Rock Outcrop of Mauritian Trachyte (IMAGE)

University of the Witwatersrand

Rock Outcrop of Mauritian Trachyte

Caption

This is lead author Prof. Lewis D. Ashwal studying an outcropping of trachyte rocks in Mauritius. Such samples are about 6 million years old, but surprisingly contain zircon grains as old as 3000 million years.

Credit

Susan Webb/Wits University

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