Ngunnawal, Australian Capital Territory

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Ngunnawal Canberra, Australian Capital Territory
Population:	8,449 (2001 census)
Established:	1993
Postcode:	2913
Property Value:	AUD $285,000 (2005)[1]
District:	Gungahlin
Suburbs around Ngunnawal Nicholls Ngunnawal Gungahlin Palmerston

Ngunnawal is a suburb in the Canberra, Australia district of Gungahlin. The postcode is 2913. The suburb is named after the Ngunnawal people, the original Aboriginal tribe who inhabited the area. It was gazetted on October 18, 1991. Streets are named after Aboriginal people and Aboriginal words.

It is next to the suburbs of Nicholls, Gungahlin and Amaroo. It is bounded by Gungahlin Drive, Gundaroo Drive and Mirrabei Drive. Ginninderra Creek runs through the suburb. There is a hill reserve through the suburb also, and the houses nearby are built on this hilly area. Gold Creek Historic Homestead is also located in the suburb.

[edit] Geology

Ngunnawal is covered by the Canberra Formation from the late middle Silurian age. The area was studied in more detail than many other parts of Canberra by J P Ceplecha from the ANU in 1971.

Most of Ngunnawal is based on slaty shale and mudstone. In the North West corner is found dacite and quartz andesite. A layer of tuff is formed into a Vee shaped surface exposure in the western half of the suburb. A smaller N shaped outcrop of tuff is found in the east corner. A crook shaped outcrop of ashstone is exposed just to the east of the Vee.

The structure of the rock has been determined by folding. The folds are aligned north-north east and plunge to the south south west. An anticline determines the point of the Vee pointing south south west. Another anticline determines the end of the crook shape. A syncline determines the top of the crook. The Deakin Fault runs roughly parallel to the fold axes on the south east side along Ginninderra Creek.

See also: Geology of the Australian Capital Territory