Nobbys Tuff
Stratigraphic range: Wuchiapingian

Nobbys Head, Newcastle

Type| Geological formation
Thickness| up to 25 metres (80 ft)
Location
Region| Lachlan Orogen
Country| Australia
Type section
Named for| Nobbys Head

Nobbys Tuff is a geologic formation in eastern Australia. Found in Newcastle within the Lachlan Orogen, this stratum is up to 25 metres thick. Formed from volcanic ash in an eruption in the Wuchiapingian age, in the late Permian around 255.02 Ma. This formation includes tuff, tuffaceous sandstone, tuffaceous siltstone, claystone, and chert. Often noticed at Nobbys Head in Newcastle.[1][2]

Nobbys volcanic past information sign, December 2025

## See also

* Newcastle Coal Measures
* Lachlan Orogen

## References

1. ↑ "Geology of the Newcastle coastline, New South Wales". Resources and Geo Science Australia. New South Wales Government. https://resourcesandgeoscience.nsw.gov.au/__data/assets/pdf_file/0005/539204/Geology-Newcastle-Coastline.pdf.
2. ↑ "Nobbys Tuff". Geo Science Australia - Australian Stratigraphic Units Database. Australian Government. https://asud.ga.gov.au/search-stratigraphic-units/results/14198.

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