Image: Nuvvuagittuq belt rocks
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Description: An outcrop of metamorphosed volcanosedimentary rocks from the Porpoise Cove locality, Nuvvuagittuq supracrustal belt, Canada. Some of these rocks have Sm/Nd ages in excess of 4.0 Ga and may be the oldest rocks on Earth.
Title: Nuvvuagittuq belt rocks
Credit: http://astrobiology.nasa.gov/nai/library-of-resources/annual-reports/2008/cub/projects/sulfur-biogeochemistry-of-the-early-earth/
Author: NASA
Usage Terms: Public domain
License: Public domain
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