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G21 - Flood Chute - Igneous Outcrop

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 (external link) section of the Geological Society of Australia website for details of geological heritage reports, and a bibliography.


Location:AMG Ref: 638293.

Access:
Maddens Lane.

Geology/Geomorphology:
Two small meander loops are crossed by flood chutes which will probably enlarge to form cut-offs. Upstream the channel follows the bluff marking the southern edge of the floodplain and erosion has exposed a Devonian intrusive rock interpreted as a quartz porphyry dyke by Garratt (1973). This intrusion is part of a faulted ring dyke complex. The course of the Yarra River from this point downstream to Tarrawarra follows an alignment determined by the trend of this fault.

Significance:
Local. Flood chutes are not common on the Yarra Valley meanders. The site includes one of the few outcrops of the ring dyke material.

Management:
Class 1. No diversion or alteration to the flood chute should be permitted.


G21 Flood Chute
Flood Chute
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