Islands of Gold in an Ocean of Land - The Macquarie Arc

The Macquarie Arc is an ancient Australian volcanic island arc that formed in the southern Pacific Ocean 450 million years ago. The volcanic rocks that formed the islands are now part of the eastern Australia mainland - and are rich in porphyry style gold and copper deposits. Earth scientists explain how they unravelled the complex story of the arc using clues from the rock's geochemistry, and from fossils that lived in coral reefs around the islands. Plate tectonics created the island arc but finally destroyed it by pushing the volcanic rocks, and mineral deposits, onto the eastern Australian seaboard.

Видео Islands of Gold in an Ocean of Land - The Macquarie Arc канала Geology Films