Quantcast
Last updated on April 24, 2014 at 16:36 EDT

Latest Banded iron formation Stories

2012-08-16 02:21:10

VANCOUVER, British Columbia, Aug. 16, 2012 /PRNewswire/ -- Silver Bull Resources, Inc. (TSX: SVB, NYSE MKT: SVBL) ("Silver Bull") is pleased to announce the renewal of its 2,000 square kilometer Mitzic license by the Ministry of Mines in Gabon for an additional 3 years. Silver Bull is also pleased to provide the results of the work program on the Mitzic license completed over the last 2 years. (Logo: http://photos.prnewswire.com/prnh/20120803/LA51676LOGO) The Mitzic license lies...

Image 1 - Evidence For Iron-Rich Ancient Ocean Changes View Of Earth's Early History
2011-09-08 06:26:25

  Discovery challenges previous models for environment in which early life evolved Over the last half-billion years, the ocean mostly has been full of oxygen and teeming with animal life. But earlier, before animals evolved, oxygen was harder to come by. Now a new study, led by researchers at the University of California, Riverside (UCR), reveals that the ancient deep ocean was not only devoid of oxygen but also rich in iron, a key biological nutrient for nearly a billion years...

adeaf951f6bbe6549c353fecd738eb88
2009-10-12 07:45:00

The strikingly banded rocks scattered across the upper Midwest and elsewhere throughout the world are actually ambassadors from the past, offering clues to the environment of the early Earth more than 2 billion years ago. Called banded iron formations or BIFs, these ancient rocks formed between 3.8 and 1.7 billion years ago at what was then the bottom of the ocean. The stripes represent alternating layers of silica-rich chert and iron-rich minerals like hematite and magnetite. First mined as...

b837b6eda290f2727002a1677d6e32d6
2009-04-08 15:11:47

The Earth's original atmosphere held very little oxygen. This began to change around 2.4 billion years ago when oxygen levels increased dramatically during what scientists call the "Great Oxidation Event." The cause of this event has puzzled scientists, but researchers writing in Nature have found indications in ancient sedimentary rocks that it may have been linked to a drop in the level of dissolved nickel in seawater. "The Great Oxidation Event is what irreversibly changed surface...