Sedimentary rocks are like time capsules. Each layer contains clues about what life was like at the time the layers were formed. Readers will uncover the fascinating science behind rock formation through text that's both informative and engaging. Helpful diagrams and charts reinforce the concepts covered in the text, while allowing readers to visualize concepts they encounter in STEM learning. A glossary, index, and reference websites encourage readers to seek out additional information on their own, using the detective skills learned in this book to explore the world around them.