Australian Capital Territory

The Australian Capital Territory (formerly, "The Territory for the Seat of Government" and, later, the "Federal Capital Territory") is the federal district in the south east of Australia, enclaved within New South Wales. Its only city is Canberra, the capital city of Australia.

Geographically, the territory is bounded by the Goulburn-Cooma railway line in the east, the watershed of Naas Creek in the south, the watershed of the Cotter River in the west, and the watershed of the Molonglo River in the north-east. The ACT also has a small strip of territory around the southern end of the Beecroft Peninsula, which is the northern headland of Jervis Bay.

The need for a national territory was flagged by colonial delegates during the Federation conventions of the late 19th century. Section 125 of the Australian Constitution provided that, following Federation in 1901, land would be ceded freely to the new Federal Government. The territory was transferred to the Commonwealth by the state of New South Wales in 1911, two years prior to the naming of Canberra as the national capital in 1913. The floral emblem of the ACT is the royal bluebell and the bird emblem is the gang-gang cockatoo.

The economic activity of the Australian Capital Territory is heavily concentrated around Canberra. A stable housing market, steady employment and rapid population growth in the 21st century have led to economic prosperity and in 2011 CommSec ranked the ACT as the second best performing economic region in the country. This trend continued into 2016, when the territory was ranked the third best performing out of all of Australia's states and territories. There is a higher proportion of young adults in the region compared with other Australian states or territories. Approximately one-fifth of ACT residents were born outside of Australia, mainly in the United Kingdom. Almost one-fifth speak a language other than English at home, the most common being Chinese.

Geography

The ACT is bounded by the Goulburn-Cooma railway line in the east, the watershed of Naas Creek in the south, the watershed of the Cotter River in the west, and the watershed of the Molonglo River in the north-east. The ACT also has a small strip of territory around the southern end of the Beecroft Peninsula, which is the northern headland of Jervis Bay.

Apart from the city of Canberra, the Australian Capital Territory also contains agricultural land (sheep, dairy cattle, vineyards and small amounts of crops) and a large area of national park (Namadgi National Park), much of it mountainous and forested. Small townships and communities located within the ACT include Williamsdale, Naas, Uriarra, Tharwa and Hall.

Tidbinbilla is a locality to the south-west of Canberra that features the Tidbinbilla Nature Reserve and the Canberra Deep Space Communication Complex, operated by the United States' National Aeronautics and Space Administration (NASA) as part of its Deep Space Network.

There are a large range of mountains, rivers and creeks in the Namadgi National Park. These include the Naas and Murrumbidgee Rivers.

Geology

Notable geological formations in the Australian Capital Territory include the Canberra Formation, the Pittman Formation, Black Mountain Sandstone and State Circle Shale.

In the 1840s fossils of brachiopods and trilobites from the Silurian period were discovered at Woolshed Creek near Duntroon. At the time, these were the oldest fossils discovered in Australia, though this record has now been far surpassed. Other specific geological places of interest include the State Circle cutting and the Deakin anticline.

The oldest rocks in the ACT date from the Ordovician around 480 million years ago. During this period the region along with most of Eastern Australia was part of the ocean floor; formations from this period include the Black Mountain Sandstone formation and the Pittman Formation consisting largely of quartz-rich sandstone, siltstone and shale. These formations became exposed when the ocean floor was raised by a major volcanic activity in the Devonian forming much of the east coast of Australia.