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8422-3 Tambo River Cliffs

This information has been developed from the publications:

    • Sites of Geological and Geomorphological Significance in Central Gippsland (1981) by Neville Rosengren, M.S McRae-Williams and S.M Kraemers.
    • Sites of Geological and Geomorphological Significance in the Gippsland Lakes Catchment (1984) by Neville Rosengren.
    • Sites of Geological and Geomorphological Significance in East Gippsland, Victoria (1981) by Neville Rosengren, M.S McRae-Williams
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 for details of geological heritage reports, and a bibliography.


Location:
738163. 4 kilometres north of Swan Reach.

Image: East Gippsland Sites of Significance
Bairnsdale Limestone overlying Wuk Wuk Marl (obscured) in Tambo River cliff, Bumberrah.

Abstract:
River cliffs, outcrops of Bairnsdale Limestone.

Access:
Tambo Upper Road.

Ownership:
Crown land, private land.

Geology:
The Bairnsdale Limestone Member of the Gippsland Limestone is exposed as cliffs along the Tambo River between Sean Reach and Tambo Upper. The section consists of thin, fine-grained partly ferruginous limestones alternating with softer marl beds. Large, well preserved fossils (echinoids and bivalves) are common. The lowest part of the outcrop, a grey shelly calcareous silt, is the uppermost section of the Wuk Wuk Marl.

Geomorphology:
The distinctive feature of the Bairnsdale Limestone is the degree of cementation of the coarser limestone beds. Where undercut by rivers, these beds maintain high cliffs and account for the narrow and gorge-like appearance of the river between Tambo Upper and Swan Reach.

Significance:
Regional. This is an extensive outcrop of the Bairnsdale Limestone.

Management:
The abundant macrofossil fauna allows for easy collection without the risk of serious deterioration of the site.

Image: East Gippsland Sites of Significance
Large echinoids (Clypeaster), in Bairnsdale Limestone, Bumberrah.
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