Banded iron formations: Oceans, algae and iron oxide
Most of the world's iron ore is found in rocks called banded iron formations or BIFs. BIFs occur on all continents, and in ...
Natural History Museum%2c London3y
The heavy metal rock bands charting life on early Earth
At 2.5 billion years old and weighing in at 2.5 tonnes, the banded iron formation is so heavy that Museum engineers had to reinforce the floor underneath it in Hintze Hall. 'The rock tells a ...
Nature26d
Banded Iron Formations And Their Geochemical Processes
Banded Iron Formations (BIFs) are sedimentary rocks that are characterized by alternating layers of iron-rich minerals and silica. They are significant in understanding the Earth's early ...
PBS7y
Deep Time
2,500 mya: Banded iron formations Banded iron formations (BIFs) are sedimentary rocks deposited extensively on the ocean floor over hundreds of millions of years. Their alternating rust- and gray ...
Forbes9mon
Researchers Find Oldest Evidence Of Earth’s Magnetic Field
The researchers found that rocks dating from 3.7 billion years ... An example of the 3.7 billion year old banded iron formation found in the north-eastern part of the ...
EurekAlert!10mon
Banded iron formation (IMAGE)
An example of the 3.7 billion year old banded iron formation that is found in the northeastern part of the Isua Supracrustal Belt. Credit: Claire Nichols. The image can be used for editorial ...