Storm on the Rock
This is a photograph of Uluru, in the Northern Territory of Australia, on a hot and humid summer afternoon. As lightning flashed about, torrential rains swept across the landscape and silver rivulets of water began to rush down the sides of the mountain. Uluru is made of red-coloured Proterozoic arkosic sandstones. However, on rare days such as this, the storm clouds and moisture in the atmosphere filter out much of the red end of the light spectrum and make the rock appear purple.
Featured on GeoLog, the official blog of the European Geosciences Union (opens in a new window)
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Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0) (opens in a new window)Credit: John Clemens (distributed via imaggeo.egu.eu)
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