Suggest wishlist books for a rock club's library

We have a very small library of books that belong to our recently formed rock club. Care to make a suggestion for our wishlist?

John McPhee wrote a lot about geology, as in Annals of the Former World

Derek Ager's The Nature of the Stratigraphical Record is very good. It's intended for a specialized audience, but nonetheless very accessible and not very long. I am considering using it as an introductory geology textbook. As suggested by deniro, Annals of the Former World is good too.

The Map That Changed the World

Look at the geology tag page.

Great reviews. Added to wishlist. Sounds like many members could enjoy it. Thanks for the suggestion.
(Annals of the Former World)

The Nature of the Stratigraphical Record may indeed be too specialized for our group. However, we meet in the university geology lab and the professor is a member. He might find it to be a useful title. I will pass the information along. Our group is pretty diverse.

We do have The Map That Changed the World and it is a great read. I have and will continue to use the geology tag page. Sometimes there are so many books it can be overwhelming. It is great to have a personal recommendation. Thanks.

For diverse interests, my dog-eared short list includes After the Ice Age by E.C. Pielou and Rocks from Space by O Richard Norton. A bit thicker is Islands in the Cosmos by Dale A. Russell. I have reviews of them on librarything. May you find it in you to acquire copies and enjoy.

Edited to add: Rocks From Space, 2nd ed

I see you're located in Michigan.... you might find the Michigan Geological Survey's publications list interesting (downloadable PDFs):
http://www.michigan.gov/documents/deq/GIMDL-Catalog-2010-01-20_307979_7.pdf

It's a bit of a slog to look through the list, but there are at least a few relevant looking publications.
Examples:
"Rocks and Minerals of Michigan" - http://www.michigan.gov/documents/deq/GIMDL-GGRMMI_302370_7.pdf
"Collecting Rocks, Minerals, and Fossils in Michigan" - http://www.michigan.gov/documents/deq/PA06_304668_7.pdf

There is also a fascinating looking series of open-file reports that are essentially reprints of some field notebooks from the late 1800s/early 1900s. An example:
http://www.michigan.gov/documents/deq/OFR_27_Leverett_NB176_306377_7.pdf

Some of these publications are old (some are really old), but in geologic time they're pretty new, and still ought to be informative. Best of all, as PDFs, they're free.

Also, you might find basic geology textbooks worthwhile (Dana's Manual of Mineralogy, for instance). You mention that you meet in a university geology lab with a professor, so probably already familiar with these and I'm only bringing them up just in case.

Thanks for all the GREAT suggestions!

Considering where you live, I would add Karen Brzys's other book, Agates Inside Out by Karen A. Brzys, with photographs by Thomas P. Shearer. Beautiful images & much on Lake Superior agates.

Unfortunately, The Nature of the Stratigraphical Record seems to be out of print. Any suggestions for an alternative?

THIS JUST OUT!

'CASCADIA'S FAULT; The Coming Earthquake and Tsunami That Could Devastate North America' by Jerry Thompson brings to mind the possibility that if and when the Yellowstone National Park super-volcano blows, it could trigger the 'Big One' along the San Andreas Fault as well as the Cascadia Subduction Zone, off the coast of Washington and Oregon, to provide a triple-whammy that reduce the western U.S.A. to a wasteland. This would make the flooding of New Orleans look like small potatoes. And remember, there are still volcanoes-Mt. Rainier for one- that are not extinct yet! Be warned, People! Go East, Young Man!