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A lyrical, ...
A lyrical, nontechnical geologic history--from continental drift to evolution.
Posted April 28, 2008
Written in Stone by Chet and Maureen E. Raymo, was a great book .The book first explained how the super continent Pangea was formed. Alfred Wegener came up with the theory of Pangea. He believed the continents were once a super continent. I also learned the word Pangea means ¿all-earth¿. The book explained Wegeners reasoning for the super continent very well. They explained that Wegener saw that the two sides of the ocean matched like the pieces in a jigsaw puzzle. The authors also added great pictures to go along with the topic of Pangea. Looking at the pictures gave me a better understanding that they could¿ve fit together at one time. Another major topic in the book was sea-floor spreading. Harry Hess came up with the theory that came from a variation on continental drift. They talked about Hess¿ theory about how he thought the oceanic crust is continuously extruded at the mid-ocean ridges, oozed up from Earth¿s hot interior. As new crust is created, the ocean floor is pushed away from the ridges. They also gave a great before and after picture on this topic. I really liked how at major topics like these two, they gave you great detailed pictures that showed you what they were talking about if you didn¿t quite understand it in their words. The next well detailed topic was rocks. The three different types of rocks are Igneous, Sedimentary and Metamorphic. I like how they noted there¿s two different types of Igneous Rocks: Intrusive and Extrusive. I learned that Intrusive rocks cool and solidify slowly within the body of the Earth. Also, Extrusive rocks are only on the surface of the Earth, where heat is quickly dissipated. I didn¿t know that Sedimentary rocks are often associated with the long weathering and erosion that tear mountains down. Finally, Metamorphic rocks are formed by any kind of rock altered by high temperature and pressure without remelting. They also mentioned fossils of many animals as well. The part I found most interesting in the book was when they talked about the extinctions. They explained extinctions such as the mass extinction of the dinosaurs which was caused when a huge meteorite hit earth. Another extinction they talked about was the extinction of mammals such as the woolly mammoth and the saber-toothed tiger. They became extinct when humans overhunted them. This was a well detailed book with words and pictures, and I would recommend it to anyone who likes to learn about the earth, animals, and about what happened in the past that led the earth to what it is today.Was this review helpful? Yes NoThank you for your feedback. Report this reviewThank you, this review has been flagged.