Rock from meteorite impact crater. This rock is a fragment of a shatter cone, a rare rock type that is only found in the bedrock beneath large meteorite impact craters. Shatter cones are conical in shape, with thin grooves (striae) that radiate from the tip (apex) of the cone. The cones' tips point towards the site of impact, with the striae radiating away from it. They can range from 2.5 centimetres to several meters in length. This sample is from the Nordlinger Ries impact crater in Germany, which is believed to have formed about 14.3 to 14.5 million years ago in the Miocene Epoch.
Science Photo Library was founded in 1981 by Michael Marten, one of the authors of "Worlds Within Worlds", a book exploring different ways to observe the universe - from electron micrographs, to images of earthrise taken from the Apollo spacecraft. When Marten started receiving requests for the beautiful images in the book, he had an idea of setting up Science Photo Library.
Since then, Science Photo Library has continued to work alongside world acclaimed photographers and the leading science and medical experts to provide a central source of the best science and specialist imagery available. Although the collection started with scientific images, it has grown to encompass all aspects of science and their impact on everyday life.
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