Tag: geography

The mantle is the mostly-solid bulk of Earth's interior. The mantle lies between Earth's dense, super-heated core and its thin outer layer, the crust. The mantle is about 2,900 kilometers (1,802 miles) thick and makes up a whopping 84% of Earth's total volume.

Earth's inner core is the innermost geologic layer of the Earth. It is primarily a solid ball with a radius of about 1,220 kilometres (760 miles), which is about 20% of the Earth's radius or 70% of the Moon's radius.

Global observations show that the crustal thickness varies through the tectonic regions. While the continental crust is 30–70 km thick, the oceanic crustal thickness is 6–12 km. 

Oxygen is by far the most abundant element in the earth's crust. Scientists estimate oxygen comprises nearly half of the mass of the crust. It also accounts for 21 percent of Earth's atmosphere

Perth was founded by Captain James Stirling in 1829 as the administrative centre of the Swan River Colony. ... As part of Perth's role as the capital of Western Australia, the state's Parliament and Supreme Court are located within the city, as is Government House, the residence of the Governor of Western Australia.

The Great Barrier Reef is the world's largest coral reef system composed of over 2,900 individual reefs and 900 islands stretching for over 2,300 kilometres (1,400 mi) over an area of approximately 344,400 square kilometres (133,000 sq mi). The reef is located in the Coral Sea, off the coast of Queensland, Australia.

Sheep stations and sheep husbandry began in Australia when the British started raising sheep in 1788 at Sydney Cove. In Australia, the owner of a sheep station can be called a pastoralist, grazier; or formerly, a squatter, as in "Waltzing Matilda".

Isolated.