The Pebble in My Pocket

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Where do pebbles come from? How were they made? Tracking the story of a pebble from its origins in a fiery volcano 480 million years ago to its place in a modern landscape, science writer Meredith Hooper follows the processes of rock-formation and erosion that create new pebbles all over the world. The story begins wiht a lava flow from an erupting volcano and follows the impact of water, wind and sun, and the downward pull of gravity. Includes a chart of geological time periods and a timeline from the beginnings of the earth to the present day. The New Scientist says of this book "Not one word has been left to chance...encourages a thoughtful comtemplation of the mysteries of the universe".