Sb5 Jacksons Creek - Slope Forms

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.

Location Access Ownership	Sunbury - 000450. Shire of Bulla. Jacksons Creek valley 7 km north of Sunbury railway station. Racecourse Road. Private land
Site Description	Erosion by Jacksons Creek and its tributaries has stripped the Newer Volcanics lava flows to expose underlying Silurian rocks in a series of narrow ridge crests and valleys trending northerly to north-north-westerly following the strike of these sediments. Jacksons Creek has wide, terraced alluvial valley floor but the channel is sinuous and narrow.
Significance	Regional. The site presents some major topography contrasts contained in a single valley system. The rock and regolith materials and the slope forms on opposite sides of the valley are very different although similar processes are operating. The channel pattern of Jacksons Creek is developed on alluvium and its sinuous pattern contrasts markedly with the broad open meanders of Emu Creek to the east.
Management	Class 2. The significant topographic and geologic features of the site are well displayed under the present rural land use system. To maintain this in a residential subdivision situation will be more difficult. It would be necessary to limit buildings to the lower slopes of the Silurian rocks west of Jacksons Creek and to permit only relatively large eg - 5 ha holdings on the area of the site.

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