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155. Almurta East - Former Lake Sediments

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 - 765428. Valley of Tennent Creek three kilometres south-east of Almurta.

Access:

Glen Alvie Road.

Ownership:

Crown Land (Water Production Reserve) and private land.

Geomorphology:

A broad area of alluvium lies upstream of a constriction in the valley Tennant Creek. Below the constriction the valley is narrow and the gradient is steep. Jenkin (1962) explained the development of alluvium as a result of blocking of the stream by a landslide and the accumulation of lake sediments. The site of the landslide and much of the alluvial material is now submerged by the waters of Candowie Reservoir.

Significance:

Regional. This is an unusual process of valley alluvium accumulation in the study area. It illustrates the potential for large scale slope failure in the Mesozoic sediments.

Management:

Class 3. Changes in land use are unlikely to reduce the significance of features of the site.
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