I rated this 4 stars because it was so informative. I learned more in the first 7 chapters (the rest are all about different volcanoes, which I just browsed and dreamed about visiting) than an entire lifetime of trying to learn about volcanoes. The only complaint that I have with this book is the writing style is incredibly difficult to follow if you're tired or distracted due to excessive wordiness. They'll have a lot of, which these sentences aren't always bad, but they are often to the detriment of reading comprehension, these type of sentences. And the king of run-on sentences. For example, this sentence got me:
"Calderas are large circular depressions produced by phenomena of subsidence connected to the collapse of the roof of a magma chamber."
Instead of trying to sound like Double D from Ed, Edd and Eddie, why not just say the roof of a magma chamber caves in and the resulting cavern above is called a caldera? Granted, don't get me wrong. I love words, and I love intelligent sounding sentences but come on. :'D I also like to comprehend what I'm reading without having to break down each word.
But run-on sentences aside, (don't get me wrong, I'm just getting used to reading book by people smarter than me!) I recommend this book for all your volcano needs. For myself, I grabbed a pen and paper and took notes, and when I was able to break it down like that, it helped comprehend. It covers everything from magma to the chemical composition to the different types of volcanoes to, well, everything! Did I enjoy it? Yes I did. Do I recommend it? Yes, I absolutely do because in all my years of reading, I have never run across a book more informative for volcanoes than this one. Just...read slowly. ;)