Today, these 2.45-billion-year-old sedimentary rock deposits are called banded iron formations. They represent a unique archive of the interactions between Earth’s continents, oceans and ...

Today, these 2.45-billion-year-old sedimentary rock deposits are called ... And, of course, banded iron formations are what we mine for iron ore. These sedimentary deposits have distinctive, rhythmic ...

Huge iron ore deposits in Western Australia's Hamersley Province formed when major tectonic events led to the breakup of supercontinent Columbia and to the amalgamation of Australia.

Iron, the most common element on earth (by mass), constitutes nearly 5% of the earth’s crust. Iron ore is a type of rock from which metallic iron can be economically extracted. Hematite and Magnetite ...

Banded iron formations (BIFs) are striking, red-hued sedimentary rocks that contain alternating layers of iron and chert. They are relics of Earth’s early history, thought to have formed when ...

In short: Iron ore in Australia's high quality deposits in the Pilbara formed 1.4 to 1.1 billion years ago, according to new study. Researchers used radiometric dating to determine the age of ...

The world’s largest iron ore deposits formed during the breakup of the ancient supercontinent Columbia. Credit: James St. John / Flickr / CC BY 2.0 A new study shows that the world’s largest iron ore ...

To pinpoint the age of the deposits, Courtney-Davies and his colleagues dated minerals in eight banded iron formations — giant blocks of sedimentary rock that feature alternating layers of iron ...