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146. St. Helier - Mesozoic Plant Fossils

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

  • Sites of Geological and Geomorphological Significance in the Westernport Bay Catchment (1984) by Neville Rosengren.
  • 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 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 (external link) for details of geological heritage reports, and a bibliography.


Location:
Grantville - 770495. Road cuttings five kilometres west of Grantville.

Image: Sites of Significance Port Phillip Bay
Mesozoic mudstones with silicified plant stems, St. Helier.

Access:
Saint Helier Road.

Ownership:

Crown Land.

Geology:
The cutting on the southern side of the road is 1.5 metres high and includes a four centimetre ligneous band, a soft sandstone with abundant plant remains and silicified stem fragments.

Significance:
Regional. The section illustrates the extent of terrestrial plant remains that occur in parts of the Mesozoic rocks.

Management:
Class 2. Artificial covering or stabilisation of the slope should not be carried out.
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