Plates Boundaries. At the locations where two tectonic plates interact, a boundary between these plates exist. There are three types of boundaries that geologist observe. These boundaries are divergent boundaries, convergent boundaries, and transform boundaries.
Great Sandy Desert (Western Australia): 284,993 km2 (110,036 square miles). Tanami Desert (Western Australia and Northern Territory): 184,500 km2 (71,235 square miles). Each of these deserts is either in or primarily in Western Australia, in the western third of the continent.
The Simpson Desert is a huge desert in the central east of Australia, and covers parts of Queensland, South Australia and New South Wales. Its boundaries are the Finke River and Mabel Range to the west, the Adam Range to the north ,the Georgina and Diamantina Rivers to the east and Lake Eyre to the south.he Sonoran desert is one of the largest and hottest deserts in the Americas and it covers the southeast of California and the southwest of Arizona in the US, and the northhwest Mexican states of Sonora, Baja California, and Baja California Sur. To the north of this 'low desert' is the 'high desert' Mojave.