the western slopes and there are extensive lava flows to the north. Blocks of Ordovician country rock occur in the ejecta. Perfect augite crystals up to 1 cm in length have been collected from the volcanic ash of this volcano. The slopes of this mountain have an established radial gully network. Deeper and broader gullies may have been initiated by avalanching on Oversteepened scoria slopes during eruptions. One small scoria pit on the lower southeastern slope operates intermittently with small production.
676 m; 230 m.

State:
This is one of the largest eruption points in the Central Highlands of Victoria. It is an excellent example of a complex eruption point with lava flows and scoria and a very clear example of a parasitic cone. The open spatter vent is a rare feature of eruption points in Victoria. It is a major site for collection of large, high temperature megacrysts of augite. This site is one of the most eroded of the scoria cones of the Newer Volcanics Province and shows the classical mode of early radial dissection predicted for such cones. The site has considerable potential for field teaching in geology.
Image: Mt Kooroocheang Eroded Slopes
Mt Kooroocheang eroded slopes
Image: Mt Kooroocheang and Parasitic Lava parasitic plastic lava cones
Mt Kooroocheang and Parasitic Lava parasitic plastic lava cones
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