1562656
9780823964659
Did you know that the most common rocks on Earth's surface are sedimentary rocks? Over millions of years, layers of sand, rock, mud, and shells build up to form sedimentary rocks. Layers of sediment have been building up in the Grand Canyon for 2 billion years! Readers will learn all about sedimentary rocks in this intriguing book.Cefrey, Holly is the author of 'Sedimentary Rocks', published 2003 under ISBN 9780823964659 and ISBN 0823964655.
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