Geology is the study of the solid earth--its chemical properties, its structure, its morphology, its history, and its uses. The properties of earth's material makeup and the ways in which physical properties work on the earth are the two major divisions in the field. This guide introduces some of the library resources important in the field of geology.
This guide is a starting point; don't hesitate to ask a librarian for further assistance.
Rock with Erosion Holes in it - http://www.flickr.com/photos/martinlabar/90632001/
Translucent Wonder: Agate - http://www.flickr.com/photos/cobalt/2180258598/