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The Oceania continent is located at the intersection of four plates, the mainland belongs to the Indo-Australian Plate, to the south is the Antarctica Plate, to the North is the Eurasian Plate, and to the East is the Pacific Plate.
By looking at the modern Oceania tectonic framework, the strata of mainland gradually become younger from Western Australia to east, the center is the Western Australia Archean craton, to the east is the Australia Archean-Proterozoic craton, Eastern Australia Phanerozoic orogenic belt, New Zealand Paleozoic-Mezoic orogenic belt respectively, to the north is the Papua New Guinea Cenozoic orogenic belt, and the peripheral is the Southwest Pacific Cenozoic volcanic arc.
The basement of the Australia Archean-Proterozoic craton is Archean to Proterozoic crystalline basement, overlied by Phanerozoic cover, Eastern Australia Phanerozoic orogenic belt is the Phanerozoic Tasman orogenic belt, New Zealand and Papua New Guinea are both the Cenozoic active continental margin that have small amount of Paleozoic basement, strong magmatic activities, the south Pacific nations at the peripheral is the Cenozoic volcanic arc.
Even though the land area ranked the last of the seven continents, the Oceania has abundant mineral resources, such as nickel, bauxite, gold, chromium, phosphate, iron, silver, lead, coal, oil, gas, uranium, titanium, copper, rare earth and manganese etc, especially the nickel, bauxite, gold, iron,uranium, copper, rare earth and manganese all occupied the important position in the world, reserves and output both leap in to the front ranks of the world, with the development of exploration technology, the mineral resources at the marine are also discovered, especially the breakthrough exploration of modern seafloor massive sulfide ore deposits.