Study: Water in fault lines leaves gold in its place

03/18/2013 | Our Amazing Planet

Scientists have discovered that water in the Earth's faults is rich in carbon dioxide, silica and elements such as gold, which gets left behind when the water evaporates during an earthquake. The study, published in the journal Nature Geoscience, found that the amount of gold left behind from one earthquake is minute, but an active fault line -- like New Zealand's Alpine Fault -- is capable of building a sizable mineral deposit in just 100,000 years.

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