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Contact: Kea Giles
Geological Society of America

September GSA Today Cover Image

Caption: Iron-rich silcrete mantles beveled quartzite in south-central South Africa. Deep valleys dissect the landscape and steep hillslopes separate the valley bottoms from the flat, gently sloping pediments.

Credit: Paul Bierman and GSA Today.

Usage Restrictions: Credit Paul Bierman and GSA Today.

Related news release: Aging Africa

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