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Study: Dust from Sahara Helped Form Bahama Islands

What does the Sahara Desert have in common with a Caribbean island? Quite a lot, say researchers from the University of Miami. Their study shows that the iron-rich dust from the vast African desert, carried 8,000 kilometers through the atmosphere across the Atlantic, nourished the specialized bacteria that produced the calcium carbonate to build up the Bahama islands over the last 100 million years. Led by marine geologist Peter Swart, the scientists found high concentrations of two...

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