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Me1 Toolern Creek, Melton - Sediment Deposits

This information has been developed from the publications:

  • Sites of Geological and Geomorphological Significance in the Western Region of Melbourne (1986) by Neville Rosengren
  • Sites of Geological and Geomorphological Significance on the Coast of Port Phillip Bay (1988) by Neville Rosengren.
  • Sites of Geological and Geomorphological Significance in the Shire of Otway (1984) by Neville Rosengren.
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 (external link) for details of geological heritage reports, and a bibliography.

LocationMelton - 892295. Shire of Melton. Valley of Toolern Creek at ‘Ridham Park’ 4 km northeast of Melton.

Me1 - Bedded sands and gravels of the Toolern Creek north of Melton.

Access
Ryans Road or Gisborne to Melton Road.

Ownership		Crown land and private land.

Site Description
The creek channel exposes a 6 m section of alluvial deposits. The deposits included well-rounded and bedded gravels with clast 4 to 6 cm long, cross-bedded sands, and silty horizons. The sediment is of mixed origin and includes basalt pebbles from the Newer Volcanics as well as sandstones and quartzites from the Palaeozoic rocks. Concentrations of charcoal occur in some horizons and there is at least one palaeosol (buried soil) 1 m below the top of the section.

Significance
Regional. The site is an excellent example of rapidly deposited valley fill that has subsequently been dissected. It is a very useful teaching site to illustrate the stages of the sedimentary history of a tributary of the Werribee River system, and to demonstrate the substantial amount of material that has been eroded from the Gisborne highlands.

Management
Class 1. The section should not be reclaimed, quarried or stabilized. Roadworks or bridge replacement should be designed to retain an off-road parking area and retain the steep and clean section at the site.

References
Condon, M.A. (1951). The Geology of the Lower Werribee River, Victoria. Proc. R. Soc. Vict. 63:1-24.
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